... in the channel region, which does not address whether such model can predict detailed pressure and velocity field. For the first time, this work addresses under what circumstances and with what uncertainty does the PM approach work for hydrodynamics modeling in compact HXs. By answering these questions, we...

... studies. In this work, the effect of direction of the flow and Reynolds number on the flow phenomena generated in a Tesla–diode valve is studied. Particle shadowgraph velocimetry (PSV) is utilized to investigate and visualize the velocity field. The results of this study confirm some of the phenomena...

... of approach of the waves were investigated. For favorable waves, with flow velocity at crests parallel to vortex flow, surface deformations were weaker, lasted longer than for a vortex without waves, and were characterized at late times by the appearance of surface-normal vortices. For unfavorable waves...

... , S. , King , C. , Richardson , M. D. , Bower , G. R. , Congedo , P. , and Lewis , W. , 2002 , “ Observations of Velocity and Orientation of Cylindrical Shapes in Free-Fall in Water ,” Fifth International Symposium on Technology and the Mine Problem , Naval Postgraduate...

...-dimensional numerical solution shows significant effects of surface roughness in terms of the rough elements’ height, size, spacing, and the channel height on both the velocity distribution and the pressure drop. The compression-expansion flow around the three-dimensional roughness elements and the flow...

...Anthony M. Falcone; Joseph C. Cataldo Mean radial and turbulent radial velocity profiles were measured in a circular jet at up to 40 jet diameters downstream of the jet exit using an LDA. The mean radial velocity in the ambient reservoir (the entrainment velocity) is found to be inversely...

...S. K. Ali; J. F. Foss The discharge coefficient, C D , of a planar, submerged slit-jet has been determined experimentally over a relatively wide range of Reynolds number values: Re = 100 - 6500 , where the slit width ( w ) and the average streamwise velocity (〈 U 〉) at the exit plane are used...

...F. Dupont; C. Gabillet; P. Bot The isothermal flow in a model channel of plate-fin heat exchanger with periodically arranged embossed-like vortex generators is investigated. Velocity measurements are performed by LDA in the transitional regime (Reynolds number from 1000 up to 5000). Strong...

... for a control station connected to an actuator for flow manipulation. With this “closed-loop” system of PIV and PID controllers, it is possible to control increase or decrease turbulence quantities or length scales. Special techniques for the on-line measurement are developed. The mean velocity is computed...

... correlation methods shear flow velocity In strong adverse pressure gradient (APG) boundary layers the main turbulent production term, − uv ¯ ∂ U / ∂ y , has two maxima, one close to the surface and a second which moves towards the middle of the layer with increasing pressure...

... inviscid-like nature at high values of the frequency parameter. The shape of the velocity profiles is strongly influenced by the frequency parameter, whereas the influence of variations on the pipe cross-sectional area is shown to be rather weak. For large values of the frequency parameter the flow history...

..., as for the free decaying swirling flow presented in this study. The three-dimensional motion involved induces a spatial dependent velocity-field. Thus, the interpolating method has to be three-dimensional and to take into account possible flow nonlinearity, making common methods unsuitable. A different...

... Fourier transformation (FFT) method and a conventional iteration method were used in solving the Poisson equation. The predicted distributions of indoor air velocity, temperature, and contaminant concentrations show that the three subgrid-scale models can produce acceptable results for indoor environment...