固体火箭技术2013，Vol.36Issue(3)：310-317,8.DOI:10.7673/j.issn.1006-2793.2013.03.005
RBCC发动机海平面零速引射模态流场数值模拟
Numerical simulations on a rocket-based combined cycle engine in ejector mode under sea-level static conditions
石磊 1何国强 1秦飞1
作者信息
- 1. 西北工业大学燃烧、热结构与内流场重点实验室,西安710072
- 折叠
摘要
Abstract
Numerical simulations have been done on a strut-based rocket-based combined cycle (RBCC) engine operated in the ejector mode under sea-level static conditions,which composed of a dual-mode ramjet combustor matched with an appropriate inlet and exhaust system.Then the flow field characteristics were analyzed in detail.Consequently,the computational grid resolution and boundary condition settings has a vital effect on the rationality and reliability of the numerical results.Moreover,the aerodynamic demonstration seem particular under the take-off operation.Flow separations appear on the leeward sides near the inlet cowl,meanwhile,the aerodynamic configuration of the inlet is no longer consistent with its physical one.Accordingly,the air capture and its flow path are changed,which effect the engine performance finally.Further,the adoption of integration CFD (Computational Fluid Dynamic) methods is certified to be significant and necessary during investigations of the ejector mode of RBCC engines.关键词
RBCC发动机/引射模态/零速/流场/数值模拟Key words
RBCC engine / ejector mode/ sea-level static / flow field/ numerical simulation分类
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石磊,何国强,秦飞..RBCC发动机海平面零速引射模态流场数值模拟[J].固体火箭技术,2013,36(3):310-317,8.
