edge sizing controlCalculate celltocell expansion rate from bias factor
Hi Everyone,
could someone tell me how to calculate first cell height and celltocell growth rate from bias factor and number of cells? It would be very important. Anyway why does the Workbench Mesher use this kind of sizing (with bias factor) on the edges? Cell height and growth rate of successive cells is more useful IMO. Thanks for the answer in advance! 
ohh I got it
I figured it out...
Using the following notations: Edge length L Number of cells n Total expansion ratio r (=bias factor in Ansys Meshing) Celltocell expansion k (or geometric growth ratio) Start cell size ds End cell size de The equations to be fulfilled: L=sum(ds*k^i), i=0..n1 de/ds=r=k^(n1) From the above 3 equations any 3 of the 6 unknown mesh parameters can be calculated. See this thread too where a guy made a code to carry out the calculations for any knownunknown combinations of the 6 parameters. http://www.cfdonline.com/Forums/ope...alculator.html 
Can you explain it in more detail

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