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Numerical study of 3-D unsteady flow field in hydrogen fuel turbine of LRE(PDF)

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

Issue:
2014年03期
Page:
38-45
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical study of 3-D unsteady flow field in hydrogen fuel turbine of LRE
Author(s):
WANG Zhao-hui;  YE Xiao-ming
Beijing Aerospace Propulsion Institute, Beijing 100076, China
Keywords:
-
PACS:
V434+.211-34
DOI:
-
Abstract:
In combination with actual engineering project, three-dimensional unsteady flow field of two-stage axial hydrogen fuel turbine in liquid rocket engine (LRE) was simulated numerically. Taking rotor-stator interaction, unsteady blade force and torque as research objects, an in-depth analysis of unsteady flow field within the turbine was performed. Moreover, the performance characteristics of the turbine were calculated and compared with experimental results. The result indicates that the calculation method used in this paper can properly simulate the unsteady flow phenomena inside of the turbine, fluctuation amplitudes of blade force and torque on blade surface of 1st rotor approach 15.78% and 17.31% respectively. As for the efficiency, there is a certain difference between unsteady and steady simulation results. At off-design state, unsteady result is more accurate than steady one.

References:

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