ANSA Tutorial – HVAC MANIKIN

This tutorial will guide the user in preparing a car cabin model for an HVAC analysis with
passengers. So, the positioning of CFD manikins as well as the Mesh procedure is automated
using the ANSA Dummy Positioning Tool and the Batch Manager.
The steps described in this tutorial are:
– Read the ANSA file containing the cabin geometry or FE model.
– Merge the CFD dummy and place it in the cabin.
– Create three Batch Mesh Scenarios for the surface wrapping, the creation of the boundary layers
and the volume meshing respectively.
– With advanced filters define which regions will be included in each scenario.
– Set the mesh parameters and the quality criteria for each scenario.
– Using Size Boxes create refinement zones.
– Execute the Batch Meshing in one or more steps. It is recommended in two steps. First, the
surface mesh generation and then the volume mesh (layers and interior volume). This is because
the volume mesh depends on the surface mesh. So, you have to check first that the quality of the
surface mesh is the desired before you proceed to the volume mesh.

Prerequisites
This tutorial requires the familiarization of the user with the basic ANSA interface and terminology. It
is suggested that the user should go through the tutorials “External Aerodynamics” and “Batch
Mesh for CFD” in order to get familiar with the ANSA functionality and terminology used in this
tutorial. Moreover, the user is advised, while working on this tutorial as well as with other CFD
models, to use the “CFD ANSA GUI” document.

 Case description
Initially, the CFD dummy will be positioned inside the cabin model and adjusted to seat on the seat.
Afterwards, boundary layers will be grown from the cabin interior and the dummy and, finally, the
remaining internal volume will be meshed with solid elements.

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