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udf - coordinate problem

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May 21, 2017, 08:35	udf - coordinate problem	#1
hilmy_oz New Member Hilmy Muhammad Fauzan Join Date: May 2017 Location: Indonesia Posts: 1 Rep Power: 0	Hi there, I'm trying to write an UDF which calculates slip at journal bearing wall. I am using the UDF I found from this forum: goo.gl/aE54Jz but it doesn’t work on journal bearing (probably because journal bearing use cylindrical coordinate system). Do anybody know how to convert the cartesian velocity field (ux, uy, uz) into a cylindrical velocity field (u_radial, u_tangential, u_axial) and how to derivate it (du dr, du dθ, du dz)? I am looking forward for your respond. Thank you. Best regards Hilmy M. Fauzan

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