Unsteady three-dimensional simulation of interactions
between ﬂow and two particles
, R. Narutomi
, T. Yokomine
, S. Ebara
, A. Shimizu
Advanced Energy Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga,
Fukuoka 816-8580, Japan
Energy Science Division, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
Received 3 June 2002; received in revised form 24 June 2003
Unsteady three-dimensional simulation of interactions between uniform ﬂow and ﬁxed identical two
particles is performed for particle Reynolds number 30, 100, 200 and 250. The drag force of interactive
particles depends on Reynolds number as well as the inter-particle distance. They are attenuated
when particles are aligned streamwise, augmented when they are held side by side against the mean ﬂow.
These are compared with available experimental data. Existence of periodical double-sided vortex shedding
at relatively low Reynolds number is observed when particles are almost touching. The method adopted in
this paper is not only simple and easy, but also accurate with a proper resolution.
Ó 2003 Elsevier Ltd. All rights reserved.
Keywords: Flow–particles interaction; Multiphase ﬂow; Direct numerical simulation; Drag force; Visualization; Wake
Particulate multiphase ﬂow that carries small particles or droplets in ﬂow is quite important
in natural and industrial ﬁelds such as diﬀusion of pollutant, energy conversion systems,
combustion systems, and chemical processes. In this kind of ﬂow, transportation of momentum,
International Journal of Multiphase Flow 29 (2003) 1431–1450
Corresponding author. Tel.: +81-92-583-7603; fax: +81-92-583-7601.
E-mail address: email@example.com (T. Tsuji).
Present address: Mitsubishi Heavy Industries Co. Ltd., Tokyo, Japan.
0301-9322/$ - see front matter Ó 2003 Elsevier Ltd. All rights reserved.