CBET-EPSRC: Transition and Turbulence in Compressible Boundary Layers Subjected to Concave Surface Curvature

CBET-EPSRC：受凹面曲率影响的可压缩边界层中的转变和湍流

• 批准号: EP/T01167X/1
• 负责人: Pierre Ricco
• 金额: $ 44.11万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FT01167X%2F1
• 关键词: CBET; EPSRC; Transition; Turbulence; Compressible

Compressible boundary-layer flows over concave surfaces, characterized by Gortler vortices, are ubiquitous in a large number of fluid engineering applications, such as turbine blades, high-speed aircraft wings, and nozzles in supersonic wind tunnels. The overall objectives of this proposed work are to numerically investigate spatially developing compressible boundary layers over concave surfaces, from the laminar regime up to the fully turbulent regime, and to advance both the fundamental understanding and prediction of Gortler-vortex-induced transition and spatially developing wall-bounded turbulence subject to concave surface curvature at supersonic Mach numbers. The research will be conducted jointly by UK and US investigators who perfectly complement each other. The detailed study of boundary-layer physics will also be combined with large-eddy simulations and Reynolds-averaged Navier-Stokes (RANS) to assess the performance of subgrid-scale and RANS models for transitional flows dominated by Gortler vortices. Because RANS models lack the physical basis necessary to include the effects of the upstream history on boundary-layer disturbances, the DNS data will be compared with RANS-based predictions to assess the quality of the computation of the initial turbulent region. The data can also be used to evaluate the ability of LES to reproduce the transition zone for different LES filter characteristics. In conjunction with the research effort, a variety of educational activities will be undertaken to showcase and instil the excitement of cyberphysics discovery in students at all levels, as well as to prepare a highly-trained workforce in high-speed flows and advanced cyberinfrastructure.

凹面上的可压缩边界层流动以戈特勒涡为特征，在大量流体工程应用中普遍存在，例如涡轮叶片、高速飞机机翼和超音速风洞中的喷嘴。这项工作的总体目标是对凹面上空间发展的可压缩边界层进行数值研究，从层流状态到完全湍流状态，并推进对戈特勒涡引起的转变和空间发展的基本理解和预测。超音速马赫数下受凹面曲率影响的壁界湍流。该研究将由英国和美国的研究人员联合进行，他们完全互补。边界层物理的详细研究还将与大涡模拟和雷诺平均纳维斯托克斯（RANS）相结合，以评估次网格尺度和以戈特勒涡为主的过渡流的 RANS 模型的性能。由于 RANS 模型缺乏包含上游历史对边界层扰动的影响所需的物理基础，因此将 DNS 数据与基于 RANS 的预测进行比较，以评估初始湍流区域的计算质量。该数据还可用于评估 LES 重现不同 LES 滤波器特性过渡区的能力。与研究工作相结合，将开展各种教育活动，向各级学生展示和灌输网络物理发现的兴奋感，并在高速流动和先进的网络基础设施方面培养训练有素的劳动力。

项目成果

Receptivity of compressible boundary layers over porous surfaces

多孔表面上可压缩边界层的接受性

• DOI: http://dx.10.48550/arxiv.2306.16074
• 发表时间: 2023
• 作者: Ricco P

Integral relations for the skin-friction coefficient of canonical flows

正则流表面摩擦系数的积分关系

• DOI: 10.1017/jfm.2022.444
• 发表时间: 2022-05-19
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: P. Ricco;M. Skote
• 通讯作者: M. Skote

Scaling of boundary-layer disturbances exposed to free-stream turbulence

暴露于自由流湍流的边界层扰动的缩放

• DOI: 10.1017/jfm.2023.676
• 发表时间: 2023-09-26
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: P. Ricco

Decomposition of the wall-heat flux of compressible boundary layers

可压缩边界层壁热通量的分解

• DOI: 10.1063/5.0150696
• 发表时间: 2023-06-01
• 期刊: Physics of Fluids
• 影响因子: 4.6
• 作者: P. Ricco;L. Duan
• 通讯作者: L. Duan

A comparison of the laminar streaks above a spanwise oscillating plate and a plate with spanwise wall forcing

展向振荡板和具有展向壁力的板上方层流条纹的比较

• 期刊: IUTAM-ABCM Symposium on Laminar Turbulent Transition Rio de Janeiro, 8th-12th Sept.
• 作者: Peter D. Hicks