|Table of Contents|

Simulated analysis on nozzle dynamic characteristics based on high-order WENO scheme(PDF)

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

Issue:
2015年04期
Page:
29-36
Research Field:
研究与设计
Publishing date:

Info

Title:
Simulated analysis on nozzle dynamic characteristics based on high-order WENO scheme
Author(s):
LIANG Junlong1;  ZHANG Guitian1;  QIN Yanping2
1. State Key Laboratory of Combustion, Thermal Structure and Inner Flow Field, Northwestern Polytechnical University, Xi’an 710072, China; 2. Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
nozzle;  high-order finite volume method;  WENO scheme;  dynamic characteristic;  shock wave detection
PACS:
V434-34
DOI:
-
Abstract:
Dynamic characteristic analysis of the nozzle is a foundation to conduct the high-quality controller design, parameter optimization and control law verification. To investigate the dynamic characteristics, the finite volume Roe type high-accuracy weighted essentially non-oscillatory (WENO) scheme combined with shock wave detection function is adopted to accurately capture the shock wave location and establish the simulation program of one-dimensional dynamic characteristics for the nozzle based on the one- equations. The correctness of simulation program and shock wave detection function was verified by contrast of the theoretical analytical solution. Under disturbances from inlet total temperature and total pressure, the step response features of thrust and pressure at inlet/outlet of the nozzle were obtained, and the effect of each disturbance factor on the thrust response characteristics was analyzed. Furthermore, the change rule of the shock wave motion and the thrust is analyzed when the shock wave exits at the divergent section, which is valuable to design the thrust controller.

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