Changes between Version 14 and Version 15 of doc/tec/rk3


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Timestamp:
Feb 23, 2021 3:49:18 PM (4 years ago)
Author:
wagner
Comment:

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  • doc/tec/rk3

    v14 v15  
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    43 For reasons of clarity the [../../app/inipar#timestep_scheme time integration] for several schemes (further schemes are: Leapfrog, Euler and 2^nd^ order Runge-Kutta scheme) is implemented as follows (here e.g. the u-component of velocity):
     43For reasons of clarity the [../../app/initialization_parameters#timestep_scheme time integration] for several schemes (further schemes are: Leapfrog, Euler and 2^nd^ order Runge-Kutta scheme) is implemented as follows (here e.g. the u-component of velocity):
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    5959|| {{{1}}} || {{{8/15}}} || {{{1/15}}} || {{{0}}} || {{{1}}} || 3^rd^ substep
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    61 {{{u_p}}} is the prognosticated and {{{u}}} the current velocity at each substep. {{{u_m}}} denotes the velocity of the previous substep (needed for Leapfrog). {{{tend}}} is the current tendency and {{{tu_m}}} the combined tendencies of the prior substeps. {{{tsc(4)}}} steers the preconditioning of the [../../app/inipar#psolver pressure solver] and {{{tsc(5)}}} the [../../app/inipar#rayleigh_damping_factor rayleigh damping]. 
     61{{{u_p}}} is the prognosticated and {{{u}}} the current velocity at each substep. {{{u_m}}} denotes the velocity of the previous substep (needed for Leapfrog). {{{tend}}} is the current tendency and {{{tu_m}}} the combined tendencies of the prior substeps. {{{tsc(4)}}} steers the preconditioning of the [../../app/initialization_parameters#psolver pressure solver] and {{{tsc(5)}}} the [../../app/initialization_parameters#rayleigh_damping_factor rayleigh damping]. 
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