An Innovate Approach to Race Track Simulations

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The thermal prediction of vehicle body environments is of high importance in the design, optimization and management of vehicle power systems. Within the pre-development phase of a vehicle's production process, it is important to understand and determine regions of high thermally induced stress within the exhaust system itself and surrounding underbody components. This early stage of prediction allows engineers to rapidly modify the design or alter component material characteristics without incurring significant costs related to experimental testing.

Today's current industrial standard of thermal simulation for a complete vehicle packages including body architecture, underbody and exhaust components are limited to steady state conditions and moderate transient conditions. Many previous attempts have been proposed in literature by industrial experts, to simulate time-dependent behavior of dynamic vehicle conditions (particularly in the case of thermal soak). However, some of these proposals have required a dependency on strong computing power, complete 3D exhaust simulations and fluid-solid coupling arrangements.

This presentation will describe a new methodology which utilizes the conventional means of simulation (3D/1D coupling) whilst integrating intelligent boundary conditions to accelerate the turn-over times for comprehensive transient simulations. New meshing techniques in combination with the integrated use of a higher accuracy exhaust prediction tool will demonstrate a higher focus on efficiency without the standard compromises in accuracy. This innovative methodology will be debuting at the STAR Global Conference 2013.

Author Name: 
Kristian Hähndel
Author Company: 
BMW Group