|Table of Contents|

Experimental on air flow in flame tube of cannular combustor(PDF)

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

Issue:
2019年04期
Page:
85-90
Research Field:
测控与试验
Publishing date:

Info

Title:
Experimental on air flow in flame tube of cannular combustor
Author(s):
CHEN Fan; WU Yue; ZHANG Hengxin; DU Changni
(Xi’an Aerospace Propulsion Institute,Xi’an 710100,China)
Keywords:
cannular combustor;  flame tube;  flow characteristics;  comparative experiment
PACS:
V434.3
DOI:
-
Abstract:
In order to ensure the uniformity of flow distribution in the cannular combustor,the relative deviation δ of the single flame tube flow is required to be within±1.5%.For this reason,a mathematical model for the comparison test of the air flow characteristics in flame tube was established by using simulated pressure ratio method and similarity theory.The error transfer analysis of the data processing model shows that there is an interval in the existing model that cannot determine the true characteristics of the flame tube,and the inlet air pressure deviation Δp1 of the flame tube is a key factor causing the δ error.Furthermore,an air flow test system based on two-stage diffusion and rectifier gas collection device was designed,and the air flow experiments were carried out for a group of 16 flame tubes under the inlet pressure p1 of 20 kPa,40 kPa,60 kPa and 80 kPa,respectively.The results show that the inlet pressure deviation of flame tube is less than±0.05 kPa,the relative value of inlet pressure pulsation is less that 0.25%,and the relative error of product characteristic parameter C is not more than±0.01%,which could determine the consistency of flow characteristics for the flame tube.

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Last Update: 2019-08-31