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is the mass of water released from storage ([M]); and is the decline in hydraulic head ([L]). Volumetric specific storage (or volume-specific storage) is the volume of water that an aquifer releases from storage, per volume of the aquifer, per unit decline in hydraulic head (Freeze and Cherry, 1979):
The table values for −100 °C to 100 °C were computed by the following formulas, where T is in kelvins and vapor pressures, P w and P i, are in pascals. Over liquid water. log e (P w) = −6094.4642 T −1 + 21.1249952 − 2.724552×10 −2 T + 1.6853396×10 −5 T 2 + 2.4575506 log e (T)
Sludge Volume Index (SVI) is a process control parameter used to describe the settling characteristics of sludge in the aeration tank of an activated sludge process. [1] It was introduced by Mohlman in 1934 and has become one of the standard measures of the physical characteristics of activated sludge processes.
volume total volume of the body of water (cubic metres, cubic kilometres, cubic miles [cu mi], and/or acre-feet) Sample value: 11.8 km³ To convert acre-feet, use {{convert|1234567|acre.ft|abbr=on}} this renders as 1,234,567 acre⋅ft (1.522816 × 10 9 m 3) residence_time residence time of the body of water or lake retention time (generally in ...
e * is the saturation water vapor pressure T is the absolute air temperature in kelvins T st is the steam-point (i.e. boiling point at 1 atm.) temperature (373.15 K) e * st is e * at the steam-point pressure (1 atm = 1013.25 hPa) Similarly, the correlation for the saturation water vapor pressure over ice is:
In fluid dynamics, total dynamic head (TDH) is the work to be done by a pump, per unit weight, per unit volume of fluid.TDH is the total amount of system pressure, measured in feet, where water can flow through a system before gravity takes over, and is essential for pump specification.
The two Amott indices are often combined to give the Amott–Harvey index. It is a number between −1 and 1 describing wettability of a rock in drainage processes. It is a number between −1 and 1 describing wettability of a rock in drainage processes.
This template calculates the volume of a three-dimensional space. This is for cubic feet, cubic centimeters, etc., not for converting linear measures to things like gallons. It only accepts numeric input, not units, and does not perform conversions.