Hi Andrew,

In our case we use second order and this is what we prescribe in the session file:

[...]

[...]

</SOLVERINFO>

Cheers,

Margarida

On Fri, 27 Jan 2023 at 11:03, Andrew Barnes <A.Barnes2@lboro.ac.uk> wrote:

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Hello everyone,

I'm trying to use the DIRK Time Integration methods in the CompressibleFlowSolver but keep getting an error when trying to specify the order and variant.

If I specify only <I PROPERTY="TimeIntegrationMethod" VALUE="DIRK" /> in SolverInfo it will work perfectly, however I am unsure which order this is using. When I try to define VALUE="DIRKOrder3" or in a separate TIMEINTEGRATIONSCHEME section as below instead, it will produce the error bad_function_call.

<TIMEINTEGRATIONSCHEME>

<METHOD> DIRK </METHOD>

<ORDER> 3 </ORDER>

</TIMEINTEGRATIONSCHEME>

Could anyone clarify:

Which order is used for the default "DIRK" model?
What would be the correct way to specify the order of DIRK model?

Thank you in advance,

Andrew

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