A comparative study of URANS, DDES and DES simulations of Jetstream 31 aircraft near the compressibility limit

IF 2.8 Q2 MECHANICS

Journal of Applied and Computational Mechanics Pub Date : 2021-01-01 DOI:10.32973/jcam.2021.009

Hrishabh Chaudhary, Nicolas Ledos, L. Könözsy

引用次数: 0

Abstract

This work presents a comparative study of Unsteady Reynolds–Averaged Navier–Stokes (URANS), Detached Eddy Simulations (DES) and Delayed Detached Eddy Simulations (DDES) turbulence modeling approaches by performing numerical investigation with the ANSYS-FLUENT software package on a full-scale model of the Jetstream 31 aircraft. The lift and drag coefficients obtained from different models are compared with flight test data, wind tunnel data and theoretical estimates. The different turbulence models are also compared with each other on the basis of pressure coefficient distributions and velocity fluctuations along various lines and sections of the aircraft. For the mesh and the conditions presented in this study, the DDES Spalart–Allmaras model gives the best overall results.

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射流31飞机压缩极限附近URANS、DDES和DES仿真的比较研究

本文通过使用ANSYS-FLUENT软件包对喷气流31飞机全尺寸模型进行数值研究，对非定常雷诺平均纳维斯托克斯(URANS)、分离涡模拟(DES)和延迟分离涡模拟(DDES)湍流建模方法进行了比较研究。将不同模型得到的升力和阻力系数与飞行试验数据、风洞数据和理论估计进行了比较。根据压力系数的分布和飞机各剖面的速度波动，对不同的湍流模型进行了比较。对于本研究提供的网格和条件，DDES Spalart-Allmaras模型给出了最好的整体结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied and Computational Mechanics MECHANICS-

CiteScore

6.90

自引率

3.20%

发文量

审稿时长

8 weeks

期刊介绍： The Journal of Applied and Computational Mechanics aims to provide a medium for dissemination of innovative and consequential papers on mathematical and computational methods in theoretical as well as applied mechanics. Manuscripts submitted to the journal undergo a blind peer reviewing procedure conducted by the editorial board. The Journal of Applied and Computational Mechanics devoted to the all fields of solid and fluid mechanics. The journal also welcomes papers that are related to the recent technological advances such as biomechanics, electro-mechanics, advanced materials and micor/nano-mechanics. The scope of the journal includes, but is not limited to, the following topic areas: -Theoretical and experimental mechanics- Dynamic systems & control- Nonlinear dynamics and chaos- Boundary layer theory- Turbulence and hydrodynamic stability- Multiphase flows- Heat and mass transfer- Micro/Nano-mechanics- Structural optimization- Smart materials and applications- Composite materials- Hydro- and aerodynamics- Fluid-structure interaction- Gas dynamics