ACU-T: 2300 Atmospheric Boundary Layer Problem – Flow Over Building
Prerequisites
Prior to starting this tutorial, you should have already run through the introductory HyperWorks tutorial, ACU-T: 1000 HyperWorks UI Introduction. To run this simulation, you will need access to a licensed version of HyperMesh and AcuSolve.
Prior to running through this tutorial, copy HyperMesh_tutorial_inputs.zip from <Altair_installation_directory>\hwcfdsolvers\acusolve\win64\model_files\tutorials\AcuSolve to a local directory. Extract ACU-T2300_Building.hm from HyperMesh_tutorial_inputs.zip.
Since the HyperMesh database (.hm file) contains meshed geometry, this tutorial does not include steps related to geometry import and mesh generation.
Problem Description
The problem to be addressed in this tutorial is shown schematically in Figure 1. As an example, this problem shows the capability of Atmospheric Boundary Layer modelling in AcuSolve.
In this tutorial, you will simulate the air flow over a building with a ground roughness of 0.03. In this case, User Defined Atmospheric Roughness Type is considered.
Open the HyperMesh Model Database
Set the General Simulation Parameters
Set Up Boundary Conditions and Material Model Parameters
In this step, you will define the Boundary Conditions (BCs) for the problem and assign material properties to the fluid volume.
Set Up Material Model Parameters
Set Up Fluid Volume Material
Set Up Boundary Conditions
Set Up Nodal Initial Conditions
Compute the Solution
In this step, you will launch AcuSolve directly from HyperMesh and compute the solution.
Run AcuSolve
Post-Process the Results with AcuFieldView
Click on the AcuFieldView icon to launch the AcuFieldView dialog.
Load Model and Results
Coordinate the Surface for Showing Velocity Magnitude on the Y Plane
Coordinate the Surface for Showing Velocity Vectors on the Y Plane
Coordinate the Surface for Showing Velocity Magnitude on the Z Plane
Coordinate the Surface for Showing Velocity Vectors on the Z Plane
Summary
In this tutorial, you worked through a basic workflow to set up a CFD model, carry out a CFD simulation, then post-process the results using HyperWorks products, namely AcuSolve, HyperMesh and AcuFieldView. You started by importing the model in HyperMesh. Then, you defined the simulation parameters and launched AcuSolve directly from within HyperMesh. Upon completion of solution by AcuSolve, you used AcuFieldView to post-process the results and create contour plots.