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Solver Help
More resources for AcuSolve and ultraFluidX solvers.
ultraFluidX User Guide
View detailed information regarding the features, functionality, and simulation methods available in ultraFluidX.
Use ultraFluidX
Check system requirements and launch ultraFluidX.
Additional Command Line Options
Starting ultraFluidX with the parameter -h (ultraFluidX -h) exposes additional command line options and special ultraFluidX functions without license checkout in the terminal.

Welcome
What's New
View new features for HyperMesh CFD 2024.1.
Get Started
Learn the basics and discover the workspace.
Onboarding Resources
Discover HyperMesh CFD functionality with interactive tutorials and community resources.
Solution Layers
Solution-centric workflows allow you to traverse through modeling environments using a dedicated UI layer.
Manage Files and Data
Create, open, import, and save models.
Convert
Use the Convert tool to convert entire models between data types.
Geometry Modeling
Manage CAD, FE, and 2D parametric sketch geometry.
Meshing
Generate surface/volume mesh by defining mesh controls, or interactively create and edit 2D surface mesh.
Setup
Prepare your model and run the simulation.
Post-Processing
Post-process the simulation results by creating visualizations and measurements.
Automation
Automate simulation processes with templates and utility scripts.
Design Exploration
Once the baseline model is prepared, you can define morph volumes, morph geometry, create design shapes and run DOE studies. These tool work for both AcuSolve and ultraFluidX-based workflows.
Solver Help
More resources for AcuSolve and ultraFluidX solvers.
- AcuSolve Help
  Click here to access AcuSolve online help.
- ultraFluidX User Guide
  View detailed information regarding the features, functionality, and simulation methods available in ultraFluidX.
  - Overview
    ultraFluidX is a simulation tool for the prediction of the aerodynamic properties of passenger and heavy-duty vehicles, as well as for the evaluation of building and environmental aerodynamics.
  - Use ultraFluidX
    Check system requirements and launch ultraFluidX.
    - Additional Command Line Options
      Starting ultraFluidX with the parameter -h (ultraFluidX -h) exposes additional command line options and special ultraFluidX functions without license checkout in the terminal.
    - Workflow and Output
      After ultraFluidX has been launched, it will read in the tessellated surface mesh, as well as the simulation parameters, and then start to generate the volume mesh based on the specified refinement zones.
    - Multi-Node Usage
      ultraFluidX can generally be used on an arbitrary number of compute nodes.
  - Simulation Parameters
    Available parameters for defining simulations in ultraFluidX.
  - Expert Parameters
    Additional expert parameters can be used to fine-tune simulations.
  - Post-Processing Tools
    For certain aeroacoustics applications, such as fan noise, HVAC noise and train community noise, you need to evaluate flow-induced noise levels at microphones located far away from the turbulent regions simulated in ultraFluidX.

Additional Command Line Options

Starting ultraFluidX with the parameter -h (ultraFluidX -h) exposes additional command line options and special ultraFluidX functions without license checkout in the terminal.

The special functions also work without using MPI.

A helpful option is the specification of a separate output folder or path via the option -o, where a location, such as output, will automatically be created if it will be a new folder in the current directory:

mpirun -np 5 ultraFluidX case.xml –o output

If an output path is not specified, ultraFluidX uses the current run directory for the output by default.