Horizontal channel flow
Title:
Transport effects in particle laden, horizontal channel flows
Head:
Prof. Dr.-Ing. M. Sommerfeld
Realizer:
Dipl.-Ing. J. Kussin
Keywords:
particle laden flow, wall collisions, grid turbulence, phase-Doppler anemometer, mathematical modelling
Description:
The project has the goal further to develop and to validate models for the numerical calculation of two-phase flows using an Euler/Lagrange approach to obtain reliable calculations of particle laden gas flows in channels, pipes, cyclones etc. The preliminary investigations showed that the turbulent transport, particle-wall interactions and particle-particle collisions, which have a considerable influence even for small mass loads, are the essential physical effects that determine the particle motion in closed turbulent flows. On the other hand, the particles affect the turbulence. Detailled experiments using a relative simple flow configuration of a particle laden, horizontal channel (cref. Figures) flow have to be carried out to get a better understanding of the several physical effects. In addition to the experimental investigations numerical calculations basing on the Euler/Lagrange approach have to be carried out to understand the complex, combined transport effects in this channel flow better. A Reynolds-stress turbulence model, which have to be expanded to two-phase flows, should be used to comprehend the nonisotropic and nonhomogeneous turbulence structure better. Besides, the already implemented models for the consideration of the collisions between the particles and the rough wall and for the simulation of the particle-particle collisions should be validated and improved using the experimental investigations.
Channel
Status report
Horizontaler Kanal_Zwischenbericht.pdf
(736 KB) vom 19.01.2011
Final report
Horizontaler Kanal_Abschlussbericht.pdf
(1.8 MB) vom 19.01.2011