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Mayank Bajpai

Velocity calculation in GMS

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Can anyone please tell me that how velocity is calculated from flow data in GMS(not through GUI).

Though I had already referred to the following the link:


,the velocity calculated by me is not matching the velocity obtained through GMS.

I had applied the following for the calculation of velocity:

 V = Q/(saturated_area*porosity);


Q is the flow through a cell face, obtained from ccf file,

Saturated area = (head-bottom_elevation)*cell_width {for unconfined aquifer}

and head is obtained through .hed file.

Thanks in advance. Have a great day!

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Please try removing the porosity from your equation. Probably, the model calculates the Darcys Velocity , which is simply equals to  Q / saturated_area.

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