Application

Automotive

Automotive

CFD has found applications in the modeling of various automotive systems involving fluid flow, heat transfer, chemical kinetics, multiphase flows, and fluid-structure interaction.

ESI-CFD offers a full suite of integrated software tools for the rapid prototyping of engineering concepts, design modifications, and performing parametric studies.

Some of the areas of applications shown here include:

- HVAC/Climate Control
- Intake/Exhaust Manifold
- External Aerodynamics
- Underhood engine cooling
- Catalytic Converters
- Engine
- Grid Generation

The capabilities of the software package includes for the Automotive Industry:

- Multi-block structured grids with many-to-one coupling enabling local mesh refinement.
- Rotating coordinates, moving meshes and walls for pistons, valves and other moving objects.
- Internal solid objects, concentrated and distributed flow resistances such as solid/perforated plates, blockages and porous media.
- Variety of turbulence models: k-e, k-w, RNG, two-layer and more.
- Multi-step stiff chemical kinetics for modeling combustion and catalytic surface chemistry.
- Exhaust emissions analysis and catalytic converters.
- Two-phase droplet/particle "spray" injection. Collision, coalescence, evaporation, drop dispersion due to turbulence and combustion, particulate melting / solidification.
- Multi-media, multi-block, conjugate heat transfer for analysis of engine coolant circuit.
- Radiation heat transfer using discrete ordinate method.
- A mixed element unstructured grid code

CFD-ACE+ uses Eulerian-Eulerian two-phase flow model with boiling heat transfer simulation in evaporator plates. A mixed EE/EL model is used for humid air flow through curved fins accounting for vapor condensation and flow blocking

Airflow and thermal analysis of underhood Velocity Vector at a Cutting Plane (z = 0.45 m) engine cooling using "fan" model to simulate the radiator fan.

Flow and Emissions Chemistry in Catalytic Converters

Particle traces showing flow in a 4-stroke engine at two different stroke angles.

Particle traces showing flow in a 4-stroke engine at two different stroke angles.