December 5, 2016

Behavioral model for helicopter engine compartment

Industry: Aerospace | Product: pSeven Core | Company: Airbus Helicopters

Objective

An aerothermal model of engine integrated into helicopter engine bay is considered as a part of complex workflow involving several industrial partners. To reduce the overall simulation time, the physical model should be substituted with an accurate behavioral (surrogate) model. This should be done using the database of already performed simulations with several internal and external parameters (heat transfer coefficient, altitude, engine power, external air temperature).

Challenges

• The engine has a complex profile, and the surrogate model must predict several response functions at 750 values of the horizontal position.
• In contrast, there are only a few values of the internal and external parameters for which simulations have been performed.

This makes the problem highly anisotropic. Standard surrogate modeling techniques are inefficient here.

Solution

Use the unique Tensor product of approximations feature of pSeven Core GTApprox, which was developed to deal with anisotropic data.

Benefit

The original slow model has been replaced with a much faster, but nevertheless quite accurate behavioral model.