Estimate the impact of viscous terms in 2D.
We use an estimate for mu(dv/dx) from the deviations and derivative estimates of the conservative variables: dm/dx = dv/dx * rho + drho/dx * v dv/dx = (dm/dx - drho/dx * v)/rho dv/dx < (max(dm/dx) - max(drho/dx) * max(v))/min(rho) dv/dx < (max(dm/dx) * min(rho) - max(drho/dx) * max(m) ) / min(rho)*2
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(atl_navierStokes_type), | intent(in) | :: | nvrstk |
Description of the equation |
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| real(kind=rk), | intent(in) | :: | mean(:) |
The mean of each state variable. |
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| real(kind=rk), | intent(in) | :: | deviation(:) |
Estimation of maximal deviation of each state. |
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| real(kind=rk), | intent(in) | :: | grad(:) |
Estimation of maximal gradient of each state. |
Resulting indication whether viscous terms can be neglected.