vortex sheet वाक्य
उदाहरण वाक्य
मोबाइल
- It describes the evolution of the vortex sheet given initial conditions.
- Greater details on vortex sheets can be found in the textbook by Saffman ( 1977 ).
- The combination of the wingtip vortices and the vortex sheets feeding them is called the vortex wake.
- The discontinuity in the tangential velocity means that the flow has infinite vorticity on a vortex sheet.
- The vortex sheet solution as given by the Birkoff-Rott equation cannot go beyond the critical time.
- The formulation of the vortex sheet equation of motion is given in terms of a complex coordinate z = x + iy.
- It was readily known that such steady flows are not stable, since the vortex sheets develop so-called Kelvin Helmholtz instabilities.
- After the flow leaves the trailing edge, this difference in velocity takes place across a relatively thin shear layer called a vortex sheet.
- There have been extensive studies on a vortex sheet, most of them by discrete or point vortex approximation, with or without desingularization.
- As the vortex sheet is convected downstream from the trailing edge, it rolls up at its outer edges, eventually forming distinct wingtip vortices.
- Using a point vortex approximation and delta-regularization Krasny ( 1986 ) obtained a smooth roll-up of a vortex sheet into a double branched spiral.
- The spontaneous loss of analyticity in a vortex sheet is a consequence of mathematical modeling since a real fluid with viscosity, however small, will never develop singularity.
- Continuous approximation of a vortex sheet by vortex panels with arc wise diffusion of circulation density also shows that the sheet rolls-up into a double branched spiral.
- Alternatively, calculated from the flowfield perspective ( far-field approach ), the drag force comes from three natural phenomena : shock waves, vortex sheet, and viscosity.
- A "'vortex sheet "'is a term used in fluid mechanics for a surface across which there is a normal component of the flow velocity is continuous.
- However, the propellers are operating in a turbulent airflow in the pusher configuration ( due to airflow past the wings moving aft in vortex sheets ) and high-velocity exhaust gasses are discharged directly into the propellers, thus making them noisier than they would be in a tractor configuration.
- In fluid dynamics, a "'K�rm�n vortex street "'( or a "'von K�rm�n vortex sheet "') is a repeating pattern of swirling singing " of suspended telephone or power lines, and the vibration of a car antenna at certain speeds.
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