Compute volume

Compute volumes defined by a upper and lower values in polygons for all frames. Upper values corresponds to a scalar variable, whereas lower values can be zero, a constant (initial frame) or another variable.

Positive and negative volumes for each polygon can be computed in addition to the net volume.

Typical volume computations

Upper values	Lower values	Interpretation
WATER DEPTH	0	Liquid volume
FREE SURFACE	BOTTOM
BOTTOM	RIGID BED	Solid volume
BOTTOM	initial values	Solid volume from beginning
BED SHEAR STRESS	0	Bottom friction force (approx.)

⚠️ The computed solid volumes are apparent and include the void (Depending what you want, do not forget to take into account the porosity).

Interface