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osamaghani June 12, 2012 02:24

Y plus values
I am modelling 2d flow over a bluff body..
Domain consists of Inlet, outlet, geometry(bluff body;wall), ground(wall) and far0field(wall)

1. I am using standard wall treatment and so the range of Y+ values should be in the range of 30 to 300..My question is should this condition be met on all the walls (ground...far-field..) of the domain or just the geometry(the bluff body) of interest... ?

2. To what extent can the Y+ lie out side this range..? I think its not very easy to get all the Y+ values in this range...

for example for 1 simulation Y+ values on bluff bogy are in the range of 4.5 - 600 and the average is I need to redo the grid?

I would really appreciate of you could also provide some reference :)

Far June 12, 2012 04:47

use scalable wall function instead of standard wall function.

osamaghani June 12, 2012 04:53

can you please elaborate....does fluent have that?...btw do these values seem good to you or??

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