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Numerical Study of Boundary Layer Flows

A numerical study of entropy generation, heat and mass transfer in boundary layer flows.

A numerical study of entropy generation, heat and mass transfer in boundary layer flows.

... this study are Jeffrey, Maxwell, and Oldroyd ‐ B ...The study of Jeffrey nanofluid flow over an exponential stretching sheet by Hussain et al 5 included an evaluation of the impact of Brownian motion, ...

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Interaction vortex - boundary layer : numerical study of wall mechanisms

Interaction vortex - boundary layer : numerical study of wall mechanisms

... incompressible flows are characterized by compact rotational ...such flows by discretizing the zones of concentrated vorticity with vortical particles and displacing them by a lagrangian technique ...the ...

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Nonlinear Stability of Supersonic Nonparallel Boundary Layer Flows

Nonlinear Stability of Supersonic Nonparallel Boundary Layer Flows

... nonparallel boundary layer flows by using nonlinear parabolic stability equations ...accurate numerical method is developed to solve the equations and march the NPSE in a stable ...to ...

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Numerical Simulation of Shock Wave and Boundary Layer Interactions on Premixed Combustible Gas Flows over a Compression Ramp

Numerical Simulation of Shock Wave and Boundary Layer Interactions on Premixed Combustible Gas Flows over a Compression Ramp

... Abstract- Numerical solution is a cost effective alternative in various parametric studies including fluid dynamics ...present study gives fairly better agreement with the theoretical ...

6

Development of Modal Analysis for the Study of Global Modes in High Speed Boundary Layer Flows

Development of Modal Analysis for the Study of Global Modes in High Speed Boundary Layer Flows

... the numerical Jacobian using small perturbations to the base ...discretization, boundary conditions, and numerical schemes that were used to converged the under- lying base ...

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Wall Roughness Effects On Shock Boundary Layer Interaction Flows

Wall Roughness Effects On Shock Boundary Layer Interaction Flows

... Shock boundary layer interaction flow features are encountered in many high speed engineering devices such as turbine blades, air wings, intake systems for ram jet engines, ...shock boundary ...

8

Study of separation phenomenon in transonic flows produced by interaction between shock wave and boundary layer

Study of separation phenomenon in transonic flows produced by interaction between shock wave and boundary layer

... compressible flows, the transonic state depends on the geometry, Mach number and the ...and boundary layer concerns separation phenome- ...and boundary layer which can cause ...

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Investigation of the shock wave boundary layer interaction of scramjet intake flows

Investigation of the shock wave boundary layer interaction of scramjet intake flows

... wave/boundary layer interaction (SWBLI) which causes high peak heat loads and affects the direction as well as the load of the aerodynamic ...this study was to provide a correlation for the ...

198

Numerical Modelling of the Influence of Lower Boundary Roughness on Turbulent Sedimentary Flows

Numerical Modelling of the Influence of Lower Boundary Roughness on Turbulent Sedimentary Flows

... turbulent layer profile over a flat ...lower boundary is opposite to what is observed for intermediate and k-type ...upper boundary show the same trend with the increase in Reynolds number in various ...

228

Numerical computations of hypersonic boundary layer roughness induced transition on a  at plate

Numerical computations of hypersonic boundary layer roughness induced transition on a at plate

... on numerical simulations on RIT is represented, among others, by the efforts of the NASA research team led by ...parametric study on the rough- ness height is carried out with the NASA CESE algorithm which ...

16

Boundary-layer effects in liquid-layer flows

Boundary-layer effects in liquid-layer flows

... small and are governed mainly by inviscid dynamics, and two thin viscous wall layers. The core flow suffers a simple lateral. displacement of the relative order o[r] ...

207

Theoretical and numerical studies of atmospheric boundary-layer flows over complex terrain

Theoretical and numerical studies of atmospheric boundary-layer flows over complex terrain

... efficient numerical schemes such as methods based on finite differences or spectral ...of numerical algorithms to solve differential ...and numerical studies have shown that the structure of slope ...

139

A numerical model study of the stratocumulus topped marine boundary layer

A numerical model study of the stratocumulus topped marine boundary layer

... surface layer might prevent the marine stratocumulus layer from drying ...Aq+ boundary layer is on average drier than all the other cases so maintenance of the cloud would eventually not be ...

212

Numerical simulation of wavepackets in a transitional boundary layer

Numerical simulation of wavepackets in a transitional boundary layer

... Figure 1.1: A schematic view of the boundary layer. There are three types of flow observed over a surface: laminar flow, transitional flow and turbulent flow. In general a flow does not remain laminar for ...

201

Near continuum boundary layer flows at a flat plate

Near continuum boundary layer flows at a flat plate

... of boundary layer flows at a flat plate surface with velocity-slip and temperature-jump boundary conditions is ...the boundary layer solutions significantly change their ...plate ...

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Numerical study of thermal streak spacing in turbulent boundary layer with constant heat-flux boundary condition

Numerical study of thermal streak spacing in turbulent boundary layer with constant heat-flux boundary condition

... The size o f the turbulent box was chosen on the basis of the DNS performed on larger boxes: 127T *4 k *2 and 87 t * 4n *2. The criterion for an acceptable box was prediction o f the two-point autocorrelation functions o ...

7

An Experimental and Numerical Study of Roughness-Induced Instabilities in a Mach 3.5 Boundary Layer

An Experimental and Numerical Study of Roughness-Induced Instabilities in a Mach 3.5 Boundary Layer

... the boundary layer in comparison to the baseline ...the boundary layer becomes very thin relative to the baseline laminar boundary layer—a feature that is indicative of a pair of ...

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Numerical Study of Pressure Fluctuations due to a Mach 6 Turbulent Boundary Layer

Numerical Study of Pressure Fluctuations due to a Mach 6 Turbulent Boundary Layer

... Direct numerical simulations (DNS) can overcome many of the aforementioned difficulties with exper- imental measurements of freestream disturbances as well as provide access to quantities that cannot be measured ...

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Numerical wind wave model with a dynamic boundary layer

Numerical wind wave model with a dynamic boundary layer

... a numerical wind wave model of the fourth generation is constructed for a case of deep ...atmospheric boundary layer fitting to a wind wave state according to Makin and Kudryavtsev (1999); (c) a ...

5

Numerical Simulations of the Boundary Layer Transition Flight Experiment

Numerical Simulations of the Boundary Layer Transition Flight Experiment

... B. DPLR simulations Within DPLR, the best practices for modeling surface anomalies on the Shuttle is to use a local analysis approach, where an existing baseline solution for an undamaged Orbiter is interpolated and ...

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