Cylindrical coordinate sysyem-Gambit

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Discussion Overview

The discussion revolves around the use of cylindrical coordinates in the Gambit software for a 3D simulation problem. Participants explore how to represent cylindrical coordinates (r, z, θ) within a system that primarily displays Cartesian coordinates (X, Y, Z).

Discussion Character

  • Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant seeks to display cylindrical coordinates in Gambit but finds that the software defaults to Cartesian coordinates despite changing settings.
  • Another participant suggests a method from a different mesher, ICEM, where one can mesh a "slice" and then use an extrude option to create a cylindrical mesh.
  • A different approach proposed involves creating user variables using transform functions to plot variables against cylindrical coordinates.
  • One participant mentions the possibility of exporting a formatted text file and writing a converter to transform Cartesian values into cylindrical equivalents.

Areas of Agreement / Disagreement

Participants do not reach a consensus on how to effectively display cylindrical coordinates in Gambit, with multiple approaches and methods being discussed without agreement on a definitive solution.

Contextual Notes

There are limitations regarding the specific capabilities of Gambit in handling cylindrical coordinates, and the discussion does not resolve the effectiveness of the proposed methods for achieving the desired output.

noussa
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hi,
i am doing a simulation of 3D problem.i want to draw it cylindrical coordinate sysyem(r,z, o).but gambit shows X , Y , Z Coordinate . how to do in cylindrical co ordinate , will it show r, z and o axis ?
i opened the Tools command button then i changed the co ordinated system to cylindrical and I acctivé it . but it still at cartesien coordinate

please reply
 
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From what I know, Gambit is the mesher used for Fluent (neither of which I've used). Speaking from another ANSYS mesher, ICEM, what we typically did when trying a cylindrical domain is to simple mesh a "slice". After that, there is an extrude option. That option gives you the option to basically revolve the current mesh around. That..gives you a cylindrical mesh.

If you simply want to plot variables against cylindrical coordinates, then just create user variables using transform functions.
 
thank you for your reply but t is not what I seek to carry out, indeed gambit uses the Cartesian coordinate , but I wants apparaitre the cylindrical co-ordinates (R, Z, O) because I will export an ASCII file from gambit containing the cylindrical co-ordinates.
thank.
 
At the very least, you could write out the file in some formatted text file, and then write a converter to read in the cartesian values and calculate the cylindrical equivalent.
 
thank a lot, i will try..
 

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