Hi Shujie,

Adaptation will be applied at the end of a run, which consists of “NumSteps” steps. You will need to set a “NumRuns” higher than 1 so that the simulation is continues after adapting at the end of the first run. See the user guide (http://doc.nektar.info/userguide/latest/user-guidese46.html#x63-26200010.7) for more information.

Best,

Julian Marcon

Early Stage Researcher

Department of Aeronautics / Aerodynamics Section

Imperial College London, City and Guilds Building, Room 420

London SW7 2AZ, United Kingdom

Mob.: +44 (0)7449 121911

From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> On Behalf Of ???
Sent: 14 July 2019 17:05
To: nektar-users <nektar-users@imperial.ac.uk>
Subject: [Nektar-users] p adaption for compressible flow solver

Hi All,

I am using Nektar++ compressible flow solver. I noticed the p-adaptive algorithm can be used to optimize the computational cost. 

I have read the user guide but I still do not know how to perform it. I just add the AdaptiveModes and AdaptiveMinModes in the parameters. The SolverInfo like this:

         <SOLVERINFO>

            <I PROPERTY="EQTYPE" VALUE="EulerCFE" />

            <I PROPERTY="Projection" VALUE="DisContinuous" />

            <I PROPERTY="TimeIntegrationMethod" VALUE="ClassicalRungeKutta4" />

            <I PROPERTY="UpwindType"  VALUE="Roe"/>

            <I PROPERTY="Driver"                VALUE="Adaptive" />

        </SOLVERINFO>

I use FieldConver -m nummodes to see the polynomial order distributions. But it seems the polynomial order is not changed in the fields.

Does anyone familiar with it? I found a paper in 2013 about an inviscid transonic flow past a NACA0012 airfoil. I think this approach can be done by compressible flow solver.

Many thanks for your help!

Shujie

University of Southampton