Dear C.Coulet
I found the key words to specify velocity for each source point in a steering file (VELOCITIES OF THE SOURCES ALONG X, VELOCITIES OF THE SOURCES ALONG Y), however, it cannot apply in our case as we want to give a list of source points from an external file. Imagine that the number of source point is many and discharges of source points are time-dependent.
The manual shows a possibility to program source points by defining functions VUSCE and VVSCE. We try with this approach and update later.
Thank you very much