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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Prandtl Boundary Layer in An Infinitely Long Convergent Channel
无穷长 收敛通道 Prandtl边界层
2023/11/7
This talk is about the large Reynold number limits and asymptotic behaviors of solutions to the 2D steady Navier-Stokes equations in an infinitely long convergent channel. We will show that for a gene...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Layer separation for the 3D Navier-Stokes equation in a bounded domain
有界域 三维 纳维-斯托克斯方程 层分离 NS方程
2023/4/26
We provide an unconditional $L^2$ upper bound for the boundary layer separation of 3D Leray--Hopf solutions in a smooth bounded domain. By layer separation, we mean the discrepancy between a (turbulen...
Grid-Free Simulation of the Spatially Growing Turbulent Mixing Layer
Grid-Free Simulation Spatially Growing Turbulent Mixing Layer
2016/5/18
The spatially developing, unforced, turbulent mixing layer is simulated via a grid-free vortex method. Vortex filaments composed of straight tubes are used as the computational element with new vortex...
Vortex Filament Simulation of the Turbulent Boundary Layer
Vortex Filament Simulation Turbulent Boundary Layer
2016/5/18
A hybrid vortex fi lament scheme with the capability of simulating bounded turbulent fl ows is described. Viscous generation of new vortex elements at solid surfaces is accomplished through the interm...
DELAYING TRANSITION FURTHER WITH THE AID OF A SHORT COMPLIANT PANEL IN A BLASIUS BOUNDARY LAYER FLOW
compliant boundary layer wavepackets
2014/5/4
The cost of fuelling especially for those in the transport industries could be reduced drastically if there is a means of reducing drag force over their vehicles while in motion. One way to overcome t...
Nonlinear mushy-layer convection with chimneys: stability and optimal solute fluxes
Nonlinear mushy-layer convection chimneys stability and optimal solute fluxes Fluid Dynamics
2012/5/28
We model buoyancy-driven convection with chimneys -- channels of zero solid fraction -- in a mushy layer formed during directional solidification of a binary alloy in two-dimensions. A large suite of ...
Electrohydrodynamics within electrical double layer in a pressure-driven flow in presence of finite temperature gradients
Electrohydrodynamics electrical double layer pressure-driven flow Fluid Dynamics
2012/5/17
A wide spectrum of electrokinetic studies is modelled as isothermal ones to expedite analysis even when such conditions may be extremely difficult to realize in practice. As a clear and novel departur...
Absolute linear instability in laminar and turbulent gas/liquid two-layer channel flow
Absolute linear instability laminar and turbulent gas/liquid two-layer channel flow Fluid Dynamics
2012/4/20
We study two-phase stratified flow where the bottom layer is a thin laminar liquid and the upper layer is a fully-developed gas flow. The gas flow can be laminar or turbulent. To determine the boundar...
Hydrodynamics of intertidal oyster reefs: The influence of boundary layer flow processes on sediment and oxygen exchange
fi ltration respiration turbulence Crassostrea virginica
2014/4/1
An intertidal Crassostrea virginica oyster reef was instrumented to quantify processes affecting boundary
layer flow, suspended sediment deposition and erosion, and the flux of oxygen to ...
Hydrodynamics of intertidal oyster reefs: The influence of boundary layer flow processes on sediment and oxygen exchange
fi ltration respiration turbulence Crassostrea virginica
2014/4/1
An intertidal Crassostrea virginica oyster reef was instrumented to quantify processes affecting boundary
layer flow, suspended sediment deposition and erosion, and the flux of oxygen to ...
A note on the magnetic spatial forcing of a ferrofluid layer
magnetic spatial ferrofluid layer
2011/9/2
We report on the response of a thin layer of ferrofluid to a spatially modulated magnetic field. This field is generated by means of a constant current in a special arrangement of aluminum wires. The ...
Boundary layer flow over a moving surface in a nanofluid with suction or injection
Nanofluid Moving plate Boundary layer Suction/injection Dual solutions
2012/2/24
An analysis is performed to study the heat transfer characteristics of steady two-dimensional boundary layer flow past a moving permeable flat plate in a nanofluid. The effects of uniform suction and ...
A Comment Upon Previous Studies on 3-D Boundary Layer Transition
3-D Boundary Layer Transition
2009/10/15
The common feature of the experimental studies upon 3-D boundary layer development on swept flat plates cited in the available literature is the application of streamwise and/or spanwise pressure grad...
MEASUREMENTS OF HIGHER-ORDER TURBULENT STATISTICS IN A TURBULENT BOUNDARY LAYER SUBJECTED TO A SHORT ROUGHNESS STRIP
measurements turbulence boundary layer
2009/10/14
Hot-wire measurements have been undertaken in a turbulent boundary layer which is subjected to an impulse in form of a short roughness strip with the aim of determining its effect on turbulence struct...
COMBINED OF MAGNETIC FIELD AND THERMOPHORESIS PARTICLE DEPOSITION IN FREE CONVECTION BOUNDARY LAYER FROM A VERTICAL FLAT PLATE EMBEDDED IN A POROUS MEDIUM
mass transfer magnetic field thermophoresis
2009/10/14
Deals with heat and mass transfer by steady laminar boundary layer flow of Newtonian, viscous fluid over a vertical flat plate embedded in a fluid-saturated porous medium in the presence of thermophor...