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

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.