Large eddy simulations of isothermal confined swirling flow in an industrial gas-turbine
Large eddy simulations of isothermal confined swirling flow in an industrial gas-turbine
复制标题
DOI：
10.1016/j.ijheatfluidflow.2014.10.028
复制
发表时间：
2015-02-01
影响因子：
2.6
通讯作者：
Navarro-Martinez, S.
中科院分区：
文献类型：
--
作者：
Bulat, G.;Jones, W. P.;Navarro-Martinez, S.
本文介绍了工业燃气涡轮机燃烧室内强旋流等温流动的计算研究结果。使用大涡模拟结合动态版本的Smagorinslcy模型计算亚网格尺度应力的流场特征。网格细化研究表明，结果基本上是网格独立的。LES的结果进行了比较与广泛的一组测量和这些协议是整体良好的。该方法被证明是能够再现所观察到的旋进涡和中心涡核的平均值和均方根速度的配置文件被发现被捕获到一个很好的精度。整体流动结构被证明是几乎独立的雷诺数。(C)2014爱思唯尔公司All rights reserved.
The paper describes the results of a computational study of the strongly swirling isothermal flow in the combustion chamber of an industrial gas turbine. The flow field characteristics are computed using large eddy simulation in conjunction with a dynamic version of the Smagorinslcy model for the sub-grid-scale stresses. Grid refinement studies demonstrate that the results are essentially grid independent. The LES results are compared with an extensive set of measurements and the agreement with these is overall good. The method is shown to be capable of reproducing the observed precessing vortex and central vortex cores and the profiles of mean and rms velocities are found to be captured to a good accuracy. The overall flow structure is shown to be virtually independent of Reynolds number. (C) 2014 Elsevier Inc. All rights reserved.