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HiFiLES / HiFiLES-solver

High Fidelity Large Eddy Simulation Solver
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How to estimate the first layer thickness on a wall when using HiFiLES? #103

Closed popstar0426 closed 8 years ago

popstar0426 commented 8 years ago

Hi: The wall distance is normally required around y+ =1 in DNS or Wall Resolved LES. How about the mesh requirement in HiFiLES? How to estimate the first layer thicknes on a wall when using HiFiLES?

Best regards! Yue

mlopez14 commented 8 years ago

Here is a neat calculator for finding the width of the element closest to the no-slip boundary. http://www.pointwise.com/yplus/ This calculator is intended for 2nd order methods, so multiply whatever width this calculator suggests by (p+1)/2, where p is the degree of the polynomial you are using to approximate the solution.

In this way, the first degree of freedom will be at a distance close to y+

popstar0426 commented 8 years ago

Can HiFiLES solve a flow with Ma =0.025?

Best regards!

mlopez14 commented 8 years ago

Yes, using the Rusanov flux.

On Thu, Oct 15, 2015 at 8:59 PM, popstar0426 notifications@github.com wrote:

Can HiFiLES solve a flow with Ma =0.025?

Best regards!

— Reply to this email directly or view it on GitHub https://github.com/HiFiLES/HiFiLES-solver/issues/103#issuecomment-148594520 .