near wall region
nPIV velocity measurement of nanofluids in the near wall region of a microchannel
... detailed near-wall fluid flow study at ...the near-wall velocity measurements for nanofluids using nanoparticle image ...measure near-wall velocity field with an out- of-plane ...
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Computing the near-wall region in gas micro- and nanofluidics : critical Knudsen layer phenomena
... the wall function approach in turbulent macroscale flow ...the wall, can be used as a constitutive model for the thermal Knudsen layer in non-isothermal ...
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Computing the near-wall region in gas micro- and nanofluidics : critical Knudsen layer phenomena
... critical near-wall phenomena in gas micro- and nanoflows within conventional CFD codes, we present scaled Navier-Stokes-Fourier (NSF) constitu- tive ...flow near to the wall (the mo- mentum ...
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Wind tunnel measurements of turbulent boundary layer flows over arrays of ribs and cubes
... The mean and fluctuating velocities are measured by a constant-temperature hot-wire anemometer (CTA). A X-wire probe is mounted to measure streamwise u and vertical w velocity components. The sensing elements are made of ...
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Application of the electrodiffusion method for near-wall flow diagnostics
... a wall is often used to measure local values of the wall shear stress or to obtain information on the flow structure in the near-wall ...the wall shear rate J according to the ...
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Direct numerical simulation of the passive heat transfer in a turbulent flow with particle
... the near wall region, the particle is transported mainly by the large turbulent coherent structures and strongly depends on the ejections and ...
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A vortex method for wall bounded turbulent flows
... the near wall region while the vorticity in the remainder of the ow is contained in convecting and stretching vortex ...their wall-normal viscous diusion and vortex stretching using nite ...
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Numerical Investigation of Multijet Air Impingement on Pin Fin Heat Sink with Effusion Slots
... the near wall flow phenomenon, dense hexahedral mesh at near wall region is created by using the linear mesh law ...the near wall flow phenomenon but also increases the ...
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Direct numerical simulation of supersonic turbulent flow in an expansion compression corner at mach=2 9
... the near-wall region, we can see the classic streamwise elongated streaks in the upstream undisturbed boundary layer region and the distance between two neighbouring low-speed streaks is about ...
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Direct numerical simulation of supersonic turbulent flows around a tandem expansion compression corner
... interaction region where flow separation and reattachment ...small region around the expansion corner, and the near-wall quasi-streamwise vortices were well ...patterns near the ...
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Three Dimensional Simulation of Time-Dependent Scramjet Isolator/Combustor Flowfields Implemented on Parallel Architectures
... the reactive shear layer has also propagated upstream in the near wall region as shown by. the temperature at the z[r] ...
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The Effect of Near Wall Vortices on Wall Shear Stress in Turbulent Boundary Layers
... between near-wall vortices and the wall shear stress can be presented with the instantaneous diagrams of fluctuation velocity vec- ...of near-wall vortices moves ...the ...
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The Study of boundary layer control in a turbopump diffuser with fluid injection
... Page 5 LH2 Turbopump Velocity Ratio Diffuser Crossover Rocketdyne H20 Tester Page 6 Passage Definition Page 7 Near Wall Model Page 14 Stress Profiles in the Near Wall Region Page 18 Univ[r] ...
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Regeneration mechanism of organized structures in near wall turbulence
... 5.34 Optimal energy growth versus wavelength for optimization times representative of the eddy turnover time near the wall for scalar 0„4 5.35 Eddy turnover time.. versus distance from t[r] ...
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Flow pulsation in the near-wall layer of impinging jets
... Abstract. Pulsation of impinging jets promises to become a useful way towards achieving the highest possible rate of passive scalar convective transport between fluid and a wall. Author investigated experimentally ...
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Near-wall scaling for incompressible and compressible flows
... in wall-normal ...The wall shear stress of the time averaged flow field is plotted in Figure ...negative wall shear stress exists at x/h ≈ ...channel wall (Figure ...
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Does the internal jugular vein affect the elasticity of the common carotid artery?
... It has been known for 50 years that the rigidity of the ca- pillary vessel is largely affected by surrounding tissue accord- ing to the “tunnel-in-gel” concept [12]. This theory has also been confirmed in a pig animal ...
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PIV and LIF study of slot continuous jet at low Reynolds number
... The visualization in the middle of the actuator slots (figure 2a) shows the evolution of the jet and its gradual spreading. The influence of the geometry of the exit part of the cavity and the nozzle is visible - since ...
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Wall laws for viscous fluids near rough surfaces
... on wall laws for viscous fluids near rough surfaces, of small amplitude and wavelength ...the wall law at first order is the Dirichlet wall law: the fluid satisfies a “no-slip” boundary ...
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Near-wall behaviour of implicit large eddy simulations
... too. Wall cooling slightly enhances compressibility effects and increases the coherency of turbulent structures, however, its effects remain insignificant even for a su- personic turbulent channel ...the ...
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