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• Chennai Metro Water [Indian Websites]

  - by samsudeen

  If you are living in Chennai definitely you will have this question in your mind “Does Chennai 0survive this summer without any water crisis?”. The Chennai Metro Water maintains a website where in you can know all the details about the water storage, supply. This site has all the information about water supply  especially matters for  Chennai residents. I have given some of the uses of this site Water Sewer Application Status If you are a new resident and applied for water sewer application status. You can check your application (Water Sewer Application Status) by entering your WA No (Water Application No). You can also download all the required application forms. Register Complaints You can register complaints (Register Complaints) about  water supply / defective water meter and sewage blocking online. Pay Water & Sewage Tax You can pay your water & sewage tax (Pay Tax) online including the dues /arrears if any left out. Lake Level This site also maintains the current (Lake Level) and historic water levels of the Chennai water reservoirs including the daily inflow /out flow of water. You can also know the daily / month rainfall levels of these water reservoirs from 1965 onwards. Hope this  information little  useful for those who are planning / building a new house in Chennai corporation. Join us on Facebook to read all our stories right inside your Facebook news feed.

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• Water Simulation in LIBGDX [on hold]

  - by Noah Huppert

  I am doing some R&D for a game and am now tackling the topic of water. The goal Make water that can flow. Aka you can have an origin point that water shoots out from or a downhill slope. Make it so water splashes, so when an object hits the water there is a splash. Aka: Actual physics water sim. The current way I know how to do it I know how to create a shader that makes an object look like its water by making waves. Combined with that you can check to see if an object is colliding and apply an upwards force to simulate buoyancy. What is wrong with that way The water does not flow No splashes Possible solutions Have particles that are fairly large that interact with each other to simulate water Possible drawbacks Performance. Question: Is there a better way to do water or is using particles as described the only way?

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• How to ‘Bounce’ Drops of Water on Top of a Pool of Water Indefinitely [Physics Video]

  - by Asian Angel

  Normally drops of water are automatically ‘absorbed’ into a larger pool of water when contact is made, but there is one way to stop those water drops from coalescing with the rest: vibration. This awesome video shows the process in action as drops of water remain on top of the pool of water and even form groups of drops! Drops on Drops on Drops Article [Physics Buzz Blog] Drops on Drops on Drops Video [YouTube] [via Neatorama] How Hackers Can Disguise Malicious Programs With Fake File Extensions Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer

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• Rendering oily/polluted water?

  - by Fraser

  Any shader wizards out there have an idea of how to achieve an oily/polluted water effect, similar to this: Ideally, the water would not be uniformly oily, but instead the oil could be generated from some source (such as a polluting drain from a chemical plant) and then diffuse throughout the water body. My thought for this part would be to keep an "oil map" as a 2D texture that determines the density of oil at each point on the water surface. It would diffuse and move naturally with the water vel;ocity at that point (I have a wave-particle simulation for dynamic waves, and am already doing something similar for foam on the water surface). However, I'm not sure how physically correct that would be, since oil might not move at the same velocity as the water. And I have no idea how to make all those trippy colors :-). Thoughts?

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• Do I need liquid cooling?

  - by Mrrvomun

  I'm building a computer mainly for gaming and developing games. It's going to be a three screen system with two GeForce GTX 460's and a quad-core i7. The newegg wattage calculator says I need around 900W. The case I intend to get is this one. Full specs if you need 'em are at the end of this post. I have no intentions to overclock the system at the moment, but this may change in the future. I've done a lot of research on the subject, and the answers I've found indicate that it takes a heck of a lot of power to require liquid cooling, and most non-overclocked systems don't need it. But I haven't seen a question about a system with two GPU's, so I ask you the following two questions: Assuming that the system is used for gaming for very extended periods of time (say 4-6 hours at a time, nonstop) with all three screens running at full 1080p, would the fans installed in the system suffice? Or would I need more fans and/or liquid cooling? If the system is used under the same circumstances as above, and is overclocked to a reasonable level, would the fans installed in the system suffice? Or would I need more fans and/or liquid cooling? Specs: Intel Core i7 16GB DDR3 Two nVIDIA GeForce GTX 460 3TB HDD Two DVD-RW writers Thermaltake 1050W power supply Case is linked above

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• 2D water with dynamic waves

  - by user1103457

  New Super Mario Bros has really cool 2D water that I'd like to learn how to create. Here's a video showing it. When something hits the water, it creates a wave. There are also constant "background" waves. You can get a good look at the constant waves just after 00:50 when the camera isn't moving. I assume the splashes in NSMB work as in the first part of this tutorial. But in NSMB the water also has constant waves on the surface, and the splashes look very different. Another difference is that in the tutorial, if you create a splash, it first creates a deep "hole" in the water at the origin of the splash. In new super mario bros this hole is absent or much smaller. I am referring to the splashes that the player creates when jumping in and out of the water. How do they create the constant waves and the splashes? I am especially interested in the splashes, and how they work together with the constant waves. I am programming in XNA. I've tried this myself, but couldn't really get it all to work well together. Bonus questions: How do they create the light spots just under the surface of the waves and how do they texture the deeper parts of the water? This is the first time I try to create water like this. EDIT: I assume the constant waves are created using a sine function. The splashes are probably created in a way like in the tutorial. (But they are not the same, so I am still interested in how to make this kind of splashes) But I have a lot of trouble combining those things. I know I can use the sine function to set the height of a specific watercolumn but the splashes are using the speed, to determine the new height. I can't figure out how to combine those. Not that I am not asking how the developers of new super mario bros did this exactly. I am just interested in ways to recreate an effect like it. This week I have an examweek so I don't have time to work on the code. After this week I will spend a lot of time on it. But I am constantly thinking about it, so that's why I will be checking comments etc. I just won't be looking at the code since it might be too time-consuming.

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• AMD FX8350 CPU - CoolerMaster Silencio 650 Case - New Water Cooling System

  - by fat_mike

  Lately after a use of 6 months of my AMD FX8350 CPU I'm experiencing high temperatures and loud noise coming from the CPU fan(I set that in order to keep it cooler). I decided to replace the stock fan with a water cooling system in order to keep my CPU quite and cool and add one or two more case fans too. Here is my case's airflow diagram: http://www.coolermaster.com/microsite/silencio_650/Airflow.html My configuration now is: 2x120mm intake front(stock with case) 1x120mm exhaust rear(stock with case) 1 CPU stock I'm planning to buy Corsair Hydro Series H100i(www.corsair.com/en-us/hydro-series-h100i-extreme-performance-liquid-cpu-cooler) and place the radiator in the front of my case(intake) and add an 120mm bottom intake and/or an 140mm top exhaust fan. My CPU lies near the top of the MO. Is it a good practice to have a water-cooling system that takes air in? As you can see here the front of the case is made of aluminum. Can the fresh air go in? Does it even fit? If not, is it wiser to get Corsair Hydro Series H80i (www.corsair.com/en-us/hydro-series-h80i-high-performance-liquid-cpu-cooler) and place the radiator on top of my case(exhaust) and keep the front 2x120mm stock and add one more as intake on bottom. If you have any other idea let me know. Thank you. EDIT: The CPU fan running ~3000rpm and temp is around 40~43C on idle and save energy. When temp is going over 55C when running multiple programs and servers on localhost(tomcat, wamp) rpm is around 5500 and loud! I'm running Win8.1 CPU not overclocked PS: Due to my reputation i couldn't post the links that was necessary. I will edit ASAP.

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• Rendering of 2d water

  - by luke

  Suppose you have a nice way to move your 2D particles in order to simulate a fluid (like water). Any ideas on how to render it? Consider the fact that the game is a 2D game. The perspective is like this (the first image i have found): an example of 2d water. The water will be contained in boxes that can be broken in order to let it fall down and interact with other objects. The most simple way that comes to my mind is to use a small image for each particle. I am interested in hearing more ways of rendering water. Thank you.

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• Why datacenter water cooling is not widespread?

  - by MainMa

  From what I read and hear about datacenters, there are not too many server rooms which use water cooling, and none of the largerst datacenters use water cooling (correct me if I'm wrong). Also, it's relatively easy to buy an ordinary PC components using water cooling, while water cooled rack servers are nearly nonexistent. On the other hand, using water can possibly (IMO): Reduce the power consumption of large datacenters, especially if it is possible to create direct cooled facilities (i.e. the facility is located near a river or the sea). Reduce noise, making it less painful for humans to work in datacenters. Reduce space needed for the servers: On server level, I imagine that in both rack and blade servers, it's easier to pass the water cooling tubes than to waste space to allow the air to pass inside, On datacenter level, if it's still required to keep the alleys between servers for maintenance access to servers, the empty space under the floor and at the ceiling level used for the air can be removed. So why water cooling systems are not widespread, neither on datacenter level, nor on rack/blade servers level? Is it because: The water cooling is hardly redundant on server level? The direct cost of water cooled facility is too high compared to an ordinary datacenter? It is difficult to maintain such system (regularly cleaning the water cooling system which uses water from a river is of course much more complicated and expensive than just vacuum cleaning the fans)?

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• Thermal risks to other components when watercooling CPU

  - by B Sharp

  I recently ordered all the components for a new desktop system to replace my old, dying computer. I wanted to have a really quiet desktop, so I got a case rated for being quiet and opted to try a closed-system CPU water cooling kit (Antec Kuhler H2O 620) that was on sale for a very good price over the Thanksgiving weekend. Most of my components are still in transit, but I became somewhat worried when a friend mentioned that abandoning air cooling units can result in heat buildup inside the case due to heat generated by the video card and other components such as RAM, the northbridge, MOSFETs and voltage regulators radiating heat that the CPU fan would normally at least keep circulating around so it doesn't build up in localized areas. Is this a realistic problem? What other precautions should I take to remove heat from other components? Adding more case fans seems like it would get really noisy. Are there quiet alternatives?

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• How to create water like in new super mario bros?

  - by user1103457

  I assume the water in New super mario bros works the same as in the first part of this tutorial: http://gamedev.tutsplus.com/tutorials/implementation/make-a-splash-with-2d-water-effects/ But in new super mario bros the water also has constant waves on the surface, and the splashes look very different. What's also a difference is that in the tutorial, if you create a splash, it first creates a deep "hole" in the water at the origin of the splash. In new super mario bros this hole is absent or much smaller. When I refer to the splashes in new super mario bros I am referring to the splashes that the player creates when jumping in and out of the water. For reference you could use this video: http://www.ign.com/videos/2012/11/17/new-super-mario-bros-u-3-star-coin-walkthrough-sparkling-waters-1-waterspout-beach just after 00:50, when the camera isn't moving you can get a good look at the water and the constant waves. there are also some good examples of the splashes during that time. How do they create the constant waves and the splashes? I am programming in XNA. (I have tried this myself but couldn't really get it all to work well together) (and as bonus questions: how do they create the light spots just under the surface of the waves, and how do they texture the deeper parts of the water? This is the first time I try to create water like this.)

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• Looking for a comfortable Laptop Cooling Pad? Repurpose a pillow as a Laptop Cooling Pad

  - by Gopinath

  Update: This idea sucks as using a pillow blocks laptop cooling fans and air flow, which in turn would damage the laptop. Thanks Vijay I’ve a HP Pavilion laptop which turns hot quickly and most of the time I would not be able to keep it on my lap after 30 minutes of usage. It’s the same case with my DELL laptop and not to blame any specific brand or model. Most of the budget laptops generate lot of heat and tough to keep them on laps for a long time. They burn skin and the irritation sense leaves me with no option other than throwing them away. While searching for options to beat the heat I found Laptop Cooling Pads on Amazon.They attach to the base of laptops and act like a heat shield/sink to protect thighs from the heat generated by laptops. They are available from around $7 and goes up to $100 depending on the features they offer. After reading reviews I selected a trendy looking and comfortable laptop cooling pad and it was around $25 before shipping and taxes. I’m going to buy one of the cooling pads from Amazon. On a second thought I started searching for options to repurpose any of the house hold items as a laptop cooling pad and save money. The option suggested by wife is to repurpose an old pillow as a laptop cooling pad.  Here is my laptop cooling pad Wow! That is a nice suggestion which saved my thighs from laptop heat as well my wallet from spending $25. Even if I’ve to buy a new pillow I would be able to pickup cheap one from Wal-Mart store for as low as $2.  Also I find it is very comfortable to use a pillow as a Laptop Cooling Pad as they are flexible and automatically adjust to the shape of my body.

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• Non-USB powered laptop cooling pad?

  - by Andrei Rinea

  On my laptop (el-cheapo but pretty good) I have all my 3 USB ports occupied by devices in use (external mouse, external keyboard, 3G internet/flash drive/external hard drive/etc). I want a cooling pad for my hard-worked laptop but all seem to be powered by USB... This laptop is mainly stationary. Either is available a solution to power the USB-powered cooling pad other than connecting it to the laptop... ... either is there a non-USB powered laptop cooling pad?

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• Power and Cooling Cost compared with Server/Hardware Cost

  - by psaccounts

  Has anyone done, or is aware of any, calculations to compare the cost of power and cooling compared to the cost of hardware (servers) in a typical data center? This is to compute a true total cost of ownership of self-hosting servers. Of course real TCO includes: hardware_cost + power + cooling + rental + human_cost + maintenance Is there any study that says something like (TCO - hardware_cost) = 40% of hardware_cost in 3 years? Any pointers will be appreciated.

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• Does water damage a fiber optic / cat5 cable

  - by chris

  One of the buildings I support recently had an adventure with a broken fire sprinkler. Lots of water everywhere. One of the "drains" the water used was the vertical risers between network closets. The cable plant in this building has bundles of cat5e as well as conduit with bundles of multimode fiber optic cables. The fiber is standard multi strand plenum rated stuff that terminates in boxes that have the patches to the switches. As far as I can tell, no water got near the ends of the cables (fiber or copper) but the conduit was saturated, and is likely still saturated because there isn't any air flow to dry the cables out. My gut reaction is that while it didn't do the cables any favors, it likely also isn't going to cause any problems. A little more reading / googling around leads me to believe that the water may cause problems down the road. Some pretty pictures so everyone knows what I'm talking about: Fiber conduit: Vertical riser, going down: Vertical riser, going up: Does anyone have any experience with this sort of damage and how to deal with it? Should we just ask the insurance adjuster to add "pull new structured cable" to the list of things to be replaced? And, if the opinion is "replace it because it'll start failing randomly over time" please include links that describe the specific failure modes, so I've got some ammo to use with the adjuster.

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• Cheap Silent Water Cooling Kit

  - by thegreyspot

  Does anyone have any recommendations for a Silent Water Cooling kit for under 100 dollars? I really don't care about the performance, I doubt it would get worse then what I have :) Also, is foam silencer effective?

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• Water cooling parts

  - by Ursa

  Want to build something similar to this.http://www.engadget.com/2010/05/12/digital-storm-tempts-with-4-4ghz-black-ops-assassin-gaming-deskt/. Does anyone know where I can find the parts? Chasis and water cooling components.

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• How can I simulate objects floating on water without a physics engine?

  - by user1075940

  In my game the water movement is done in a shader using Gerstner equations. The water movement looks realistic enough for a school project but I encounter serious problem when I wanted to do sailing on waves (similar to this). I managed to do collision with land by calculating quad's vertices and normals beneath ship, however same method can not be applied to water because XZ are displaced and Y is calculated in a shader :( How to approach this problem ? Is it possible to retrieve transformed grid from shader? Unfortunately no external physics libraries can be used.

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• How to simulate objects floating on water without a physics engine?

  - by user1075940

  In my game the water movement is done in a shader using Gerstner equations. The water movement looks realistic enough for a school project but I encounter serious problem when I wanted to do sailing on waves (similar to this). I managed to do collision with land by calculating quad's vertices and normals beneath ship, however same method can not be applied to water because XZ are displaced and Y is calculated in a shader :( How to approach this problem ? Is it possible to retrieve transformed grid from shader? Unfortunately no external physics libraries can be used.

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• Low Profile AMD Cooling

  - by J. T.

  I have a few setups where I can mount two motherboards on top of each other. They are running AMD Athlon 64 x2 dual core 4200 CPU's using a very low profile CPU cooler. These coolers are loud and annoying. Does anyone know of a low profile QUIET CPU cooling solution?

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• Low Profile AMD Cooling

  - by J. T.

  I have a few setups where I can mount two motherboards on top of each other. They are running AMD Athlon 64 x2 dual core 4200 CPU's using a very low profile CPU cooler. These coolers are loud and annoying. Does anyone know of a low profile QUIET CPU cooling solution?

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• Server Cabinet/Room Cooling

  - by user37226

  Hello all. I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in Dallas, TX so during the winter, if the heat is kept low, it is not a problem, but during the summer it easily jumps the room +10 degrees. I have decided and found a free 42U server cabinet that a hosting company was throwing away to house all of these systems in. One server is in a rack mount case while the other four servers are housed in mid-tower cases. I have purchased shelves for each computer and plan to lay the towers side ways on these shelves (as replacing the cases costs a heck of a lot of money). I like the idea of housing all of these systems in the cabinet because it will save a lot of room and clean up all of the cabling currently laying all over the office floor. When putting this setup together over the next couple of weeks, I want to address issues with dust and cooling. The server cabinet has a fan on top, front plexiglass door and a rear metal door with vent wholes on the bottom. First the cooling issues. I know I am going to want to have cool air enter the bottom of the cabinet and exit the top. I do not want the room heating up though as this will make my work area hot and then make the servers warmer as the air eventually reenters the cabinet. I had an idea to fix this problem, but am unsure if it will work. I was thinking of taking flexible piping and adapting it to the back fans of the computer having the other end of the pipe at the top close to the cabinet's top mounted fan. I was then thinking of creating a duct around the top fan into the attic. Now I am very concerned that the attic will cause issues with this type of setup because during July/August time frame, the attic is easily 120 degrees F. I could also use the flexible pipe to take it to an attic exhaust vent if it would be better to vent it into the 100 degree air outside (at least there may be wind. The other option would be to buy a small portable air conditioner. This may be a possibility, but do I want to spend the extra money on power? I bet this increases the noise. Plus they are around $250 on Amazon. What would you all recommend? Depending on the solution I end up running with above, I would also like to limit the dust that gets into the cabinet. If I were to cut a whole and mount a second cabinet fan on the bottom of the rear door, could I possibly mount a standard home air filter on the other side of that whole? Thanks in advance for your recommendations. I look forward to reading your interesting ideas.

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• Server Cabinet/Room Cooling

  - by user37226

  Hello all. I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in Dallas, TX so during the winter, if the heat is kept low, it is not a problem, but during the summer it easily jumps the room +10 degrees. I have decided and found a free 42U server cabinet that a hosting company was throwing away to house all of these systems in. One server is in a rack mount case while the other four servers are housed in mid-tower cases. I have purchased shelves for each computer and plan to lay the towers side ways on these shelves (as replacing the cases costs a heck of a lot of money). I like the idea of housing all of these systems in the cabinet because it will save a lot of room and clean up all of the cabling currently laying all over the office floor. When putting this setup together over the next couple of weeks, I want to address issues with dust and cooling. The server cabinet has a fan on top, front plexiglass door and a rear metal door with vent wholes on the bottom. First the cooling issues. I know I am going to want to have cool air enter the bottom of the cabinet and exit the top. I do not want the room heating up though as this will make my work area hot and then make the servers warmer as the air eventually reenters the cabinet. I had an idea to fix this problem, but am unsure if it will work. I was thinking of taking flexible piping and adapting it to the back fans of the computer having the other end of the pipe at the top close to the cabinet's top mounted fan. I was then thinking of creating a duct around the top fan into the attic. Now I am very concerned that the attic will cause issues with this type of setup because during July/August time frame, the attic is easily 120 degrees F. I could also use the flexible pipe to take it to an attic exhaust vent if it would be better to vent it into the 100 degree air outside (at least there may be wind. The other option would be to buy a small portable air conditioner. This may be a possibility, but do I want to spend the extra money on power? I bet this increases the noise. Plus they are around $250 on Amazon. What would you all recommend? Depending on the solution I end up running with above, I would also like to limit the dust that gets into the cabinet. If I were to cut a whole and mount a second cabinet fan on the bottom of the rear door, could I possibly mount a standard home air filter on the other side of that whole? Thanks in advance for your recommendations. I look forward to reading your interesting ideas.

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• Cooling a large laptop

  - by sazabi02

  I've had my first laptop early this year and I haven't the slightest idea how to make it cooler. No real problems when I don't use graphics intensive games but when I play games like Dragon Age the temps rise up from 55 to 85. I'm concerned as a friend tells me that HP laptops aren't reputed to last long when it comes to heat. BTW, I've already bought a cooling pad with 3 fans and it didn't do much that elevating it and pointing an electric fan at it didn't do before. Additionally, this is a 17 inch HP dv7-3085dx entertainment notebook that i'm using.

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• ATI Radeon HD 5770 Cooling

  - by Murtez

  I have a Radeon HD 5770 manufactured by ATI. In the course of using compressed air to clean it the fan shattered. I put a case fan on the card to cool it, but it's not doing a great job; the temperature goes to nearly 100 sometimes. The card is not overclocked or anything, the PC itself is clean. I looked around for a third party cooling system but the only one I found was the Accelero L2 Pro. It's low on stock and I don't know how great it will be, some review say it may not fit on all 5770 cards. Does anyone know of another one that will work? Help is much appreciated.

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