GPPS Hong Kong23: Technical Keynote Speaker
Stall Margin Improvement on Axial Compressors: Integrated Design of Axial Slot Casing Treatment and Blades
Casing treatment has been widely studied to extend the stall margin of axial flow compressors. However, a large amount of research has demonstrated that the addition of casing treatment would cause efficiency penalty, which greatly restricted the engineering application of casing treatment in modern aeroengine compressors. The revelation of coupling mechanism and integrated design criteria of casing treatment and blades is a key to fully tap the potential of the stability-enhancing capability of casing treatments on the premise of no efficiency penalty. Recent progress of casing treatment in the open literature will be first summarized. The latest research results on stability mechanism and optimization design of casing treatment made in China will be then introduced. Based on analysis of the integrated design optimization results, the design criteria of axial slot casing treatment and blades are summarized and used as guidance in the design process of tip-critical low-speed and transonic axial compressors. The final result shows the prospects of integrated design in stall margin and efficiency improvement.
Dr. Du is a member of Youth Innovation Promotion Association of Chinese Academy of Sciences (CAS). In 2009, she studied for one year as a visiting scholar in Department of Aerospace and Mechanical Engineering, University of Notre Dame, USA. In 2010, she got her Ph.D. degree from Institute of Engineering Thermophysics Chinese Academy of Sciences. From 2014 to 2016, funded by Humboldt Research Fellowship, she served as a Postdoctoral Researchers at Institute of Turbomachinery and Fluid-dynamics, Leibniz University Hannover, Germany. Professor Joerg R. Seume was her host Professor.
Her research ranges over the topics of unsteady flows, rotating stall, flow control methods in compressors and fans. She is the member of the editorial committee of Journal of Thermal Science, and serves as peer reviewer of international periodicals ASME Journal of Engineering for Gas Turbines and Power, Aerospace Science and Technology and Journal of Mechanical Science and Technology.