报告人：何力教授

Speaker: Prof.Li He

主持人：王丁喜教授

Host:Prof. Dingxi Wang

时间：2019年06月27日（星期四）上午10：00-12：00

Time: 10:00am-12:00am, June27, 2019

地点：长安校区动力与能源学院大楼225会议室

Location: Conference room 225, School of Power and Energy

主题：气动热多尺度数值仿真

高压涡轮内的流动有着宽广的时间和空间尺度，比如缓慢的热传导和快速的流体对流，通道内的大尺度宏观流动和气膜冷却的小尺度流动。在传热和冷却高保真数值仿真中，这些不同的时空尺度都需要得到解析。本次讲座将介绍高压涡轮气动热多尺度数值仿真的进展。

Topic:Multi-discipline Multi-component and Multi-scale Interactions: challenges and Opportunities for Turbomachinery CFD

Turbomachinery CFD development is judged by how well it can serve blading design and analysis in terms of enhancing physical understanding and aero-performance predictability. Flow in an isolated component at a design condition is relatively readily understandable and adequately predicable (though still subject touncertainties in treating turbulence). Challenges one often faces arise from complex interactions among components of a working machine and among disciplines in the design process,impacting on the overall performance, reliability and durability. These problems are often not aerodynamics per se, and are far more difficult to predict and to understand, presenting challenges as well as opportunities.

This talk will start with a brief historical perspective of the turbomachinery CFD, to underline the importance and relevance of components and discipline interactions. Some recent developments in relation to the interactions of the present interest (Multi-blade rows; Aerodynamics-Aeroelasicity; Aerodynamics-Heat transfer; Main flow path- Micro surface structure) will be discussed.

Speaker’s Biography

Prof. Li He is the Chair Professor of Computational Aerothermal Engineeringat the department of Engineering Science of Oxford University.He isalsothe Oxford Co-director of the Centre for Doctoral Training (CDT) in Gas Turbine Aerodynamics, jointly established with Cambridge and Loughborough universities.Prof. LiHewasthe head of Osney Lab(2008-2011) and the acting director of Rolls-Royce University Technology Center in Heat Transfer and Aerodynamics (2008-2010).

His main research interest has been in Computational Fluid Dynamics with emphasis on unsteady aerodynamic/aero-elastic and heat transfer phenomena in turbomachinery. He has directed research projects in unsteady flows and aeroelasticity and consulted for several major gas turbine/aeroengine and steam turbine companies in Europe, US and Asia.

He has been a review organiser and committee member for several international conferences. External editorial services include:

- Guest Editor, International Journal of CFD (special issue on Fourier methods);

- Associate Editor, ASME Journal of Turbomachinery;

- Associate Editor, the Aeronautical Journal.

He is Fellow of American Society of Mechanical Engineers (ASME) and Fellow of Royal Aeronautical Society(RAeS).