Impact Factor:2.66
DOI number:10.3390/aerospace9110685
Journal:Aerospace
Key Words:hypersonic airbreathing propulsion system; external and internal flow; quasi-onedimensional model; multifidelity simulation method
Abstract: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
Indexed by:Journal paper
Discipline:Engineering
Document Type:J
Volume:9
Issue:685
Translation or Not:no
Date of Publication:2022-11-03
Included Journals:SCI、SCIE
Co-author:张锦昇,匡正
Correspondence Author:袁化成,Yuan Hua Cheng
Date of Publication:2022-11-03