|Table of Contents|

Numerical simulation of mixing flow in the head of powder fuel ramjet(PDF)

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

Issue:
2020年05期
Page:
35-41
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical simulation of mixing flow in the head of powder fuel ramjet
Author(s):
REN Mengfei1; XI Wenxiong1; LUO Shibin1; DENG Zhe2; ZHANG Zhengze2
(1.School of Aeronautics and Astronautics, Central South University, Changsha 410083, China; 2.Xi’an Modern Chemistry Research Institute, Xi’an 710065, China)
Keywords:
powder ramjet engine;  afterburner;  head structure;  mixing efficiency;  pressure loss
PACS:
TJ55
DOI:
-
Abstract:
In order to analyze the effect of the head structure on the internal mixing flow of the powder fuel ramjet engine, based on the configuration of a typical powder fuel ramjet, a square head and around head of the engine with double lower side intake were designed.The effect of the structural design of the square head and the circular head on the flow field in the afterburner chamber was analyzed and compared by the 3D numerical simulation method of component transport.The results demonstrate that the square head only forms a weak recirculation zone at the head of the afterburning chamber, and the pressure recovery coefficient of each section decreases gradually along the flow direction.However, the round head structure forms a symmetric strong backflow area at the symmetric plane, making the flow of the afterburning chamber more beneficial to the powder injection, and the mixing efficiency and pressure recovery coefficient of each section are larger than the square head.

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Last Update: 2020-10-20