Dear all I would like to get some advice from you that I am confused to convert the Cartesian coordinate system to a flow-oriented coordinated system?

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George J. Strachan

Tigistu,

search for ‘flow geometry coordinates” and it should throw up a Science Direct website on Flow Geometry. It’s maths are beyond me, but the explanations are good.

George Strachan

Stuart E. Hamilton

Both GRASS and ArcGIS will give you flow directions from a surface.

Ferdous Ahmed

In the field of 3D boundary layer, a term 'streamflow coordinate system' is used to describe the flow equations. I believe this is the same as flow-oriented coordinate system. Anyway, the streamflow coordinate system offers many advantages to the analyst since many of the terms in Navier-Stokes equation become simpler. You may search the literature in the area mechanical or aeronautical engineering. From years ago (about 30 years), I remember names like Johnston, Pierce, and Bradshaw.