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Copy file name to clipboardExpand all lines: docs/documentation/case.md
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@@ -832,7 +832,6 @@ When ``polytropic = 'F'``, the gas compression is modeled as non-polytropic due
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|`mixlayer_vel_profile`| Logical | Set the mean streamwise velocity to hyperbolic tangent profile |
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|`mixlayer_vel_coef`| Real | Coefficient for the hyperbolic tangent profile of a mixing layer |
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|`mixlayer_perturb`| Logical | Perturb the initial velocity field by instability waves |
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|`mixlayer_domain`| Real | Domain size of a mixing layer for the linear stability analysis |
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The table lists velocity field parameters.
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The parameters are optionally used to define initial velocity profiles and perturbations.
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-`perturb_sph_fluid` specifies the fluid component whose partial density is to be perturbed.
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-`mixlayer_vel_profile` activates setting the mean streamwise velocity to a hyperbolic tangent profile. This option works only for 2D and 3D cases.
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-`mixlayer_vel_profile` activates setting the mean streamwise velocity to a hyperbolic tangent profile. This option works only for `n > 0`.
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-`mixlayer_vel_coef` is a parameter for the hyperbolic tangent profile of a mixing layer when `mixlayer_vel_profile = 'T'`. The mean streamwise velocity profile is given as:
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$$ u = patch\_icpp(1)\%vel(1) * tanh(y\_cc * mixlayer\_vel\_profile) $$
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$$ u = \mbox{patch\_icpp(1)\%vel(1)} * \tanh( y_{cc} * \mbox{mixlayer\_vel\_coef}) $$
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-`mixlayer_perturb` activates the perturbation of initial velocity by instability waves obtained from linear stability analysis for a mixing layer with hyperbolic tangent mean streamwise velocity profile. This option only works for `n > 0`, `bc_y%[beg,end] = -6`, `num_fluids = 1`, `model_eqns = 2` and `mixlayer_vel_profile = 'T'`.
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-`mixlayer_domain` defines the domain size to compute spatial eigenvalues of the linear instability analysis when `mixlayer_perturb = 'T'`. For example, the spatial eigenvalue in `x` direction in 2D problem will be $2 \pi \alpha / (mixlayer\_domain*patch\_icpp(1)\%length\_y)$ for $\alpha = 1$, $2$ and $4$.
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-`mixlayer_perturb` activates the velocity perturbation for a temporal mixing layer with hyperbolic tangent mean streamwise velocity profile, using an inverter version of the spectrum-based synthetic turbulence generation method proposed by Guo et al. (2023, JFM). This option only works for `p > 0` and `mixlayer_vel_profile = 'T'`.
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