Time steps

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  • Last Post 05 February 2019
designteam2 posted this 05 February 2019

When you set the number of time steps under the calculation tab, does this actually affect the simulation solution? I know time step size does, but how does setting the number of time steps influence the simulation?

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jpasquerell posted this 05 February 2019

See this ANSYS help link:   help/wb_sim/ds_Apply_Loads_Supports_step.html   .  For a linear static analysis the only effect is how many solution are done for that load step.  For example if the end time is 1.0 and you do 2 load steps with ramped loads then you solve with half the load at time of .5 and then at full load at time of 1.0.  For a nonlinear or transient the loading is split in the same way but it affects convergence plus in a transient there are time dependent items such as velocity and acceleration. 

rwoolhou posted this 05 February 2019

In Fluent the number of time steps determines how much time the model will simulate: ie you set a time step size and then solve a number of these steps. 

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