Discharge given Time at 1st and 2nd Instance evaluator uses Discharge = Change in Drawdown/((2.303*log((Time of Drawdown (t2) in Wells/Time of Drawdown (t1) in Wells),10))/(4*pi*Time in Hours for Well Discharge)) to evaluate the Discharge, Discharge given Time at 1st and 2nd Instance formula is defined as a measure of the rate of fluid flow in an unsteady flow context, where the flow rate varies with time, and is used to quantify the amount of fluid that passes through a given surface per unit time. Discharge is denoted by Q symbol.
How to evaluate Discharge given Time at 1st and 2nd Instance using this online evaluator? To use this online evaluator for Discharge given Time at 1st and 2nd Instance, enter Change in Drawdown (Δd), Time of Drawdown (t2) in Wells (t2sec), Time of Drawdown (t1) in Wells (t1) & Time in Hours for Well Discharge (thr) and hit the calculate button.