online_pipeflow_discharge:  Calculation of discharge in a pipe Online headloss in a pipe Online diameter in a pipe A* = D1.5(g hf/L)0.5 ν = f(T) ; Q = -2.22 A* D log {(ks/(3.7D)) + (1.78 ν/A*)} [SI units: Q in m3/s; D in m; T in °C; h in m] [U.S. units: Q in cfs; D in ft; T in °F; h in ft] INPUT DATA: Select:   SI units (metric) U.S. Customary units Head loss hf :         Warning: Undefined variable $headlossunits in /var/www/html/ponce/onlinepipeflowdischarge.php on line 503      Pipe length L :         Warning: Undefined variable $pipelengthunits in /var/www/html/ponce/onlinepipeflowdischarge.php on line 511 Pipe diameter D :         Warning: Undefined variable $diameter1units in /var/www/html/ponce/onlinepipeflowdischarge.php on line 520      Temperature T :         Warning: Undefined variable $temperatureunits in /var/www/html/ponce/onlinepipeflowdischarge.php on line 528  Select: Absolute roughness ks :     A. Riveted steel B. Concrete C. Cast iron D. Galvanized iron E. Asphalted cast iron F. Commercial steel or wrought iron G. Drawn tubing     OUTPUT: Q =  Warning: Undefined variable $discharge in /var/www/html/ponce/onlinepipeflowdischarge.php on line 562 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinepipeflowdischarge.php on line 562 0   Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlinepipeflowdischarge.php on line 562 • Pipe Flow on Wikipedia   Your request was processed at  10:49:14 pm on April 3rd, 2025   [ 250403  22:49:14 ]. Thank you for running online_pipeflow_discharge.   [190605]