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影响因子：2.66

DOI码：10.3390/aerospace9110685

发表刊物：Aerospace

关键字：hypersonic airbreathing propulsion system; external and internal flow; quasi-onedimensional model; multifidelity simulation method

摘要：As hypersonic vehicles are highly integrated, a multifidelity simulation method based on
a commercial solver is developed to reduce simulation time for such vehicles and their propulsion
systems. This method is characterized by high-level fidelity numerical analysis of external flow and
low-level fidelity numerical analysis of internal flow. The external flow of a propulsion system is
solved by RANS equations. The internal flow is modeled by a quasi-one-dimensional equation. The
interaction between external and internal flow is governed by a CFD solver through a user-defined
function (UDF). The static pressure distribution acquired from the multifidelity simulation method is
in agreement with the experimental data, indicating that this simulation method can be used to study
the flow physics of hypersonic propulsion systems at a reasonable cost. From a design perspective,
the results indicate that the horizontal force increases with the fuel equivalence ratio, and the thrust
balance is realized at ' = 0.35. The positive net thrust is maintained throughout the flight regime
from Ma 4 to Ma 7, whether the combustor operates in ramjet or scramjet mode

论文类型：期刊论文

学科门类：工学

文献类型：J

卷号：9

期号：685

是否译文：否

发表时间：2022-11-03

收录刊物：SCI、SCIE

合写作者：张锦昇,匡正

通讯作者：袁化成,袁化成