Mapping
The Mapping () study is a dedicated study to use when mapping stationary flow data to an acoustics destination mesh. The study can be used in combination with multiphysics couplings to an aeroacoustics physics or on its own when simply importing CGNS flow data.
In the multiphysics context, the Background Fluid Flow Coupling couples a Fluid Flow interface or the The Imported Fluid Flow Interface to an Aeroacoustics interface. The study uses a Stationary solver. Together with the multiphysics coupling, the study handles the mapping of dependent variables between the fluid flow mesh and the acoustics mesh for consistent simulation results.
When used on its own, solving only for The Imported Fluid Flow Interface, the CGNS data linked in the physics will be mapped consistently to the destination mesh.
Physics and Variables Selection
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If coupling acoustic to The Imported Fluid Flow Interface, then select both the Background Fluid Flow Coupling and the Imported Fluid Flow physics as being Solved for.
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If coupling acoustics to a Fluid Flow interface, then only select the Background Fluid Flow Coupling as being Solved for. No other physics will be solved by the mapping study.
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If only importing stationary CGNS data using The Imported Fluid Flow Interface, then select only the Imported Fluid Flow physics as being Solved for.
Data to Map
From the Source list select:
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Imported data if coupling to the Imported Fluid Flow physics or only mapping using the Imported Fluid Flow, or
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select the study containing the coupled Fluid Flow physics interface to map. Depending on the type of study, used for the fluid flow simulation, you will get a different type of list to choose from: time steps or parameter values. From the list, select the appropriate solution or solutions to map. The option All will automatically add a parameter sweep and map all parameter values from the selected solution. The Mapping study step will automatically ensure that those parameter values are used.
Note that the mapping does not benefit from running continuation for any parameter. When the solution is mapped for all parameter values, for a multiple parameter sweep where continuation was used in the fluid flow study, the resulting dataset structure of the two studies will therefore be slightly different.
Destination Mesh Selection
Select the destination/target mesh of the mapping, that is, the acoustics mesh used for the aeroacoustics simulation.