Journal of Applied Mechanical Engineering

Numerical simulation of compressible reactive flows with high-order schemes

4^th International Conference and Exhibition on Mechanical & Aerospace Engineering

October 03-04, 2016 Orlando, USA

Bing Wang, Wei Wei and Zhao Xin Ren

Tsinghua University, China

Posters & Accepted Abstracts: J Appl Mech Eng

Abstract:

Recently, numerical simulations have been widely employed to investigate the compressible flows, since it is difficult to carry out the experimental measurements, especially in the reactive high-speed flows. Considered the high compressibility as well as discontinuities in the flows, the shock wave capturing schemes will be necessary for resolving the compressible flows, and moreover the careful treatments of chemical reaction should be taken for proceeding numerical simulation stable and fast. The present authors have tried to establish a high-resolution numerical solver for computing the compressible reactive flows. This presentation will introduce and compare the numerical procedures acquired in this solver for computing the fluxes using different hybrid WENO schemes, dealing with chemical stiffness problems, and tracing droplets and their interaction with the compressible fluids. As examples, the TGV problem considering the passive scalar mixing, the interaction of shock wave with flame interface in premixed combustion, the spatially developing reactive mixing layer flows taken gas-phase hydrogen and liquid-phase n-decane as fuel respectively are simulated and further discussed in details. Many important characteristics of flow structure, interface instabilities, flame structure, and ignition/extinction are analyzed under the supersonic flow condition.

Biography :

Email: wbing@mail.tsinghua.edu.cn