Hypergravity experiments on multiphase media evolution  

作　　者：CHEN YunMin TANG Yao LING DaoSheng WANG YuBing 

机构地区：[1]Center for Hypergravity Experiment and Interdisciplinary Research,Zhejiang University,Hangzhou 310058,China [2]Key Laboratory of Soft Soils and Geoenvironmental Engineering(Ministry of Education),Zhejiang University,Hangzhou 310058,China

出　　处：《Science China(Technological Sciences)》2022年第12期2791-2808,共18页中国科学（技术科学英文版）

基　　金：supported by the Basic Science Center Program for Multiphase Media Evolution in Hypergravity of the National Natural Science Foundation of China (Grant No. 51988101);the National Major Scientific and Technological Infrastructure-Centrifugal Hypergravity and Interdisciplinary Experimental Facility (CHIEF);Financial support from the Chinese Program of Introducing Talents of Discipline to University (the 111 Project, Grant No. B18047)。

摘　　要：The gravitational field affects the evolution of multiphase media, such as rocks, soil, and alloy melts. Hypergravity increases the body force of matter, enhancing the driving force of the relative motion between substances with different densities and accelerating the evolution of multiphase media. Hypergravity experiments provide a new approach to exploring the motion of multiphase media and solving engineering problems. Hypergravity experiments have been conducted in different disciplines,such as materials science, geological science, and geotechnical engineering. However, the knowledge barriers between various research fields have caused the development of centrifuges/inflight devices and theoretical research on the mechanisms of matter in motion in hypergravity to lag behind the application of hypergravity experiments, limiting the progress in these experiments.This article systematically summarizes and proposes the fundamentals of hypergravity experiments, while the scientific challenge of the nonlinear hypergravity effect induced by high hypergravity on multiphase media evolution is clarified. Evaluation criteria are proposed for the noninertial frame effects of the centrifugal hypergravity field. The development of the high-centrifugal acceleration, large-capacity, and long-beam centrifuges are determined as the future research direction. Representative cases are used to demonstrate the effectiveness and great potential of the hypergravity experiments for the solidification of alloy melts and physical modeling. Challenges in the experimental methodology are also clarified. This paper reviews the fundamentals and applications of hypergravity experiments in various disciplines, pointing out the research direction of hypergravity experiments on multiphase media evolution.

关 键 词：hypergravity experiments multiphase media CENTRIFUGE solidification of alloy melts physical modeling 

分 类 号：O314[理学—一般力学与力学基础]