In June 2023, Chen Shiyi won this title. He is a student in Zhou Peiyuan and an influential expert in fluid mechanics in the world, mainly engaged in theory of turbulence and computational fluid dynamics. 20 19 12 18 and Chen Shiyi were selected as the "70 Returnees from China in 70 Years". On September 2nd, 20 19, Chen Shiyi attended the opening ceremony of 20 19 of South University of Science and Technology in Runyang Gymnasium. He put forward four suggestions for freshmen to start a brand-new college life.
First, lay a good foundation for learning. He hopes that everyone will cherish every minute, know how to play "stupid kung fu" and sit on the "cold bench". Second, dare to challenge the limits, on the basis of inheriting the achievements of predecessors, dare to innovate, pursue Excellence, promote "source innovation" and constantly improve their "load-bearing" ability. Third, be good at choosing. The school provides students with rich and colorful resources. We should be good at discovering "our own university" and become the masters of our own learning. The fourth is to understand the society, so that study and life have a sense of direction and the times.
achievements in scientific research
Using direct numerical simulation, Chen Shiyi systematically studied the scaling law and space-time structure of turbulent velocity field, passive scalar field and other related physical quantities. Put forward the theory of mapping closure with collaborators, and give the probability density function in the turbulent system of convection diffusion and chemical reaction. Together with the collaborators, the formation mechanism of large-scale vortex in two-dimensional turbulence is put forward, and the phenomenon of energy inversion string is explained New computational fluid dynamics methods such as lattice Boltzmann method, multi-scale hybrid algorithm and constrained large eddy simulation have been developed.
In the early 1990s, Chen Shiyi broke the world record of direct numerical simulation of Reynolds number, and related research results were widely cited by the international turbulence community. The scale index of turbulence and the scale index of convection-diffusion process are accurately calculated for the first time, and the mapping closure theory in turbulence is put forward, which has become an important theoretical and numerical basis for combustion and turbulent diffusion. The formation mechanism of large-scale vortex in nature is put forward, and the energy anti-accumulation is explained.
Reference to the above content: Baidu Encyclopedia-Chen Shiyi