ROTATION/CURVATURE CORRECTION IN AERODYNAMIC PREDICTION OF AXISYMMETRIC BODIES AT HIGH ANGLES OF ATTACK

B.K. Park; J. Park; D. Kim; H. Yang; S. Lee; J.S. Park

doi:10.6112/kscfe.2025.30.3.001

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Original Article

ROTATION/CURVATURE CORRECTION IN AERODYNAMIC PREDICTION OF AXISYMMETRIC BODIES AT HIGH ANGLES OF ATTACK 높은 받음각에서 축대칭 물체의 공력 해석을 위한 회전/곡률 보정

30 September 2025. pp. 1-19

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Abstract

This paper present an enhanced computational analysis of tangent-ogive cylinder projectile at high angles of attack, incorporating a rotation/curvature(RC) correction to the k-ω SST RANS turbulence model. The empirical constants in Menter’s RC correction are optimized using Bayesian optimization to improve surface pressure predictions, particularly on the leeward side. These constants are trained on Lamont’s experimental data for a projectile with a nose fineness ratio of 3.5 at an angle of attack of 20° and a Reynolds number of 4.0×10⁶ based on diameter. The improved correction is then validated on Tinling’s experimental data, which involves a slightly shorter nose with fineness ratio of 3.0, and shows better agreement with the measured surface pressure distribution.

Keywords

RANS Turbulence model

Axisymmetric body

Rotation and curvature correction

Optimization

키워드

난류 모델

축대칭 형상

회전/곡률 보정

최적화

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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 : 30
No :3
Pages :1-19
Received Date : 2024-12-16
Revised Date : 2025-07-07
Accepted Date : 2025-08-04
DOI :https://doi.org/10.6112/kscfe.2025.30.3.001

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

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