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deltaT value significance
Title
Question
What is the significance of deltaT value?
Can we use different value? What happens if we increase or decrease its value?
How it relates to courant (CFL) number?

OpenFOAM-version-7 Setting-up-a-Test-Case-in-OpenFOAM 08-09 min 0-10 sec 23-09-20, 9:43 a.m. divyesh7

Answers:

It is required to set deltaT value wisely otherwise simulation will stop/kill the process.
We can use different values. If we increase its value too much, simulation will crash. If we decrease its value, simulation will take more time to run but in some cases it will give you accurate results.

For CFL number and deltaT calculations please refer to the Additional Reading material on this page.

Thanks,
Divyesh Variya
23-09-20, 9:46 a.m. divyesh7

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