online_explicit_discharge:  Explicit equation for pipe discharge Q Comparison of laminar and turbulent flow      ν = f(T) A* = D3/2(ghf/L)1/2 Q = - 2.22 A* D log[(ks/D)/3.7 + 1.78ν/A*] [SI units: D in m; hf in m; L in m; T in °C; Q in m3/s] [U.S. units: D in ft; hL in ft; L in ft; T in °F; Q in cfs] Explicit equation for diameter Explicit equation for friction factor INPUT DATA: Select:   SI units (metric) U.S. Customary units Pipe diameter D :         Warning: Undefined variable $pipediameterunits in /var/www/html/ponce/onlineexplicitdischarge.php on line 433 Head loss hf :         Warning: Undefined variable $headlossunits in /var/www/html/ponce/onlineexplicitdischarge.php on line 440 Pipe length L :         Warning: Undefined variable $pipelengthunits in /var/www/html/ponce/onlineexplicitdischarge.php on line 447 Relative roughness ks /D :         Temperature T :         Warning: Undefined variable $temperatureunits in /var/www/html/ponce/onlineexplicitdischarge.php on line 461 OUTPUT: Q  =  Warning: Undefined variable $discharge in /var/www/html/ponce/onlineexplicitdischarge.php on line 475 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlineexplicitdischarge.php on line 475 0   Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlineexplicitdischarge.php on line 475   Your request was processed at  10:47:17 pm on April 3rd, 2025   [ 250403  22:47:17 ]. Thank you for running online_explicit_discharge.   [160607]