AppBrain appshttp://www.appbrain.com/browse/dev/Transparent+BlueSearch the Android market and discover the best Android apps from AppBrain, the leading Android app directory.en-usAndroidGoogle PlayMobile appsAppBrainAppBrain Web 4.0 Content Management SystemWater Headloss Calculatorhttp://www.appbrain.com/app/water-headloss-calculator/com.transparentblue.headlosshttp://www.appbrain.com/app/water-headloss-calculator/com.transparentblue.headlosshttp://www.appbrain.com/app/water-headloss-calculator/com.transparentblue.headloss#commentsMon, 07 May 2012 16:15:17 +0000The Hazen–Williams equation is an empirical formula which calculates pressure drop of water in circular pipes caused by friction. It is used in the design of water pipe systems such as fire sprinkler systems, water supply networks, and irrigation systems. <br><br>The Hazen–Williams equation has the advantage that the coefficient C is not a function of the Reynolds number, but it has the disadvantage that it is only valid for water. <br>Input parameters are flow, pipe diameter, lenght of pipe and C is a roughness coefficient, known as William Hazens coefficient, with values between 90 (more rough pipes) and 140 (smooth pipes, ex PVC). <br><br>You can select between imperial (U.S. customary units) and metric unit (International System of Units).<br><br>If you want to take into account the pressure loss in fittings and valves, and the selection coefficient C for each material, then find our version of the application pro at https://play.google.com/store/apps/details?id=com.transparentblue.headlossplus<br><br>Recent changes:<br>- Some UI improvements.Pipe Headloss Calculator Plushttp://www.appbrain.com/app/pipe-headloss-calculator-plus/com.transparentblue.headlossplushttp://www.appbrain.com/app/pipe-headloss-calculator-plus/com.transparentblue.headlossplushttp://www.appbrain.com/app/pipe-headloss-calculator-plus/com.transparentblue.headlossplus#commentsSun, 18 Nov 2012 15:35:46 +0000Pipe Headloss Calculator Plus app can be used for estimating frictional head loss in pipes. This app version compared to the free includes fittings and valves calculation and selection of the pipe material. <br><br>The total pressure loss in the system results from the combined losses due to friction in length of pipe and friction losses due to valves, fittings, and other components. The first are "major losses" associated with energy loss per length of pipe, and seconds are "minor losses" associated with bends, fittings, valves, etc. <br><br>The factors that determine friction losses in pipe are:<br><br>The velocity of the water: As velocity increases, pressure losses increase. Velocity is directly related to flow rate. <br><br>The size (inside diameter) of the pipe: Smaller pipe causes a greater proportion of the water to be in contact with the pipe, which creates friction. Pipe size also affects velocity. Given a constant flow rate, decreasing pipe size increases the water’s velocity, which increases friction.<br><br>The roughness of the inside of the pipe: Pipe inside wall roughness is rated by a C factor, which can be selected depending on material of pipe. The lower the C value, the rougher the inside and the more pressure loss due to friction.<br><br>The length of the pipe: The friction losses are cumulative as the water travels through the length of pipe. The greater the distance, the greater the friction losses will be.<br><br>The friction losses for, elbows, and tees can also be selected. The friction losses in fittings such as couplings, elbows, tees, valves and other elements play a role. Friction loss from these components must be taken into account when calculating friction losses for each section of pipe. <br><br>Calculation of friction factor is based on the Hazen-Williams equation. Local resistances factor K for valves and some fittings (tees, elbows, pipes contraction and enlargement), can be found in app itself.<br><br>Example: <br>Calculate pressure losses in a pumping of 10 l / s. The diameter of the suction and discharge is 100 mm or 4 ". We have the following items on the Suction: 1 foot valve, 1 gate valve , 1 elbow 90, 1 contraction to 3" to entering the pump. In the discharge we have: 1 expansion, 2 elbow 90, <br>a check valve, 1 gate valve. The total pipe length is 10 meters in diameter of 100 mm. Must be calculated the pressure losses for the given flow.<br><br>Recent changes:<br>- Some UI improvements.WatDis Pipe network analysishttp://www.appbrain.com/app/watdis-pipe-network-analysis/com.transparentblue.watdis_mobilehttp://www.appbrain.com/app/watdis-pipe-network-analysis/com.transparentblue.watdis_mobilehttp://www.appbrain.com/app/watdis-pipe-network-analysis/com.transparentblue.watdis_mobile#commentsSun, 18 Nov 2012 15:35:46 +0000WatDis is a water distribution analysis application, featuring:<br> <br>• Allows working with junctions, pipes, reservoirs, tanks, pumps, valves and simple controls.<br>• Patterns and Curves.<br>• WatDis Desktop compatible, with native .WTDM format.<br>• Steady state and extended period simulations.<br>• Color schemes for properties visualization.<br>• SI and US unit systems.<br>• Epanet compatible. Imports and exports .INP files.<br>• Compatible with most Android tablet and phone models.<br><br>Read before using it: <br>- If you get message "Unable to open the file", then you may need an app like "OI file manager" to open inp files. You can find it in "google play". It's free. <br>- To create or edit pipes and nodes, you have to use "Edition option"Open Channel Flow Calculatorhttp://www.appbrain.com/app/open-channel-flow-calculator/com.transparentblue.canalhttp://www.appbrain.com/app/open-channel-flow-calculator/com.transparentblue.canalhttp://www.appbrain.com/app/open-channel-flow-calculator/com.transparentblue.canal#commentsWed, 16 May 2012 02:14:32 +0000It allows to calculate the flow is conducted in an open channel for the given data, under uniform steady flow. It uses the Manning’s Equation. <br><br>The input data are channel bottom and top width (for rectangular channels they era the same value), the slope of the channel the depth and roughness n is the Manning’s coefficient (dimensionless) – values developed through experimentation. <br><br>The app can be used in the SI or US units.Sewer design calculationshttp://www.appbrain.com/app/sewer-design-calculations/com.transparentblue.alcanthttp://www.appbrain.com/app/sewer-design-calculations/com.transparentblue.alcanthttp://www.appbrain.com/app/sewer-design-calculations/com.transparentblue.alcant#commentsSun, 18 Nov 2012 15:39:16 +0000Calculate the design diameter and slope for a section of sewer pipe. <br><br>The Manning Equation is used for Calculation of Pipe Diameter and Slope.<br><br>Input data are design flow, elevations of ground initial and final.<br><br>The app can be used in the SI or US units.<br><br>Example: The design flow rate for a section of storm sewer between two manholes is: Qdes = 10 l/s. Find a combination of a standard pipe diameter and pipe slope to use for this section of sewer to meet the criteria of minimun tractive force. <br><br>The required minimum tractive force for sanitary sewer in the app is considered as 2 N/m2. <br><br>See solution of example in the screenshot. <br>- Initial ground elevation = 10 m (ground elevation of initial and final manholes is used to calculate the ground slope and check that slope of the pipe is not less than ground).<br>- Final ground elevation = 9 m<br>- Length of pipe = 60 m<br>- Desired flow = 40 liters per seconds<br><br>And as a result of the design, after pressing the calculate button, we get the following results:<br><br>Slope: 0.02 m / m, equivalent to 2%<br>Pipe diameter: 0.3 m<br>height of water in the pipe (depth / diameter): 40%<br><br>Recent changes:<br>Improvements. Errors in labels are corrected. Simplified a bit with the incoming data.Sun, 18 Nov 2012 15:39:16 +0000Sun, 18 Nov 2012 15:39:16 +0000