Academic Lecture by Researcher Liu Qiusheng, Institute of Mechanics, Chinese Academy of Sciences

Lecture Title: Research on Space Microgravity Fluid Physics

Speaker: Researcher Qiusheng Liu, Institute of Mechanics, Chinese Academy of Sciences

Lecture time: 2:30 pm, November 1, 2019

Lecture Venue: Conference Room 303, School of Energy and Power Engineering

Lecture content: In the development of new technologies in aerospace and ground industries, new requirements for space thermal equipment and fluid management have been put forward. This report starts from the fluid physics problems in related engineering practice, and focuses on the special laws of heat and mass coupling and the mechanism of flow instability in the process of interfacial fluid transportation under the conditions of space micro (low) gravity and in foundation applications. It mainly includes the following three aspects: the influence of gravity changes on the phase change heat transfer characteristics of fluids and the stability of fluid interfaces and the non-equilibrium thermal effects of complex interface fluids; the study of spatial variable acceleration (variable Bond number) on the gas-liquid shape and position distribution and fluid weight The influence of the positioning dynamic process and the special law of Raleigh-Taylor instability of the space fluid interface; innovative research on the micro (variable) gravity falling tower experiment and the new technology of space experiment.

Introduction of the presenter：

Qiusheng Liu received his Ph.D. of Science from the Marseille School of Fluid Power, University of Provence, France in 1994. From 1994 to 1995, he was a guest researcher at the International Laboratory of Fluid Mechanics, University of Madrid, Spain. In 1997, the Chinese Academy of Sciences "Introduced Outstanding Foreign Talents" was selected. Currently a researcher and doctoral supervisor of the Institute of Mechanics of the Chinese Academy of Sciences, a distinguished chief professor of the University of Chinese Academy of Sciences, a member of the International Astronautical Federation (IAF) Committee for Space Processing and Microgravity Applications, a director of the Chinese Society for Space Sciences, and ESA International Advanced Research on Two-Phase Systems for Space and Earth Applications Scientific committee member of the organization (ITT Topic Team), scientific committee member of the International Marangoni Association (IMA), Chinese head of the Asian Microgravity Science Conference, ISPS scientific committee member of the International Space Physics Science Conference, head of the "Lightness Project" of the Chinese Academy of Sciences Science Pilot Program Microgravity Fluid Physics And other academic positions. One of the founders of the Asian Microgravity Science Conference, and the chairman of the 8th, 9th and 10th Asian Microgravity Science Conference and the 5th-9th National Microgravity Science Conference.

Long engaged in microgravity fluid physics and interface phenomena, space phase change heat transfer, convection stability, space on-orbit fluid management, and space microgravity experimental technology. Main research fields and directions: fluid mechanics, fluid stability and its complex fluid interface phenomena. Participated in the theoretical research work of the European Space Agency IML-2 Space Fluid Experimental Research Program. Participated in my country's first (SJ-5 small satellite) space fluid loading experiment in 1996, participated in my country's SJ-10 retractable satellite microgravity fluid scientific experiment in 2016, and participated in my country's first cargo spacecraft "Tianzhou-1" space science in 2017 experiment. He has successively undertaken the National Climbing Preliminary Project, the major, key, and general projects of the National Natural Science Foundation of China, the Sino-Russian International Cooperation Fund project, the European Space Agency (ESA) ELIPS-4 MAP international cooperation project, and the Chinese Academy of Sciences knowledge innovation project. A research project on microgravity fluid physics, etc. Completed more than 10 cooperative research projects commissioned by China Aerospace Science and Technology Group, China Astronaut Training Center and other units. He is currently the chief designer of the "two-phase system scientific experiment cabinet" project of my country's manned space station engineering application system and the academic leader of space two-phase system scientific research.