SCHEDULE: NOV 12-18, 2011

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Adaptive Simulation of Turbulent Flow Past a Full Car Model

SESSION: State of the Practice - Applications

EVENT TYPE: State of the Practice

TIME: 11:00AM - 11:30AM

SESSION CHAIR: Julia Mullen

AUTHOR(S):Niclas Jansson, Johan Hoffman, Murtazo Nazarov

ROOM:TCC 202

ABSTRACT:
The massive computational cost for resolving all turbulent scales makes a direct numerical simulation of the underlying Navier-Stokes equations impossible in most engineering applications. We present recent advances in parallel adaptive finite element methodology that enable us to efficiently compute time resolved approximations for complex geometries with error control. In this paper we present a LES simulation of turbulent flow past a full car model, where we adaptively refine the unstructured mesh to minimize the error in drag prediction. The simulation was partly carried out on the new Cray XE6 at PDC/KTH where the solver shows near optimal strong and weak scaling for the entire adaptive process.

Chair/Author Details:

Julia Mullen (Chair) - MIT Lincoln Laboratory

Niclas Jansson - KTH Royal Institute of Technology, School of Computer Science and Communication, Department of Numerical Analysis

Johan Hoffman - KTH Royal Institute of Technology, School of Computer Science and Communication, Department of Numerical Analysis

Murtazo Nazarov - KTH Royal Institute of Technology, School of Computer Science and Communication, Department of Numerical Analysis

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The full paper can be found in the ACM Digital Library