类增材制造通道流动的粗糙度分辨大涡模拟

IF 1.9 3区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Turbomachinery-Transactions of the Asme Pub Date : 2023-05-22 DOI:10.1115/1.4062245

Serge Meynet, Alexis Barge, Vincent Moureau, Guillaume Balarac, Ghislain Lartigue, Abdellah Hadjadj

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引用次数: 0

摘要

在过去的十年中，增材制造(AM)的进步为优化热交换器铺平了道路，其颠覆性设计将在很大程度上依赖于预测数值模拟。然而，由于AM引起的典型粗糙度，目前用于定常和非定常三维Navier-Stokes模拟的壁面模型没有考虑到这一特性。为了开发和评估新型增材制造壁面模型，建立了高保真的粗糙度分辨大涡模拟数据库。本文描述了用于进行RRLES的数值设置和方法，从表面生成到后处理。此外，还研究了代表两种印刷方向的三种不同情况以及流向和展向各向同性情况。三种情况下粗糙度分布相同，但有效斜率ES差异很大，分析了不同雷诺数下该参数对湍流和换热的影响。

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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Roughness-Resolved Large-Eddy Simulation of Additive Manufacturing-Like Channel Flows

Abstract In the last decade, progresses in additive manufacturing (AM) have paved the way for optimized heat exchangers whose disruptive design will heavily rely on predictive numerical simulations. However, due to typical roughness induced by AM, current wall models used in steady and unsteady 3D Navier–Stokes simulations do not take into account such characteristics. For the development and assessment of novel wall models for AM, a high-fidelity roughness-resolved large-eddy simulation (RRLES) database is built. This article describes the numerical setup and the methodology used for conducting RRLES, from surface generation to postprocessing. In addition, three different cases representing two printing directions plus a streamwise and spanwise isotropic case are investigated. While the roughness distributions are the same in the three cases, the effective slope (ES) is very different, and the impact of this parameter on turbulence and heat transfer is analyzed at different Reynolds numbers.

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来源期刊

Journal of Turbomachinery-Transactions of the Asme 工程技术-工程：机械

CiteScore

4.70

自引率

11.80%

发文量

168

审稿时长

9 months

期刊介绍： The Journal of Turbomachinery publishes archival-quality, peer-reviewed technical papers that advance the state-of-the-art of turbomachinery technology related to gas turbine engines. The broad scope of the subject matter includes the fluid dynamics, heat transfer, and aeromechanics technology associated with the design, analysis, modeling, testing, and performance of turbomachinery. Emphasis is placed on gas-path technologies associated with axial compressors, centrifugal compressors, and turbines. Topics: Aerodynamic design, analysis, and test of compressor and turbine blading; Compressor stall, surge, and operability issues; Heat transfer phenomena and film cooling design, analysis, and testing in turbines; Aeromechanical instabilities; Computational fluid dynamics (CFD) applied to turbomachinery, boundary layer development, measurement techniques, and cavity and leaking flows.