Christer Fureby

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-258

Large Eddy Simulation (LES) has rapidly developed into a powerful computational methodology for fluid
dynamic studies, between Reynolds Averaged Navier Stokes (RANS) and Direct Numerical Simulation
(DNS) in both accuracy and cost. High-speed combustion applications, such as ducted rockets, ramjets,
scramjet, dual-mode ramjets, and rotating detonation engines, are very interesting propulsion systems,
but also challenging to analyze and develop. Up to about a decade ago we were limited to use experimental facilities, equipped with advanced conventional and non-intrusive diagnostic tools to study such
flows. The main drawback besides the cost of such studies is the limited field-of-view, and the challenges understanding the whole flow. With the increase in computational capacity seen over the last decade,
we now have the possibility of using RANS, LES and DNS to analyze these flows in detail. RANS has been around for a long time, it’s advantages and disadvantages being well known while DNS is only suited
for canonical flows due to its very high computational cost. LES on the other hand, have the potential
to be used together with experiments to provide detailed insight into the flow physics, and at the same
time facilitating various design aspects associated with the flow physics. Here, the concept of LES for
high-speed combustion is reviewed, and examples of LES results are discussed.

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In Categories: 1.Events, HiSST 2022, Propulsion Systems and Components
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