WebBecause of the finite size of the local perturbation its reflection lasts for a finite time, during which the perturbed area of the shock discontinuity moves at a velocity that is higher than … Web19 Aug 2024 · Normal shocks are generally treated by defining a stationary adiabatic shock discontinuity with a supersonic upstream velocity. A fundamental feature of this …
Shock tube - Wikipedia
WebIt is known that the interaction of pressure discontinuities preceding the projecting elements of a supersonic object considerably increase the pressure in the interaction region [1–3]. Existing methods of estimating this excess pressure at the leading edge of the projecting element are based on the calculation of the configuration of pressure-discontinuity … Web17 Feb 2024 · Unlike the extensive treatment of the normal incidence of a shock wave on a contact discontinuity, there has been less treatment of the transmitted shock wave from … most comfortable heated blanket
Normal Shock Wave - an overview ScienceDirect Topics
In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance that moves faster than the local speed of sound in the medium. Like an ordinary wave, a shock wave carries energy and can propagate through a medium but is characterized by an abrupt, nearly discontinuous, change in … See more Shock waves can be: Normal At 90° (perpendicular) to the shock medium's flow direction. Oblique At an angle to the direction of flow. Bow Occurs upstream of the front (bow) of a blunt object when the … See more The abruptness of change in the features of the medium, that characterize shock waves, can be viewed as a phase transition: the pressure-time diagram of a supersonic object propagating shows how the transition induced by a shock wave is analogous to a … See more Shock waves can form due to steepening of ordinary waves. The best-known example of this phenomenon is ocean waves that … See more Below are a number of examples of shock waves, broadly grouped with similar shock phenomena: Moving shock See more In elementary fluid mechanics utilizing ideal gases, a shock wave is treated as a discontinuity where entropy increases abruptly as the … See more Oblique shocks When analyzing shock waves in a flow field, which are still attached to the body, the shock wave … See more A shock wave may be described as the furthest point upstream of a moving object which "knows" about the approach of the object. In this … See more WebPrior to the arrival of the blast wave, the pressure is at ambient (atmospheric) pressure, P 0. On arrival of the shock front, the pressure jumps in a discontinuous fashion. ... The sharp, leading edge of the waveform defines the shock front, and can also be seen as a discontinuity in the other gas dynamic parameters (Fig. 1.3). The wave ... Web24 May 2012 · There was also a more marginal pressure pulse preceding discontinuity 2, which changed the shock geometry from quasi-parallel to quasi-perpendicular. No other pressure pulses were observed during the period depicted in Figure 5, demonstrating that pressure pulses are not simply pervasive throughout periods of quasi-parallel … most comfortable headphones phone