报告题目：

Transport, mixing and agglomeration of particles

in turbulent flows

报告人:                   Prof. Michael W Reeks

School of Mechanical and Systems Engineering, Newcastle University,

Newcastle upon Tyne, NE1 7RU, UK

时间：2014年6月5日(周四)   10:00—11:00

地点：中科院力学所主楼344会议室

报告摘要：

This seminar is about methods and approaches that have been used to simulate and model the transport, mixing and agglomeration of small particles in a flowing turbulent gas. The transported particles because of their inertia are assumed not to follow the motion of the large scales of the turbulence and or the motion of the small dissipating scales of the turbulence. I will show how both these behaviours can be represented by a PDF approach analogous to that used in Classical Kinetic Theory. For large scale dispersion the focus will be on transport in simple generic flows like statistically stationary homogeneous isotropic turbulence and simple shear flows. Special consideration will be given to the transport and deposition of particles in turbulent boundary layers. For small scale transport the focus will be on how the the small scales of turbulence together with the particle inertial response enhances collision processes like particle agglomeration. In this case the importance of segregation and the formation of caustics, singularities and random uncorrelated motion will be highlighted and discussed.

Keywords: inertial particles, turbulence, pdf approach, segregation, dispersion

报告人简介：

英国纽卡斯尔大学教授，帝国理工学院客座教授； 英国物理学会 Fellow，英国气溶胶协会创建人之一，美国机械工程师学会ASME Fellow；是J. Flow Turb. Combust.杂志编辑；获得过ASME的Freemans Scholar Award（2010）；主要研究领域为两相流数值模拟、弥散粒子流动、气溶胶、颗粒科学与技术。