Changes between Version 22 and Version 23 of doc/app/runtime_parameters
- Timestamp:
- Sep 13, 2010 1:27:40 PM (15 years ago)
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doc/app/runtime_parameters
v22 v23 69 69 In order to speed-up performance, the Poisson equation for perturbation pressure (see [[psolver]]) can be called only at the last substep of multistep Runge-Kutta timestep schemes (see [[timestep_scheme]]) by setting '''call_psolver_at_all_substeps''' = ''.F.''. In many cases, this sufficiently reduces the divergence of the velocity field. Nevertheless, small-scale ripples (2-delta-x) may occur. In this case and in case of non-cyclic lateral boundary conditions, '''call_psolver_at_all_timesteps''' = ''.T.'' should be used. 70 70 }}} 71 |----------- 71 |---------------- 72 72 {{{#!td style="vertical-align:top" 73 73 [=#cfl_factor '''cfl_factor'''] … … 87 87 The default value for the Euler scheme is '''cfl_factor''' = 0.8 . 88 88 }}} 89 |--- 89 |---------------- 90 90 {{{#!td style="vertical-align:top" 91 91 [=#create_disturbances '''create_disturbances'''] … … 105 105 Timesteps where a random perturbation has been imposed are marked in the local file [[RUN_CONTROL]] by the character "D" appended to the values of the maximum horizontal velocities. 106 106 }}} 107 |---- 107 |---------------- 108 108 {{{#!td style="vertical-align:top" 109 109 [=#call_psolver_at_all_substeps '''call_psolver_at_all_substeps'''] … … 117 117 {{{#!td 118 118 }}} 119 |--- 119 |---------------- 120 120 {{{#!td style="vertical-align:top" 121 121 [=#call_psolver_at_all_substeps '''call_psolver_at_all_substeps'''] … … 129 129 {{{#!td 130 130 }}} 131 |--- 131 |---------------- 132 132 {{{#!td style="vertical-align:top" 133 133 [=#call_psolver_at_all_substeps '''call_psolver_at_all_substeps''']
