Teaching

Study Course

Process Engineering
Chemical and Energy Engineering
Process Safety and Environmental Engineering
Business Management for Process and Energy Engineering

Module

volunteer lecture: - Multiphase Flow Fundamentals

Objectives

The lecture aims at giving an introduction to multiphase flows frequently found in industry, environment and daily life. The main focus will be related to dispersed multiphase flows where particles are distributed in a flow system. Here the main relevant transport mechanisms occurring on the scale of the particles will be introduced. Hence the students will learn about the complexity of multiphase flows and obtain some guidelines about process lay-out.

Content

The lecture begins with an introduction of the features of multiphase flows and their characterization. Then the main focus will be related to dispersed multiphase flows where the dispersed phase consists of solid particles, droplets or bubbles which are distributed in the carrier phase (i.e. gas or liquid). For each of these types of dispersed multiphase flows, such as gas-particles systems, sprays and bubbly flows, the relevant transport processes will be introduced, such as for example:

Fluid forces on particles
Turbulent transport of particles
Inter-particle collisions and their outcomes, such as bouncing and coalescence
Agglomeration of particles
Wall interaction of particles and possible deposition
Atomization of liquids
Droplet heat and mass transfer

Following that some typical processes with dispersed multiphase flows will be introduced, reviewing the main design criteria. Finally also the numerical methods for calculating dispersed multiphase flows will be summarized.

Teaching

Lecture and Tutorial
The lecture will be offered only in English

Prerequisites

Good knowledge in fluid mechanics and particle technology.

Workload

Lectures and tutorials
2 hours per week lectures including tutorials
The lectures will be hold in the form of block-seminars every second week

Literature

Crowe, C.T., Schwarzkopf, J.D., Sommerfeld, M. and Tsuji, Y.: Multiphase Flows with Droplets and Particles. 2nd Edition, CRC Press, Boca Raton, U.S.A. (2012), ISBN 978-1-4398-4050-4 (507 pages)

Examination/Credits

written or oral Examination; 4 CP

Responsible lecturer

Herr Prof. Dr.-Ing. habil. Martin Sommerfeld