Discipline: Mechanics
Contact number:
Address: Beijing Zhongguancun South Street 5 /n Title: Researcher
Mail box: xiaodong.chen@bit.edu.cn
Postcode: 100081

The problem of microscale multiphase flow has a wide range and diverse forms. Relevant basic research has been carried out on the typical manifestations of microscale fluids such as liquid film, liquid filament, droplet and particle, and the research methods combined with direct numerical simulation, high-speed microphotography and theoretical quantitative analysis have aimed at the interface evolution law and fluid-structure coupling effect, and the work has been carried out in the following three directions: 1. Morphological evolution of liquid film and its micro-instability mechanism;
2. Formation mechanism and interaction rule of microdroplet;
3. Micro-scale transport characteristics and fluid-structure coupling effect.
The topological theory is applied to adaptive mesh encryption to improve the computational efficiency and accuracy of multiphase interfacial flow problems with large changes in liquid film thickness, and to study the space-time evolution and instability mechanism of liquid film in liquid rocket engine atomization. The method and results have been applied in aerospace propulsion, automobile painting, and respiratory drug delivery. A microfluidic chip with a circular channel was designed and manufactured, and two capillary instability mechanisms during droplet formation were revealed, and a continuous flow method was developed to prove the universality of the mechanism. The microscale interfacial flow phenomenon in multiple droplet interactions was studied, and a theoretical model reflecting the flow pattern and product morphology was established. A number of numerical methods have been used to quantify the forces on the particles, and several inertial migration rules and fluid-structure coupling effects have been elucidated. The methods and results have been applied to reactor safety assessment and orthopedic clinical treatment. The research results have been positively evaluated, widely cited and applied by experts and scholars at home and abroad. The existing results and follow-up research will continue to play an important role in the fields of aerospace propulsion, microfluidic technology, biomedical engineering and other fields.

From September 2005 to January 2011, he obtained a joint doctoral degree in Aerospace Propulsion Theory and Engineering at the School of Astronautics, Beijing University of Aeronautics and Astronautics/Department of Mechanical Engineering, Pennsylvania State University, USA, with professors Liu Yu and Vigor Yang (Academician)
From September 2001 to June 2005, he obtained a bachelor's degree in Aircraft Power Engineering (Aerospace) at School of Astronautics, Beijing University of Aeronautics and Astronautics.

(1) January 2018 - Present, Beijing Institute of Technology, School of Astronautics, Researcher
(2) January 2016-January 2018, State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Associate Researcher
(3) June 2013-December 2015, State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Assistant Researcher
(4) January 2011 - November 2012, Postdoctoral fellow, Georgia Institute of Technology, USA, supervisor of Vigor Yang (Academician Weijia Yang)