Differences between the pipe start and end elevations are taken into account in determining the overall pressure drop. Pipe diameters are included for Schedules 10S, 40 and 80 for pipes from 1/2 inch (15 mm) to 24 inch (600 mm), but any other pipe inside diameter can be entered manually. Pressure drops for changes in pipe size can be calculated for sudden expansions and contractions, conical tapered reducers and standard pipe reducers using the Hooper Method for the resistance coefficients (K-values). Dimensions of orifice plates can be specified to determine the permanent pressure drops. Cv values for control valves can be included. This allows accurate pressure drops to be calculated for pipe fittings, taking into account the fitting size (pipe diameter) and the Reynolds Number. Pipe fitting resistance coefficients (K-values) based on the Darby 3-K Method are included for a wide variety of generic pipe fittings. Pipe friction factors can be reported as Fanning, Moody, Darcy-Weisbach or Stanton friction factors to suit any industry convention. Use of the Churchill friction factor equation allows seamless coverage for fluid flow rate and pressure drop calculations in the laminar, critical, transition and fully turbulent flow regimes. Units handling is unparalleled, allowing the units for any individual property to be set independently, or in predefined sets (US Customary, SI and Metric) and user-defined sets of mixed units. 
The examples pages show the results from AioFlo compared with worked examples from well known and respected references. The accuracy of AioFlo has been validated by extensive in-house testing and by thousands of engineers applying it to real-world problems.Fluid flows can be given in mass or volumetric terms and viscosities in dynamic or kinematic units.AioFlo can be used for incompressible and compressible (isothermal) Newtonian single phase fluids. It is extremely flexible in that it can calculate any one of pipe diameter, fluid flow rate or pressure drop when given the other two.
It is based on the Darcy-Weisbach pipe sizing formula for liquid flow, and the integrated version for isothermal gas flow. AioFlo (pronounced aye-oh-flow) is a Windows software application that solves pipe sizing (diameter calculation), pressure drop and fluid flow rate hydraulic problems for single phase flow in single pipes.
0 kommentar(er)
