Basset history force for spherical particle colliding with wall
1.
SYSNO ASEP
0329721
Document Type
C - Proceedings Paper (int. conf.)
R&D Document Type
Conference Paper
Title
Basset history force for spherical particle colliding with wall
Author(s)
Lukerchenko, Nikolay (UH-J)
Source Title
MMTT-22: Matematicheskije Metody v Nauke i Technologijach, Sekcija 3. - Pskov : PGPI, 2009
- ISBN 978-5-91116-096-5
Pages
s. 15-17
Number of pages
3 s.
Action
Mezhdunarodnajanauchnaja konferencija Matematicheskije metody v nauke i technologijach /22./
Event date
25.05.2009-30.05.2009
VEvent location
Pskov
Country
RU - Russian Federation
Event type
WRD
Language
eng - English
Country
RU - Russian Federation
Keywords
multiphase flow ; Basset force ; particle-wall collision
Subject RIV
BK - Fluid Dynamics
R&D Projects
GA103/09/1718 GA ČR - Czech Science Foundation (CSF)
CEZ
AV0Z20600510 - UH-J (2005-2011)
Annotation
In the most works the calculation of the Basset force is reset to zero after each rebound from the wall. However, the integral of Basset force is sometimes calculated from the moment t-Tback to the current moment t. A few particle jumps can occur during “the memory time period” Tback , the history of the particle motion during this period must be taken into account totally, including the particle–wall collisions. In the paper the contributions of the particle–wall collisions in the Basset force are expressed by formula. It is shown that in the moment of the collision tc the value of the Basset force becomes infinitely large. In the moment near the collision t = tc+ Δ t (Δ t < tc) the value of the Basset force is great but the impulse of the Basset force has the order of , i.e. small. Thus, a particle-wall collision brings to a peak the increase of the Basset force during the short time so that its impulse remains finite. It must be taken into account into numerical models.
