Turbulence Models
CFD models for predicting turbulent flow behavior
Most Used in Industry
These two turbulence models account for nearly 90% of industrial CFD simulations.
k-ε Model
A proven choice for high-Reynolds-number flows. Fast, robust, and widely validated across industrial applications.
Best for
Refrigerators, ovens, air conditioners, and general household appliances.
k-ω SST
An industry standard that combines accuracy with reliability. Delivers excellent near-wall resolution and predicts flow separation in complex geometries.
Best for
Washing machines, dishwashers, cooktops, vacuum cleaners (curvature correction enabled), and appliances with intricate geometries or strong wall interactions.
Complete Model Reference
Fundamental Models
| Inviscid Flow | Frictionless flow - Conceptual design and high-speed applications |
| Laminar | Low Reynolds number flows - Perfect for Re < 2,300 applications |
RANS Models (Reynolds-Averaged Navier-Stokes)
| Spalart-Allmaras | One-equation model - Aerospace legacy, boundary layer specialist |
| k-ε Standard | A proven choice for high-Reynolds-number flows - Fast, robust, widely validated |
| k-ω Standard | Near-wall specialist - Good for low Re and wall-bounded flows |
| k-ω SST | Industry standard - Best balance of accuracy and robustness |
| Reynolds Stress Model | Research grade - Complex 3D flows, rotating machinery |
Transition Models
| k-kL-ω Transition | Three-equation transition - Specialized for automatic transition prediction |
| Transition SST | Most advanced transition - Industry standard for transition-critical flows |
Advanced Models
| SAS (Scale-Adaptive Simulation) | Hybrid RANS-LES - Unsteady large-scale turbulent structures |
| DES (Detached Eddy Simulation) | Hybrid RANS-LES - Massive separation, external aerodynamics |
| LES (Large Eddy Simulation) | High-fidelity unsteady - Research applications, complex physics |
Model Comparison for Home Appliances
| Model | Equations | Speed | Accuracy | Best Appliance Use |
|---|---|---|---|---|
| k-ε | 2 | Fast | Good | Refrigerators, ovens, HVAC |
| k-ω SST | 2 | Medium | Very Good | Washing machines, complex geometries |
| Laminar | 1 (NS) | Fastest | Perfect* | Microwave cavities (Re < 2,300) |
| Reynolds Stress | 7 | Slow | Excellent | Research, rotating drum analysis |
| Transition SST | 4 | Slow | Excellent | Precision applications |