near-wall turbulent flow
The Effect of Near Wall Vortices on Wall Shear Stress in Turbulent Boundary Layers
... channel flow are ...the flow in detail and obtained lots of important consequence ...two-dimensional turbulent channel flows directly with spectral method is firstly introduced, and the accuracy and ...
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RELAMINARIZATION OF TURBULENT CHANNEL FLOW USING TRAVELING WAVE-LIKE WALL DEFORMATION
... in wall-bounded turbulent flow is of great importance for mitigating environmental impact through the efficient utilization of ...solid wall, as compared to that in laminar flows, is ...
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Turbulent channel flow over an anisotropic porous wall - drag increase and reduction
... the near-wall flow topology are clearly observable in the left panel of figure 5, which displays instantaneous iso-contours of the streamwise component of the velocity at the interface for the cases ...
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Application of the electrodiffusion method for near-wall flow diagnostics
... the flow measurement done in close proximity of the wall, thus in the region difficultly accessible by standard anemometric techniques ...different flow configurations (backward-facing step ...
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Numerical and experimental investigation of impinging turbulent flow of twin jets against a wall
... complicated turbulent ow are ...the near wall region, none of the models can predict ow characteristics with reasonable ...the turbulent kinetic energy occurred in the shear layers and ...
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Modelling extreme concentration from a source in a turbulent flow over rough wall
... The relative concentration fluctuations, demonstrated by vertical and lateral profiles of fluctuation r.m.s for a GLS and ES obtained from LES were in good agreement with measurements. We stress again that modelling ...
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LES and RANS for turbulent flow over arrays of wall mounted obstacles
... a wall provides an excellent test case for validation for ...investigate flow over staggered cubes or spheres, or aligned ...of turbulent channel flow with one wall comprising similar ...
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Direct numerical simulation of a decelerated wall bounded turbulent shear flow
... which near-wall and outer-layer turbulence respond to an ...or turbulent, to an APG is reduction of the near-wall ...the wall (Smits & Wood ...(and turbulent) diffusion ...
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Experimental Study of Boundary Layer Flow Control Using an Array of Ramp-Shaped Vortex Generators
... the wall was ...a turbulent boundary layer without VGs. The span-averaged near wall velocity for the no-VG case increases with axial position because the growth in the survey step size ...
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Robust flow stability : theory, computations and experiments in near wall turbulence
... the flow and their evolution as they are convected ...mean flow and the ...a turbulent spot in the frames that have been detailedly ...a turbulent spot one needs a strong local disturbance, ...
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Study of nano particle deposition in tubular pipes under turbulent condition
... Fig. 4 shows the predicted non-dimensional root mean square turbulence velocity fluctuations for the tubular pipe flow in compare with the DNS results of Kim et al. [12]. The velocity fluctuations are highly ...
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The multi-scale nature of Wall shear stress fluctuations in turbulent Rayleigh-Benard convection
... by turbulent convection is characterized by a subtle interplay between small-scale turbulence in the near-wall flow field at the heated/cooled surfaces and the large-scale structures evolving ...
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Turbulent channel flow near maximum drag reduction: simulations, experiments and mechanisms
... The peak value of the r.m.s of the streamwise velocity fluctuations increases with increasing parameter b compared to Newtonian flow. At the same time the maximum of the r.m.s. of the streamwise velocity is located further ...
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Destabilizing turbulence in pipe flow
... the flow in the central part of the pipe cross section while it accelerates the flow in the near wall ...fully turbulent flow completely ...the flow remains laminar for ...
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Effects of wall compliance on the laminar–turbulent transition of torsional Couette flow
... that wall compliance enhances the mechanisms responsible for sustaining both the SRIII waves and the turbulent spirals, thereby broadening the parameter regimes over which they are ...the turbulent ...
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The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer
... the flow geometry, whereas the smallest one is defined by the viscous ...the turbulent kinetic energy into the heat is typical for the smallest ...the turbulent kinetic energy into the internal ...
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Curvature effects on a turbulent jet flow over a wall.
... entrainment flow induced by the wall Jets has also drawn the attention of several ...airstream near the exit of the ...the flow nearly perpendicular to the ...
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Solid Boundary as Energy Source and Sink in a Dry Granular Dense Flow: A Comparison between Two Turbulent Closure Models
... the turbulent kinetic energy and dissipation, the influence of turbulent eddy evolution is accounted for in the first-order model, re- sulting in more efficient turbulent kinetic energy transfer ...
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CFD Study of the Turbulent Forced Convective Heat Transfer of Non-Newtonian Nanofluid
... of turbulent convective heat transfer and pressure drop of dilute CuO/water nanofluid inside a circular tube", International Communications in Heat and Mass Transfer, 37, 214, ...
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Statistical Characteristics of New Type Internal Wave in the Ionospheric F Region
... Abstract: Second order statistical moments of new internal MHD wave in the ionospheric F region are investigated analytically by geometrical optics approximation. Degree of a curvature of a constant phase surface and the ...
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