AcuSolve Validation Manual

Collection of AcuSolve simulation cases for which results are compared against analytical or experimental results to demonstrate the accuracy of AcuSolve results.

The accuracy of the solutions presented in this document validates the capability of AcuSolve to simulate complex flow for a variety of problems. The goal is to provide accurate results for each validation case. Grid sensitivity studies have been performed, however, the simulation settings have not been optimized to minimize computation time. Instead, the cases presented are intended to portray settings that show a good trade off between accuracy and compute time.

Supporting database files (*.acs and *.hm for AcuConsole and HyperMesh, respectively) are available for the validation cases in a compressed .zip archive,, in the \model_files\validation directory of your AcuSolve installation. Copy to a working directory, then expand it for access to individual database files. These can be used to recreate the results for a particular validation case or can be examined to see the AcuSolve settings in detail.

Each validation contains information in the following sections:
Problem Description
A description of the geometry, physical properties, and specific AcuSolve modeling strategy.
AcuSolve Results
Results obtained from the AcuSolve simulation compared against theoretical or experimental results.
A summary of the validation case.
Simulation Settings
AcuSolve settings for the specific validation case and the name and location of the associated database file.
Sources of theoretical equations or experimental results.

AcuSolve Results Presentation

Results for each validation case are presented with one or more contour plots that represent the converged CFD solution. A consistent set of contour colormapping has been adopted to represent each scalar quantity. The following image illustrates the colormap conventions for contours of velocity magnitude, pressure, temperature and vorticity magnitude.

Figure 1.

Recreating the Results

You can recreate the AcuSolve results by using the database files provided. The general process to recreate the results is as follows:
  1. Start AcuConsole or HyperMesh and open the database file (*.acs or *.hm) for a particular validation case.
  2. Launch AcuSolve to generate a solution.
  3. Post-process results with AcuProbe, AcuTrans or AcuFieldView.

Typographical Conventions

Simulation settings are presented so that you can recreate the simulation case. The presentation of the simulation settings reflects the AcuSolve commands that are modified from default values. Labels in the GUI are indicated with highlighting, for example, Problem Description. Tree items that can be renamed are presented in normal font. Settings selected from a list are indicated after a dash. Settings that are entered directly into a field are indicated by courier font.

As an example, the following would indicate that the Global settings tree item was expanded, the Problem Description panel was opened, the Analysis type was set to Steady State, and the Turbulence equation set to Laminar.
Problem Description
Analysis type
Steady State
Turbulence equation
The following would indicate that Global in the tree was expanded, Material Model was also expanded, Gas is a branch that can be renamed and the material properties panel is opened, and the Density is entered as 1.808 with the units of kg/m3.
Material Model
Material Type - Fluid
Density 1.808 kg/m3