Effect of anisotropic microstructures on fluid–particle drag in low‐Reynolds‐number monodisperse gas–solid suspensions

AIChE Journal ◽  
2020 ◽  
Vol 66 (4) ◽  
Author(s):  
Teng Ma ◽  
Yaxiong Yu ◽  
Xiao Chen ◽  
Qiang Zhou
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Fluid Particle ◽  
Low Reynolds ◽  
Solid Suspensions

Fluid-particle drag in low-Reynolds-number polydisperse gas-solid suspensions

AIChE Journal ◽  
2009 ◽  
Vol 55 (6) ◽  
pp. 1352-1368 ◽  
Author(s):  
Xiaolong Yin ◽  
Sankaran Sundaresan
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Fluid Particle ◽  
Low Reynolds ◽  
Solid Suspensions

Lattice Boltzmann simulations of low-Reynolds-number flow past fluidized spheres: effect of Stokes number on drag force

2016 ◽  
Vol 788 ◽  
pp. 576-601 ◽  
Author(s):  
Gregory J. Rubinstein ◽  
J. J. Derksen ◽  
Sankaran Sundaresan
Keyword(s):  
Reynolds Number ◽  
Drag Force ◽  
Lattice Boltzmann ◽  
Fluidized Beds ◽  
Low Reynolds Number ◽  
Stokes Number ◽  
Fluid Particle ◽  
Spherical Particles ◽  
Lattice Boltzmann Simulations ◽  
Low Reynolds

In a fluidized bed, the drag force acts to oppose the downward force of gravity on a particle, and thus provides the main mechanism for fluidization. Drag models that are employed in large-scale simulations of fluidized beds are typically based on either fixed-particle beds or the sedimentation of particles in liquids. In low-Reynolds-number ($Re$) systems, these two types of fluidized beds represent the limits of high Stokes number ($St$) and low $St$, respectively. In this work, the fluid–particle drag behaviour of these two regimes is bridged by investigating the effect of $St$ on the drag force in low-$Re$ systems. This study is conducted using fully resolved lattice Boltzmann simulations of a system composed of fluid and monodisperse spherical particles. In these simulations, the particles are free to translate and rotate based on the effects of the surrounding fluid. Through this work, three distinct regimes in the characteristics of the fluid–particle drag force are observed: low, intermediate and high $St$. It is found that, in the low-$Re$ regime, a decrease in $St$ results in a reduction in the fluid–particle drag. Based on the simulation results, a new drag relation is proposed, which is, unlike previous models, dependent on $St$.

Experimental Investigation on Blunt-Edged UTM Delta Wing VFE-2 Configurations at Low Reynolds Number

2018 ◽  
Vol 12 (3) ◽  
pp. 255
Author(s):  
Muhammad Zal Aminullah Daman Huri ◽  
Shabudin Bin Mat ◽  
Mazuriah Said ◽  
Shuhaimi Mansor ◽  
Md. Nizam Dahalan ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Reynolds Number ◽  
Delta Wing ◽  
Low Reynolds Number ◽  
Low Reynolds

HEAT TRANSFER OF IMPINGING JET AT LOW REYNOLDS NUMBER

2018 ◽  
Author(s):  
Vadim V. Lemanov ◽  
Viktor I. Terekhov ◽  
Vladimir V. Terekhov
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Low Reynolds Number ◽  
Impinging Jet ◽  
Low Reynolds
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