Results 21 to 30 of about 4,606,414 (240)

Turbulence Formation due to Vortices Interaction in the Laminar Channel Flow behind the Rib [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2015
This paper is devoted to the study of local laminar-turbulent transition mechanisms in the channel flow behind the semi-circular rib. Using direct numerical simulation, it was demonstrated that the transition occurs mainly due to the interaction of ...
A.B. Mazo, D.I. Okhotnikov
doaj  

The numerical study of heat transfer enhancement using al2o3-water nanofluid in corrugated duct appl

open access: yesJournal of Thermal Engineering, 2018
Heat transfer enhancement in channel flow is investigated in the present study by using corrugated duct in lieu of smooth duct. In this regard, periodic different cavities are applied on the duct walls using the same aspect ratios.
Nehir Tokgoz
doaj   +1 more source

The Effect of Internal and External Heating on the Free Convective Flow of a Bingham Fluid in a Vertical Porous Channel

open access: yesFluids, 2019
We study the steady free convective flow of a Bingham fluid in a porous channel where heat is supplied by both differential heating of the sidewalls and by means of a uniform internal heat generation.
D. Andrew S. Rees, Andrew P. Bassom
doaj   +1 more source

Assessment of Solution Algorithms for LES of Turbulent Flows Using OpenFOAM

open access: yesFluids, 2019
We validate and test two algorithms for the time integration of the Boussinesq form of the Navier—Stokes equations within the Large Eddy Simulation (LES) methodology for turbulent flows.
Santiago López Castaño   +3 more
doaj   +1 more source

Effect of thermal wall condition on the dissimilarity of momentum and heat transfer in pulsating channel flow

open access: yesJournal of Thermal Science and Technology, 2020
Pulsating turbulent channel flows under constant temperature difference (CTD) condition and uniform heat flux heating (UHF) condition are studied by direct numerical simulation (DNS).
Tatsuro YAMAZAKI   +3 more
doaj   +1 more source

A Nonlinear System of Differential Equations in Supercritical Flow Spread Problem and Its Solution Technique

open access: yesAxioms, 2022
A nonlinear system of differential equations in the problem of free flowing of supercritical flow is considered and a method of its solution is proposed. The analytical method is based on the introduction of the velocity hodograph plane and the obtaining
Sergej Evtushenko
doaj   +1 more source

New Facility for Membrane Fouling Investigations under Customizable Hydrodynamics: Validation and Preliminary Experiments with Pulsating Cross-Flow

open access: yesMembranes, 2022
Flux reduction induced by fouling is arguably the most adverse phenomenon in membrane-based separation systems. In this respect, many laboratory-scale filtration studies have shown that an appropriate use of hydrodynamic perturbations can improve both ...
Roberto Bert   +2 more
doaj   +1 more source

Management of Two-Dimensional Channel Flow with a Pair of Streamwise Vortices

open access: yesJournal of Fluid Science and Technology, 2007
An experimental study was conducted to examine the management of a two-dimensional turbulent channel flow with a pair of streamwise vortices. A common-flow down type streamwise vortex pair, generated by a pair of half-delta wings mounted on the wall, was
Shinsuke MOCHIZUKI   +3 more
doaj   +1 more source

Importance of Viscosity Contrast for the Motion of Erythrocytes in Microcapillaries

open access: yesFrontiers in Physics, 2021
The dynamics and deformation of red blood cells (RBCs) in microcirculation affect the flow resistance and transport properties of whole blood. One of the key properties that can alter RBC dynamics in flow is the contrast λ (or ratio) of viscosities ...
Anil K. Dasanna   +3 more
doaj   +1 more source

Pressure Drop of Two-Phase Flow Through Horizontal Channel with Smooth Expansion [PDF]

open access: yes, 2012
Industrial systems at where gas-liquid flow is extensively used generally have complex geometries including singularities like expansion, contraction, bends and orifices.
Eskin, Nurdil, Deniz, Emrah
core   +1 more source

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