expansion fan meaning in Hindi

Examples

1. Prandtl-Meyer fans can be expressed as both compression and expansion fans.
2. The Prandtl-Meyer expansion fans allowed for the construction of supersonic wind tunnels.
3. In this case, the expansion fan is first to form, followed by the oblique shock.
4. This cancels / fills the expansion fan forming at the rear, leaving no external shock waves to propagate to infinity.
5. The compressed flow is alternately expanded by Prandtl-Meyer expansion fans, and each " diamond " is formed by the pairing of an oblique shock with an expansion fan.
6. The compressed flow is alternately expanded by Prandtl-Meyer expansion fans, and each " diamond " is formed by the pairing of an oblique shock with an expansion fan.
7. Eventually the flow expands enough so that its pressure is again below ambient, at which point the expansion fan reflects from the contact discontinuity ( the outer edge of the flow ).
8. As opposed to the flow encountering an inclined obstruction and forming an oblique shock, the flow expands around a convex corner and forms an expansion fan through a series of isentropic Mach waves.
9. Placing a diamond-shaped object at an angle of attack relative to the supersonic flow streamlines will result in two oblique shocks propagating from the front tip over the top and bottom of the wing, with Prandtl-Meyer expansion fans created at the two corners of the diamond closest to the front tip.
10. In particular, Meyer developed the theory for how gases traveling at supersonic speed slow down abruptly through oblique shock waves, and how they accelerate smoothly through what we now call a Prandtl Meyer expansion fan . then the underlying theory appeared in Meyer's Ph . D . dissertation, hence the present terminology for the Prandtl Meyer function and the Prandtl Meyer expansion fan.