High Y plus wall values despite sizing, inflation and refinement
 

i am getting high wall y plus values despite sizing, inflation and refinement. i am gtg value in exp of 5 or 4 desired values are for SA model. help required.
regards

Could you rephrase the question? I didn't get it.

elaboration of the query
 

sir i am interested to model flow around an aircraft at mach 0.8. i am using SA model and facing problem of high y plus value they are in range of 3 exp 5. i have refined my mesh and changed settings for my inflation layers. however yet the values are not coming down. need guidance on this issue.
regards

What's the thickness of the first cell at the wing? What's the size of the aircraft?

Did I get you correctly? Althoug you change the thickness of the first cell, the Yplus values do not change?
I can't recall such a bug in Fluent.

calrifications
 

the size of aircraft is around 18 m long and the thickness of first layer is 1 exp -7. still the Y plus is very high. may be i am doing some things wrong. the mesh quality as per skewness and orthogonal quality is good.
regards

So your first layer thickness is 100nm? Did your solution converge? What's the largest residual?

Convergence values
 

sir the convergence values are 1 exp -3. i have also used mesh adaptation but no avail. i seek guidance on this regard.
thanx

I guess you have not scaled your mesh in fluent, check upon this. BTW you are using structured hexa mesh or tetra mesh for your problem?

RE: CFD seeker sir
 

sir mesh is scaled in the same units. i have tried both hexa and tetra meshes to get desired values but no avail.
regards

could you please share your geometry and mesh file with me along with flow and boundary conditions if its not confidential, I will try on it and will let you know.... are you making your mesh in ICEM or Gambit or anyother software?

geometry sharing
 

sure sir if i may have ur email address. my email is naumaneshanhashmi@gmail.com if you can send me a blank email, i will send you the requisite files.
regards

my email id is yasirforfriends@yahoo.com

kindly mail me the parasolid or acis(sat) version of your geometry as I use ICEM for meshing. Thanks

Regards