Results 71 to 80 of about 96,065 (304)

Numerical Simulations of Turbulent Gas-solid Flow in a Gradual Expansion [PDF]

Journal of Applied Fluid Mechanics
Modeling efforts on turbulent gas-solid flows have mainly focused on studying particle-laden flows in channels and pipes. Despite its significance for industrial applications, the study of gas-solid flows in sudden or gradual expansions is less common in
A. Benavides-Moran, S. Lain
doaj   +1 more source

Turbulence energetics in stably stratified geophysical flows: strong and weak mixing regimes

, 2008
Traditionally, turbulence energetics is characterized by turbulent kinetic energy (TKE) and modelled using solely the TKE budget equation. In stable stratification, TKE is generated by the velocity shear and expended through viscous dissipation and work ...
Abarbanel, Abarbanel, Bange, Canuto, Canuto, Canuto, Chandrasekhar, Cheng, Churchill, Dalaudier, Elperin, Esau, Galperin, Hanazaki, Hanazaki, Hansen, Holloway, Hunt, Jin, Kaimal, Keller, Kim, Kolmogorov, Lawrence, Lilly, Lorenz, Lorenz, Luyten, Mahrt, Mauritsen, Mauritsen, Miles, Miles, Monin, Monin, Monti, Nappo, Ohya, Phillips, Phillips, Polyakov, Poulos, Prandtl, Rehmann, Rehmann, Richardson, Schumann, Smedman, Strang, Taylor, Tennekes, Turner, Umlauf, Uttal, Zilitinkevich, Zilitinkevich   +55 more
core   +1 more source

Erosion of granular sediments by submerged impinging jets: Particle size effects and cohesion onset

AIChE Journal, EarlyView.
Abstract This study investigates the erosion behavior and modeling of glass particle beds under impinging jet conditions, with a focus on particle size effects and the onset of cohesion. Ultrasonic profiling is implemented to scan and measure static crater profiles.
Ahmad Mohamadiyeh, Jeffrey Peakall, Michael Fairweather, Martyn Barnes, Timothy N. Hunter   +4 more
wiley   +1 more source

Turbulence Model Assessment in Compressible Flows around Complex Geometries with Unstructured Grids

Fluids, 2019
One of the key factors in simulating realistic wall-bounded flows at high Reynolds numbers is the selection of an appropriate turbulence model for the steady Reynolds Averaged Navier−Stokes equations (RANS) equations.
Guillermo Araya
doaj   +1 more source

Turbulence lifetimes: what we can learn from the physics of glasses

, 2012
In this note, we critically discuss the issue of the possible finiteness of the turbulence lifetime in subcritical transition to turbulence in shear flows, which attracted a lot of interest recently.
D. D. Joseph, D. Samanta, Eric Bertin, H. Chaté, J.-P. Bouchaud, L. Struik, Olivier Dauchot, S. Redner, U. Frisch   +8 more
core   +4 more sources

Turbulent bubbly flow in pipe under gravity and microgravity conditions [PDF]

, 2012
Experiments on vertical turbulent flow with millimetric bubbles, under three gravity conditions, upward, downward and microgravity flows (1g, -1g and 0g), have been performed to understand the influence of gravity upon the flow structure and the phase ...
Colin, Catherine, Fabre, Jean, Kamp, Arjan   +2 more
core   +3 more sources

Scale‐up of Streptomyces species cultivations based on the morphological response to the energy dissipation rate

AIChE Journal, EarlyView.
Abstract Filamentous microorganisms exhibit complex morphologies that influence product formation and are affected by various bioprocess parameters. Consistent morphology is therefore essential for comparable results during scale‐up. This study investigates the scale‐up of Streptomyces species (Streptomyces spp.) cultivations from shake flasks to ...
Gesa Brauneck, Anton Brass, Artiom Boreiko, Marvin Ueßeler, Marcel Mann, Johannes Pastoors, Valentin Steier, Philipp Eibl, Christian Witz, Dorothea M. Schütterle, Ivan Schlembach, Miriam A. Rosenbaum, Jorgen Magnus   +12 more
wiley   +1 more source

Microfluidic Mixing with the Dynamic Control of Magnetic Actuation

Advanced Intelligent Systems, EarlyView.
Schematic illustration and flow field visualization of magnetically actuated L‐shaped microrobots displaying cooperative vortex generation for enhanced microscale mixing. The left side shows the electromagnetic actuation setup, which enables programmable control of rotational direction and frequency.
Prashant Kishor Sharma, Tsung‐Yen Lu, Chia‐Yuan Chen   +2 more
wiley   +1 more source

Comparison of numerical results of linear and nonlinear turbulence models based on the rans approach [PDF]

E3S Web of Conferences
This paper considers one of the urgent problems of modern physics — numerical solution of turbulent flows, which play a key role in various fields of science and technology, including aerodynamics, hydrodynamics and heat transfer processes.
Madaliev Murodil, Yunusaliev Elmurad, Abdulkhaev Zokhidjon, Otakulov Bakhromjon, Yusupov Sardorbek, Ergashev Ilhom, Tohirov Islomjon   +6 more
doaj   +1 more source

Enhancement of small-scale turbulent dynamo by large-scale shear

, 2017
Small-scale dynamos are ubiquitous in a broad range of turbulent flows with large-scale shear, ranging from solar and galactic magnetism to accretion disks, cosmology and structure formation.
Brandenburg, Axel, Rogachevskii, Igor, Singh, Nishant K.   +2 more
core   +1 more source