Fluid Dynamics & Airflow

CFD Coupling Solutions

In the complex world of thermal management, precision is everything. While Computational Fluid Dynamics (CFD) excels at simulating fluid flow, and specialized thermal tools master conduction and radiation, the most accurate results live at their intersection.

By synchronizing our industry-leading thermal solver, TAITherm, with premier CFD packages, we provide a high-fidelity simulation environment. This synergy allows engineers to capture the transient interactions between fluid convection and solid-body heat transfer, ensuring that neither the fluid physics nor the thermal response is compromised.

Transparent vehicle interior with airflow streamlines showing air movement through the cabin around seated occupants, highlighting circulation patterns.
Underside view of a vehicle with a heat transfer coefficient map, showing variations across components with a color scale from blue (low) to red (high).

How It Works

The core of the CFD Coupling process is a dynamic, bi-directional data exchange that synchronizes the fluid and solid domains. Instead of using “guessed” or static boundary conditions, the CFD solver calculates the local fluid velocities and temperatures, which are then mapped as convective heat transfer coefficients and fluid temperatures onto the TAITherm surface mesh. TAITherm then solves for the high-fidelity 3D conduction and multi-bounce radiation within the solid parts. These updated surface temperatures are fed back to the CFD solver to update the fluid boundary layer, creating a continuous loop. This ensures that the thermal response of the solids and the complex physics of the fluid flow reach a physically accurate equilibrium, particularly during transient events where temperatures change rapidly over time.

Engineering Without Compromise

By integrating ThermoAnalytics into your design workflow, you transform thermal management from a reactive fix into a competitive advantage.

Managing the extreme heat of an internal combustion engine or high-output electric motor requires more than just airflow analysis. CFD Coupling allows for the simulation of key-off soak scenarios, where airflow ceases but component temperatures continue to rise due to latent heat. This analysis is critical for preventing plastic component degradation and ensuring the longevity of sensitive electronics near heat sources.

Engine bay airflow simulation with colored streamlines illustrating how air flows through and around engine components and exits the front grille.

Predicting human thermal comfort involves a delicate balance of solar loading, vent placement, and metabolic heat. By coupling TAITherm’s Human Thermal Extension with CFD airflow, engineers can visualize how localized air velocity impacts skin temperatures and perceived comfort. This enables the design of HVAC systems that are energy-efficient while maintaining a premium passenger experience.

Cabin temperature simulation showing air distribution and temperature gradients around passengers inside a vehicle, with cooler air in blue and warmer air in green/yellow.

For electric vehicles, temperature uniformity is the “holy grail” of battery life. Coupling allows designers to simulate liquid cooling plates and convective air cooling with extreme detail. It helps in identifying hotspots within cells that a standalone CFD model might miss, allowing for the optimization of coolant flow rates and phase-change material effectiveness under rapid discharge cycles.

Battery module temperature distribution over time, showing multiple packs with localized hot spots in red and cooler regions in blue/green.

Tools for
Thermal Modeling

Different teams use our tools in different ways. These are the products most commonly used across applications.

Simulate real-world thermal behavior across complete systems with validated, multiphysics accuracy.

Discover Taitherm

Automate, orchestrate, and streamline multiphysics simulation workflows across tools and teams.

Discover CoTherm

Product Extensions

Ensure Performance, Comfort, and Stealth—Before Anything Is Built.