Results 81 to 90 of about 10,643 (314)

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

Automated Process Optimization in a Novel Triple Shaft Mixer with Adaptive Mixing Modes

Chemie Ingenieur Technik, EarlyView.
A novel multi‐purpose mixer with adjustable blade angle and a coaxial stirrer is developed, providing three degrees of freedom. An optimization strategy is integrated to autonomously identify optimal operating conditions through automated tests. The current draw of the main stirrer serves as the optimization criterion, while stirrer speeds, directions,
B. Schwarz, H. Kniele, J. A. Lindner
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

Antisolvent crystallization of lithium hydroxide monohydrate: Significant factors and kinetics analysis

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Crystallization is the final stage in lithium hydroxide monohydrate (LiOH · H2O) production, and antisolvent crystallization offers a lower‐energy route compared with evaporative methods. In this study, we investigated bench‐scale ethanol‐based antisolvent crystallization of LiOH · H2O, and identified the significant impact parameter via a ...
Chentao He, Liuyin Xia
wiley   +1 more source

Theory of x-ray photon correlation spectroscopy for multiscale flows

Physical Review Research
Complex multiscale flows associated with instabilities and turbulence are commonly induced under high-energy density (HED) conditions, but accurate measurement of their transport properties has been challenging.
Hao Yin, Charles Heaton, Eric G. Blackman, Arianna E. Gleason, Joshua J. Turner, Gilbert W. Collins, Gianluca Gregori, Jessica K. Shang, Hussein Aluie   +8 more
doaj   +1 more source

Evaluation of bed shear stress under turbid flows through measures of flow deceleration

, 2006
In previous work it has been observed that the direct application of the law-of-the-wall in flows of high concentrations of cohesive sediments, results in overestimation of the bed shear stress.
Angelaki, M.
core  

Comparison of modelling approaches for liquid fluidized beds

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study presents a comparison of three promising numerical models for the detailed simulation of liquid–solid fluidized bed. These models differ in their treatment of the solid phase, ranging from treating each particle individually to treating the collection of particles as a continuum.
Andreu Bernad‐Serra, Furkhat Khamitov, Olli H. Sorvari, Ville Alopaeus   +3 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

Conditional moment closures for turbulent reacting flows [PDF]

, 2003
Mathematical modelling of the turbulent combustion process is becoming increasingly applied in calculations to assist in the design and analysis of practical combustion devices for efficiency-improvement and emission reduction. The current requirement to
Woolley, Robert Michael
core  

Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati, Augusto Del Zotto, Klaus Widmayer   +2 more
wiley   +1 more source