Numerical simulation of fluid flow and sensitivity analysis in rough-wall fractures

2018 ◽  
Vol 168 ◽  
pp. 546-561 ◽  
Author(s):  
Bing Kong ◽  
Shengnan Chen
Keyword(s):  
Numerical Simulation ◽  
Sensitivity Analysis ◽  
Fluid Flow ◽  
Rough Wall

scholarly journals Selective Transport of Airborne Microparticles Through Micro-channels Under Microgravity

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Monia Makhoul ◽  
Philippe Beltrame
Keyword(s):  
Numerical Simulation ◽  
Fluid Flow ◽  
Bifurcation Analysis ◽  
Metal Particles ◽  
Microgravity Environment ◽  
Ratchet Effect ◽  
Selective Transport ◽  
Microgravity Experiments ◽  
Particle Drift ◽  
Micro Channels

AbstractThis paper analyzes the possibility of obtaining the selective transport of microparticles suspended in air in a microgravity environment through modulated channels without net displacement of air. Using numerical simulation and bifurcation analysis tools, we show the existence of intermittent particle drift under the Stokes assumption of the fluid flow. The particle transport can be selective and the direction of transport is controlled only by the kind of pumping used. The selective transport is interpreted as a deterministic ratchet effect due to spatial variations in the flow and the particle drag. This ratchet phenomenon could be applied to the selective transport of metal particles during the short duration of microgravity experiments.

Direct numerical simulation of fluid flow in a 5x5 square rod bundle

2021 ◽  
Vol 90 ◽  
pp. 108833
Author(s):  
Adam Kraus ◽  
Elia Merzari ◽  
Thomas Norddine ◽  
Oana Marin ◽  
Sofiane Benhamadouche
Keyword(s):  
Numerical Simulation ◽  
Fluid Flow ◽  
Direct Numerical Simulation ◽  
Rod Bundle
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