|Table of Contents|

Numerical analysis on flow characteristics of outer nozzle of bipropellant pressure-swirl injector(PDF)

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

Issue:
2018年04期
Page:
10-15
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical analysis on flow characteristics of outer nozzle of bipropellant pressure-swirl injector
Author(s):
SONG Daliang;  LING Qiancheng;  ZHANG Rongjun
Xi'an Aerospace Propulsion Institute, Xi'an 710100, China
Keywords:
CFX software;  VOF method;  numerical simulation;  swirl injector;  two-phase flow
PACS:
V430-34
DOI:
-
Abstract:
The pressure-swirl atomizer is widely used in rocket engine. The previous research rarely involved the flow characteristics of outer nozzle of the bipropellant pressure-swirl injector. The flow characteristics of the outer nozzle are researched with numerical simulation method. In allusion to the structure of a typical bipropellant centrifugal nozzle, the CFX software for numerical simulation is used to research the flow characteristics of the outer nozzle, and get the typical flow field structure of the nozzle. The effectiveness of the numerical simulation method was verified by comparing the numerical results with the test results. The influence of the inner nozzle on the flow characteristics of the outer nozzle is studied to obtain the effect of the inner nozzle diameter and the retracted length on flow coefficient and atomization cone angle of the outer nozzle. The numerical simulation results can provide more detailed description of nozzle flow field features and nozzle flow characteristics. The numerical simulation method can guide the nozzle design process more accurately.

References:

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Last Update: 1900-01-01