Velocity profile inversion in dense avalanche flow

Force-velocity correlations in a dense, collisional, granular flow

We report measurements in a 2-dimensional, gravity-driven, collisional, granular flow of the normal force delivered to the wall and of particle velocity at several points in the flow. The wall force and the flow velocity are negatively correlated. This correlation falls off only slowly when the wall force is correlated against the flow velocity at various locations across the channel, but dies ...

Velocity profile in a two-layer Kolmogorov-like flow

Velocity Inversion Using Waveletrepresented

If we assume that the velocity proole is an image that can be compressed greatly using wavelets, then a relatively smaller wavelet represented model can be equivalent to a larger physical model; we obtain the modiied Bleistein/Cohen (BC) inversion formulation by restricting the perturbation to the smaller wavelet represented model. The method demonstrates three important features: rst, the BC t...

Effect of Hydrophobic Surface on Velocity Profile of Pipe Flow

The branch of fluid mechanics is also familiar with biomechanics recently. The combination of hydrodynamic and mechanical specification of the flow can reach the complex description of the liquid flow in the hydraulic system. The hydraulic system can represent the airways and ventilation system, and external blood circulation. An important role in the study of hemo-transport has its interaction...

Doppler analysis of flow velocity profile at the aortic root.

This study of aortic root flow velocity profiles suggests that the flow velocity pattern is parabolic rather than flat as has been widely supposed. To analyze the distribution of flow velocity, a special ultrasound pulsed Doppler velocity flow meter, with a direct probe on the aortic wall, was designed. Sixteen patients, none with a diagnosis of aortic valve disease, were examined just before u...