电气工程及自动化学院
通知公告

美国普渡大学董素川教授报告通知

2018-07-24 14:57:44  发布人:孙雷

    应电气学院林连雷副教授的邀请,受引智项目资助,美国普渡大学董素川教授将于近日来访我校并做报告,欢迎感兴趣的师生参加。

 

董素川教授简介:

董素川教授是计算流体动力学(Computational Fluid Dynamics,CFD)方面的专家,他的研究方向集中在CFD领域,主要工作是开发新颖的物理/数学模型和高效的数值计算技术,以及应用这些技术来探索、理解和控制与流体相关的现象。他目前的研究兴趣包括高阶数值方法、两相及多相流体、湍流、以及流结构的相互作用。董教授已经在期刊上发表了40多篇论文,在国际会议上发表了超过70篇论文。他的研究工作受到美国国家科学基金会(NSF)、美国能源部(DOE)等部门资助。

 

 

报告安排如下:

1. Direct Numerical Simulation of Taylor-Couette Turbulence and Spiral Turbulence

报告时间:2018年8月1日 上午 9:00-11:30

报告地点:科学园2A栋504室

A three-dimensional direct numerical simulation (DNS) study of the turbulent

Taylor-Couette flow in a range of moderate Reynolds numbers, and in particular in the so-called spiral turbulence regime, will be presented. The simulation is based on a high-order accurate spectral element technique, which can deal with flow domains with arbitrarily complicated geometry.  We investigate the effects of the vortices and other flow structures on the dynamics and statistics of the flow.

 

2. Wall-Bounded Two-Phase and Multiphase Flows: Phase Field Methods and Simulations

报告时间:2018年8月1日 下午 2:00-5:00 

报告地点:科学园2A栋504室

 

Wall-bounded two-phase and multiphase flows involve fluid interfaces and moving contact lines and contac-angle effects. In this talk we present an efficient method for simulating this class of problems based on a phase-field approach. How to deal with the multitude of contact angles on the wall in the presence of multiple fluids components will be discussed. Extensive numerical simulations will be presented to demonstrate the physical accuracy of the method.

 

3. Reduction Consistency in Modeling and Simulating Multiphase Flows of N (N>=2) Immiscible Incompressible Fluids

报告时间:2018年8月2日 上午 9:00-11:30

报告地点:科学园2A栋504室

 

We explore the effects of reduction consistency and thermodynamic consistency on the modeling and simulations of multiphase flows consisting of N (N>=2) immiscible incompressible fluids. By reduction consistency we refer to the property that if only a set of M (1<=M<=N-1) fluids are present in the system then the N-phase formulation should  exactly reduce to that of the corresponding M-phase system. By thermodynamic consistency we refer to the property that the formulation should honor the thermodynamic principles. A fully reduction-consistent and thermodynamically-consistent formulation for N-phase systems will be presented. We also show that many other possible forms of reduction-consistent and thermodynamically-consistent formulations exist.  Extensive numerical simulations will be presented to demonstrate that reduction consistency is critical to capturing the flow physics of N-phase systems correctly and accurately.

 

 

4. Bluff-Body Turbulence and Vortex Induced Vibrations: Simulation and Control

报告时间:2018年8月2日 下午 2:00-5:00

报告地点:土木工程学院402室

 

Bluff-body turbulence is an important class of problems in fluid dynamics. A canonical bluff-body wake, the flow past a long circular cylinder, will be studied via three-dimensional direct numerical simulations based on high-order spectral elements. An effective technique for suppressing the Karman vortex street and the vortex-induced vibrations of the cylinder will be presented.