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Pre-processing
Create a nanoFluidX model using SimLab.
Drivetrain Oiling
Set up a drivetrain simulation.
Particles
Generate a uniformly distributed particles for the nanoFluidX solver.

Welcome
What's New
View new features for nanoFluidX 2025.
Get Started
Tutorials
Discover nanoFluidX functionality with interactive tutorials.
Pre-processing
Create a nanoFluidX model using SimLab.
- Recommended Settings and Customizations for SimLab
  Define settings for a nanoFluidX and SimLab connection.
- Drivetrain Oiling
  Set up a drivetrain simulation.
  - Material
    In the drivetrain oiling solution, fluid material parameters can be defined either manually or by selecting from a wide range of pre-defined materials in the SimLab built-in material database.
  - Boundary Conditions
  - Measurements
  - Particles
    Generate a uniformly distributed particles for the nanoFluidX solver.
- Vehicle Wading Solution
  Set up a vehicle wading simulation.
- Water Management
- Tank Sloshing Solution
  Set up a tank sloshing simulation.
- Export and Data Check
  Before exporting a model, the setup can be verified and checked for errors using the Data Check tool.
Command Reference
nanoFluidX commands and parameters with examples.
Post-processing
Theory Manual
Physics and theory for nanoFluidX.
Validation Manual
Error and Warning Messages
This glossary contains generic messages generated by nanoFluidX, their likely causes, and possible methods to resolve the related issues.
Frequently Asked Questions
This section provides quick responses to typical and frequently asked questions regarding nanoFluidX.
Bibliography
References used throughout the nanoFluidX manual.

View All Altair HyperWorks Help

Particles

Generate a uniformly distributed particles for the nanoFluidX solver.

Analysis > Particles

A model typically has solids that are stationary (outer container for example), solids that have assigned motion (gears, shafts, bearings etc.) and fluids phases: liquid or gas inside the container. To reduce the total number of particles and thus solver performance, the closed container inner volume - wetted surface, is identified and a thick region is created with minimum thickness of 3 particle layers.

The moving parts are modelled as hollow solids. The fluid regions are defined by a node contained in the fluid region. The fluid - fluid interface (mostly liquid - gas interface) is defined by the plane and the software automatically creates particles for both the fluid regions (liquid and gas).

Create Particles in SimLab

For particle creation, it is required to select the node inside the fluid regions. All solids that have attached motion will be automatically selected in the Moving Solids selection menu.

User can change the number of discretization layers that in Advanced options.