|Table of Contents|

Simulation study on gaseous oxygen/methane double injectors with coaxial shear(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2018年03期
Page:
68-75
Research Field:
测控与试验
Publishing date:

Info

Title:
Simulation study on gaseous oxygen/methane double injectors with coaxial shear
Author(s):
HAH Shutao1;  LIN Jie2;  YU Nanjia1;  ZHANG Yang1
1.School of Astronautics, Beihang University, Beijing 100191, China; 2. Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
gaseous oxygen/gaseous methane;  coaxial shear;  double injectors;  combustion;  turbulent model
PACS:
V430-34
DOI:
-
Abstract:
The effects of different injector spacing on the combustion flow field were compared through the simulation study on gaseous oxygen/-methane double injectors with coaxial shear. The k-ε and k-ω SST turbulent models were used for each calculation condition. The simulation results show that the larger injector spacing will increase the heat load of the central region in the injector plane and the front wall surface of the combustor, while the smaller injector spacing can cause the reaction zone near the axis move forward. under the working condition of small injector spacing, the wall temperature of the middle-rear combustor is higher. The k-ω SST model can better reflect the status of recirculation zone, but the temperature of combustor wall and central region in the injector plane, as well as the concentration of H2O component near the combustor axis, are all lower than those of the k-ε model.

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Last Update: 2018-06-30