Large-eddy simulation of a simplex swirl injector at supercritical conditions

Hongfa Huo, Xingjian Wang, Vigor Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Large-Eddy Simulation (LES) is potentially a powerful tool to provide enhanced understanding of the fundamental physical processes in supercritical injection, mixing and combustion. However, due to the lack of experimental data for validation, computational fluid dynamics (CFD) still plays a less important role in the initial design phase of a combustion system. The present study attempts to examine the effect of grid resolution and 3D flows on the LES of swirling liquid oxygen in a simplex swirl injector at supercritical conditions. The supercritical liquid oxygen cold flow in the inner element of an RD-0110 main injector is studied. Both axisymmetric and three-dimensional cases are considered. Results show that even with very fine grid resolution, the liquid film thickness and spreading angle still show grid dependent behaviors. In addition, the mixing rate is dramatically different for the axisymmetric and 3D results, indicating the necessity of using three-dimensional mesh to study the supercritical swirling flow. Three-dimensional flow features of liquid oxygen at realistic liquid rocket operating conditions are also presented.

Original languageEnglish
Title of host publication52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102561
Publication statusPublished - 2014
Event52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014 - National Harbor, MD, United States
Duration: 2014 Jan 132014 Jan 17

Publication series

Name52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014

Conference

Conference52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014
CountryUnited States
CityNational Harbor, MD
Period14-01-1314-01-17

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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