Speaker： Prof. Piotr Wolanski

Institute for Heat Engineering, Warsaw University of Technology, Warsaw, Poland

 

Abstracts:

Advantages of application of detonation combustion to jet propulsion are based on the significant pressure increase, which occurs during detonative combustion and thus increasing engine efficiency. Unlike PDE engine, continuously rotatingdetonation offer more compact engine with less noise and vibration.  Research carried out at the Institute of Aviation and the Warsaw University of Technology is focused on evaluation of the conditions at which rotating detonation is propagating in cylindrical channels for different fuel-air mixtures. Hydrogen-air as well as acetylene-air mixtures were successfully tested.

Additionally, numerical 3-D simulations of mixture formation as well as simulations of detonation propagation in such channels will be presented. The simulations are based on the classical Euler equations describing the motion of a reacting inviscid gas. The model is capable of simulating detailed chemistry; however, simple single or two-step mechanisms will be presented. The model is implemented in an in-house code CFD-ZSL. The code works on structural grids. The Euler equations and the grids can be defined in the Cartesian co-ordinate system or in a cylindrical system. Several structural grids may be combined together in order to simulate relatively complex geometries, similar to those used in the experiments.

Possible applications of continuous rotating detonation in turbojet, ramjet and rocket engines will be presented.

 

About the Speaker:

Date and place of birth: 16 August, 1942, Milowka, POLAND

Education:

·M.S. (Mech. E.), The Technical University of Warsaw, 1966

·Ph. D. (Mech. E.), The Technical University of Warsaw, 1971

·Dr. hab. (Habilitation) (Combustion), The Technical University of Warsaw, 1979.

·Professor, since 1989,

Employment:

Institute for Heat Engineering, Warsaw University of Technology, Warsaw, Poland

Aviation Institute, Warsaw, Poland

Research Interest:

Mechanics, Aeronautics (Propulsion, Internal Combustion Engines, Combustion, Combustion in microgravity, Explosions, Geophysics)

 

主持人：王健平  教授

时  间：6月22日（周五）下午2:00

地  点：方正大厦301会议室

 

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