新 MEXICO 实验的计算调查与验证

IF 1.5 Q4 ENERGY & FUELS

Wind Engineering Pub Date : 2024-02-14 DOI:10.1177/0309524x241229169

Mujahid Shaik, Balaji Subramanian

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引用次数: 0

摘要

报告对在轴向流条件下运行的 New MEXICO 试验案例进行了计算研究。考虑了三种风速情况（10、15、24 m/s），对应于涡轮机在 425.1 rpm 转速下运行时的三种不同转速比（10、6.67、4.17）。ANSYS CFX 2021R1 采用单参考框架 (SRF) 和多参考框架 (MRF) 方法进行模拟。流场是通过求解与 SST k-ω 湍流模型和 Gamma-Theta 过渡模型耦合的非稳态雷诺平均纳维-斯托克斯（uRANS）方程计算得出的。验证工作包括将 CFD 预测的积分量、静压分布和载荷与相应的实验值进行比较，结果表明在所有三种风速下两者的一致性都相当好。总体而言，SRF 的尾流预测（假设）稍好，而 MRF 的积分量、静压和载荷预测更接近测量值。这项研究证明了基于 uRANS 的三维 CFD 计算在风机空气动力学研究中的实用性。

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Computational investigation and validation of new MEXICO experiment

A computational investigation of New MEXICO test cases operating under axial flow conditions is reported. Three wind speed cases (10, 15, 24 m/s) corresponding to three different tip speed ratios (10, 6.67, 4.17) when the turbine operates at 425.1 rpm were considered. ANSYS CFX 2021R1 was employed to perform simulations using Single Reference Frame (SRF) and Multiple Reference Frame (MRF) approaches. The flow field is computed by solving unsteady Reynolds Averaged Navier-Stokes (uRANS) equations coupled with SST k-ω turbulence model and Gamma-Theta transition model. Validation involved comparing CFD-predicted integral quantities, static pressure distributions, and loads with corresponding experimental values demonstrating reasonably good agreement at all three wind speeds. Overall, SRF exhibited slightly better wake predictions (hypothetical), while MRF predictions were closer to measurements for integral quantities, static pressure and loads. This study demonstrates the utility of uRANS-based 3D CFD computations in wind turbine aerodynamics studies.

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来源期刊

Wind Engineering ENERGY & FUELS-

CiteScore

4.00

自引率

13.30%

发文量

期刊介绍： Having been in continuous publication since 1977, Wind Engineering is the oldest and most authoritative English language journal devoted entirely to the technology of wind energy. Under the direction of a distinguished editor and editorial board, Wind Engineering appears bimonthly with fully refereed contributions from active figures in the field, book notices, and summaries of the more interesting papers from other sources. Papers are published in Wind Engineering on: the aerodynamics of rotors and blades; machine subsystems and components; design; test programmes; power generation and transmission; measuring and recording techniques; installations and applications; and economic, environmental and legal aspects.