Engineering Workflow Overview

The LeaRes Engineering Workflow enables you to perform advanced computational fluid dynamics (CFD) simulations on medical devices, vascular geometries, and other fluid systems. This module provides a complete pipeline from geometry import to results visualization, powered by the high-performance MOEBIUS solver using the Lattice Boltzmann Method.

What You Can Achieve

With the Engineering Workflow, you can:

• Analyze Fluid Flow: Simulate blood flow through vessels, airflow in respiratory devices, or generic fluid through complex geometries
• Track Scalar Transport: Model species concentration, drug delivery, and aerosol transport via advection–diffusion–reaction
• Resolve Transitional Flow: capture transitional regimes by refining the grid (no subgrid turbulence model is enabled)

The Complete Workflow

The engineering workflow follows a logical sequence:

1. Geometry Import

Import your 3D geometry from STL files, VTP (VTK PolyData) files, or directly from OnShape CAD platform. LeaRes supports complex geometries with multiple surfaces and internal structures.

2. Configuration

Define the physical properties and conditions:

• Zone Definition: Mark regions of your geometry (inlets, outlets, walls)
• Material Properties: Assign fluid properties (density, viscosity) and solid properties
• Boundary Conditions: Specify how fluid enters, exits, and interacts with walls

3. Simulation

Launch high-performance simulations:

• Configure mesh resolution and solver parameters
• Run on a single GPU by default, or in parallel with MPI on the CPU build
• Monitor progress in real-time via WebSocket updates
• Stop a running simulation at any time; runs also stop themselves when the convergence monitor detects stationarity

4. Analysis

Visualize and analyze results:

• View velocity fields with Surface LIC visualization
• Examine pressure distributions
• Analyze temperature and concentration fields
• Animate through time steps
• Export data for further analysis

Prerequisites

Before starting the Engineering Workflow, ensure you have:

• 3D Geometry: CAD models exported as STL or VTP files, access to OnShape, or an anatomy segmented in the medical workspace
• Physical Parameters: the operating conditions of your case — fluid choice, inlet velocity and profile, outlet gauge pressure
• LeaRes Account with the Engineering module enabled, and a positive credit balance — a launch with a zero balance is rejected
• Ownership of the project, or admin/collaborator access

Credits are charged for simulation runs in proportion to the compute they consume, and your tier caps daily GPU minutes and concurrent jobs. Demo accounts are limited to the two coarsest grid resolutions and a daily simulation cap. See Account, Tiers, and Credits for the full picture.

Next Steps

Continue to Engineering Workspace Setup.