GPU acceleration of a petascale application for turbulent mixing at high Schmidt number using OpenMP 4.5

A Variable Turbulent Schmidt Number Formulation for Scramjet Application

In high speed engines, thorough turbulent mixing of fuel and air is required to obtain high performance and high efficiency. Thus, the ability to predict turbulent mixing is crucial in obtaining accurate numerical simulation of an engine and its performance. Current state of the art in CFD simulation is to assume both turbulent Prandtl number and Schmidt numbers to be constants. However, since ...

On filtering in the viscous-convective subrange for turbulent mixing of high Schmidt number passive scalars

Mixing at large Schmidt number in the self-similar far field of turbulent jets

We present results from an experimental investigation of turbulent transport and molecular mixing of a Sc S 1 conserved scalar in the fully developed self-similar far field of a steady, axisymmetric, momentum-driven, free turbulent jet issuing into a quiescent medium. Our experiments cover the axial range from the jet exit to 350 diameters downstream, and span the range of Reynolds numbers from...

Investigation of turbulent reacting mixing processes at high Schmidt numbers in a coaxial jet mixer using OpenFOAM

Turbulent mixing of fluids plays a dominating role in a large number of engineering devices such as combustion chambers, burners, injection systems and heat exchangers. Especially in the context of chemical applications exploration of physical mechanisms of mixing processes is extremely important to control the chemical reactions. Solution of this problem is based on detailed analysis of both h...

Scalar dissipation fronts in high-Schmidt number mixing.

Jörg Schumacher Fachbereich Physik, Philipps-Universität Marburg, D-35032 Marburg, Germany Herwig Zilken Visualization Laboratory, Zentralinstitut für angewandte Mathematik, Forschungszentrum Jülich, D-52425 Jülich, Germany Bruno Eckhardt Fachbereich Physik, Philipps-Universität Marburg, D-35032 Marburg, Germany Katepalli R. Sreenivasan International Centre for Theoretical Physics, 34014 Triest...