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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
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.
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