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学术报告九:Large Eddy Simulation of Labyrinth Seals and Rib Shapes for Internal Cooling Passages

来源:数学与统计学院     作者:     时间:2017/5/12 9:51:10  0次

数学与统计学院学术报告[2017] 09号

(高水平大学建设系列报告079号)

讲座题目:Large Eddy Simulation of Labyrinth Seals and Rib Shapes for Internal Cooling Passages

讲座人:戴玉双 博后 研究助理  (英国剑桥大学)

讲座时间:2017年5月17日 10:00-11:00                 

讲座地点:科技楼514                                                            

报告内容:

Labyrinth seals are extensively used in gas turbines to control leakage between components. In this research, the effects of geometry on the sealing performance are investigated. To obtain the best sealing performance, an investigation is undertaken into the possibility of optimising labyrinth seal planforms using a genetic algorithm (GA). Large Eddy Simulation (LES) is used for its ability to accurately capture the complex unsteady behavior of this type of flow. Three hundred LES calculations are carried out. By making use of a large number of processors, an optimum geometry can be achieved within design cycle timescales. The optimised design shows a leakage reduction of about 27.6\% compared to the baseline geometry. An immersed boundary method (IBM) is used with LES to generate complex geometries on a background Cartesian grid. The GA is inherently parallel, and this enables the exploitation of the reliability and accuracy benefit of LES is demonstrated.

报告人简历:

戴玉双(1990-),女,英国剑桥大学计算流体力学专业博士毕业,,英国剑桥大学博后。2012年-至今,已发表或准备发表在“AIAA”、“ Computers and Fluids”、“ ASME Journal of Fluid Engineering”、“International Journal of Heat and Mass Transfer”、《四川建筑科学研究》等国内外期刊或会议的学术论文近10篇。课题方向: ①§Large Eddy Simulation of Turbine Blade Internal Cooling;②§Mesh Generation (IBM);③§Design Optimisation in Turbomachinery。

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数学与统计学院

2017-05-11


 




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