Understanding time-varying time step

Time-varying time step lets you define a integration time step size that varies with time when you use the transient solution. Using this option, you can control result sampling for those portions of the solution interval where the results data changes rapidly.

For example, if you want to sample every 60s until you reach 960s, then every 10s until you reach 1000 seconds, you create the table:

Times	Time intervals
0	60
900	60
960	10
990	10

The time step size is a linear interpolation of the table data. Therefore, if you create the following table:

Times	Time intervals
0	60
60	50
400	100
1000	150

Your results samples are

Increments	Time intervals
1	0
2	60
3	110
4	167.35
5	233.14
6	308.6
7	395.16
8	494.44
9	602.32
10	719.18
11	845.77
12	982.92
13	1000

How do I

Define Advanced Parameters

Define Generic Entities

Learn more

Solution options

Understanding thermostat options for steady state analyses

Thermal initial conditions

3D flow initial conditions

Understanding ambient conditions

Joining fluid meshes

Understanding the turbulence models

Understanding out-of-bound options for time-dependent tables

Setting turbulence scale values

Turbulence Characteristics

Including additional input files for thermal analysis

Restarting a solution

Target Temperature and Target Temperature Change

Solving the model

Look up more details

LES — Large Eddy Simulation

Adaptive time stepping method

Parallel flow solver schemes

Computed quantities for multiple convective BCs

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal boundary conditions

Understanding time-varying time step, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });