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Flow Simulation · Lesson 1: First analysis with FloXpress

The FloXpress assumptions, the four setup steps and reading flow trajectories.

Lesson goal

Run a first internal flow analysis and interpret the resulting trajectories.

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3 videos

✎

1 exercise

Beginner

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Prerequisite: Able to model a simple part

1. Watch the videos

Dassault Systèmes videos hosted on MySolidWorks: they open in a new tab and a free account is enough. Watch them in order.

Getting Started with FloXpressVideo 1▶Getting Started with FloXpressThe FloXpress assumptions and its interface for a first flow analysis (CFD).↗ Setting up a FloXpress StudyVideo 2▶Setting up a FloXpress StudyThe four pages of the study: geometry check, fluid, inlet and outlet.↗ FloXpress - Solving the Model and Interpreting ResultsVideo 3▶FloXpress - Solving the Model and Interpreting ResultsRun the calculation, read the trajectories and reuse the study on another configuration.↗

2. Key takeaways

1

FloXpress is for a first pass: it calculates the flow in the closed volume of a model, with simplified assumptions.

2

Setup follows four pages: geometry check, fluid, inlet and outlet.

3

Flow trajectories show the path of the fluid and reveal dead zones or accelerations.

4

The same setup can be reused on another configuration: handy for comparing two variants.

Tip

Create two configurations of your part (for example two passage diameters) and run FloXpress on each: comparing the trajectories tells you more than a single result.

3. Do the exercise

On a simple fitting or manifold with one inlet and one outlet:

  • close the openings and run the geometry check
  • set water as the fluid, a flow rate at the inlet and the pressure at the outlet
  • display the trajectories and locate the area of maximum velocity
✓To check: The geometry check finds a closed fluid volume, and the trajectories run from the inlet to the outlet.

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