High-fidelity simulation of combustion processes in liquid rocket engines

Xingjian Wang, Vigor Yang

研究成果: Paper同行評審

摘要

The combustion characteristics of oxygen and kerosene in liquid rocket engines are investigated using large eddy simulation. These engines operate at pressure levels higher than the critical pressures of propellants, i.e., supercritical conditions. A theoretical and numerical framework along with real-fluid thermodynamic and transport properties is implemented. The turbulence/chemistry interaction is treated using a laminar flamelet approach. The resultant scheme provides high-fidelity information of flame fields that are extremely challenging to capture in experiments. Two types of swirl-related injectors are considered, bi-swirl and jet-swirl. Oxygen and kerosene are both tangentially introduced into the injector for the former, while oxygen is axially injected and kerosene is tangentially introduced for the latter. The flow and flame structures are presented. The flame anchors at the injector post in the recess region for both cases, and is further stabilized by the recirculation zone immediately downstream of the injector. The kerosene film flows along the injector surface because of the swirl-induced centrifugal force, and provides effective thermal protection to the surface against the heat flux in the flame zone. The dynamic responses of the combustion filed is currently underway to explore the stability characteristics.

原文English
出版狀態Published - 2017
事件10th U.S. National Combustion Meeting - College Park, United States
持續時間: 2017 四月 232017 四月 26

Conference

Conference10th U.S. National Combustion Meeting
國家/地區United States
城市College Park
期間17-04-2317-04-26

All Science Journal Classification (ASJC) codes

  • 化學工程 (全部)
  • 物理與理論化學
  • 機械工業

指紋

深入研究「High-fidelity simulation of combustion processes in liquid rocket engines」主題。共同形成了獨特的指紋。

引用此