PERFORMANCE ANALYSIS OF A RECTANGULAR SUPERSONIC AIR INTAKE BASED ON A TWO-DIMENSIONAL APPROXIMATION WITH NUMERICAL VALIDATION

H. Lee; C.W. Jeong; J.S. Park

doi:10.6112/kscfe.2026.31.2.001

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2026 Vol.31, Issue 2 Next Page

Original Article

PERFORMANCE ANALYSIS OF A RECTANGULAR SUPERSONIC AIR INTAKE BASED ON A TWO-DIMENSIONAL APPROXIMATION WITH NUMERICAL VALIDATION 사각단면 초음속 공기 흡입구의 2차원 근사 성능 예측 및 수치적 검증

30 June 2026. pp. 1-20

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Abstract

In this paper, a Python-based code was developed to predict the approximate performance of two-dimensional supersonic air inlets with a rectangular cross section based on compressible flow theory. The code efficiently evaluates the aerodynamic characteristics of the external compression region of multi-ramp supersonic inlets by computing the flow properties in each compression section using oblique and normal shock relations derived from user-defined geometric parameters, and automatically generates inlet configurations that satisfy a target total pressure recovery. Since the theoretical approach relies on inviscid assumptions, it may overestimate inlet performance under practical operating conditions. To address this limitation, Reynolds-Averaged Navier–Stokes simulations were conducted for selected optimal configurations to validate the preliminary design results and to quantify the degradation of total pressure recovery due to viscous effects. In addition, three-dimensional effects and the effectiveness of boundary-layer bleed devices were examined to further assess their influence on inlet performance.

Keywords

Air intake

Supersonic flow

Approximate performance analysis

Computational fluid dynamics

키워드

공기 흡입구

초음속 유동

근사 성능 예측

전산유체역학

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Information

Publisher :Korean Society for Computational Fluids Engineering
Publisher(Ko) :한국전산유체공학회
Journal Title :Journal of Computational Fluids Engineering
Journal Title(Ko) :한국전산유체공학회지
Volume : 31
No :2
Pages :1-20
Received Date : 2025-12-31
Revised Date : 2026-05-20
Accepted Date : 2026-06-01
DOI :https://doi.org/10.6112/kscfe.2026.31.2.001

Journal of Computational Fluids Engineering ISSN:1598-6071(Print) 3022-6252(Online) 한국전산유체공학회지

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