pfcalc是一种便携式的CLI 程序的命令行工具，用于计算管道摩擦和通过使用Darcy-Weisbach equation进行压力耗损。
pfcalc is a CLI program that computes pressure loss using the Darcy-Weisbach equation. Data can be fed through command line arguments or can be read from a comma separated ">values file (csv). This is a text file that contains values separated by commas and can be exported from various spreadsheet programs. Every line is a data set that contains the following values, in this order: diameter, length, roughness, elevation, flowrate, minor loss coeficient (K-factor), temperature. The program will read the file, make a calculation for every data set and print the result. Calculation results can be exported to a csv file that will contain a result per line, with values in this order: diameter, length, roughness, flow, temperature, velocity, Reynolds number, Darcy factor, hidrostatic pressure loss, minor pressure loss, major pressure loss.
pfcalc 0.7版本更新日志：
－The licensing was upgraded to GPLv3.
－The word "beta" was removed from the version description.
－The #define directives for TRUE and FALSE were replaced with an enum construct.
－Long arguments (GNU-style arguments) were implemented.
－Some code was cleaned up.
－The man page was updated.
－The unused file pfcalcrc was removed from the distribution package.
下载地址：http://nchc.dl.sourceforge.net/project/pfcalc/pfcalc/0.7/pfcalc-0.7-win32.exe