| 词汇 | example_english_shock-wave |
| 释义 | Examples of shock waveThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. One of these aspects is the shockwave interaction with a developed turbulized layer. The experimentally obtained shockwave behaviors at initial phase are almost the same with the numerical results. We have also investigated a behavior of a plasma boundary and a shockwave in water both experimentally and numerically. The spall strength limit of matter at ultrahigh strain rates induced by laser shockwave. We have compared the numerical results of shockwave velocities with experimental data. Theoretical investigation of shockwave instability in metals. Two photodiodes measured the time difference between the main laser pulse, generating the shock wave, and the diagnostic laser producing the hologram. The presence of this shockwave results in a high drag coefficient compared with that of a pointed body with an attached nose shockwave. If a wall is placed normal to the expanding flow, a shockwave will reflect from it. As the piston continues to gain speed, the shockwave will become stronger. When it reaches the face of the piston it will again be reflected and the shockwave will return to the closed end. The shockwave is in general curved and the post-shock flow in general non-parallel. The generation of a well-formed fourth shockwave is therefore even less likely. As a result of these pressure variations, an inward facing, second shockwave exists in the spherical flow field. At a certain critical flow rate, however, the bow shockwave begins to bulge out (see figure 8c, plate 1). This shockwave loses its identity when it becomes coincident with the main reflected wave. With each oscillation the bubble attenuates by emitting vaporized material and a shockwave in to the surrounding liquids. This abrupt heating results from an increase in entropy due to the reflection of the shockwave after the plasma collapses at the axis. An abrupt increase in lattice compression indicates that a shockwave is generated by the pump laser irradiation. After an encounter with a shockwave, some positrons are reflected and then accelerated along the magnetic field. From this point on, the steps of the calculation are the same as for the propagation of an ordinary shockwave. This correction is valid as long as the thickness to be traversed is not so long as to dissipate the shockwave. It is essential to ensure that the planar shockwave front propagate in a steady state condition through the reference and the test material. The position of the shockwave can be easily identified. Consequently, a microscopic approach has been proposed that copes with the atomic reactions taking place due to the shockwave. It transpired that 20 patients in the shockwave group and 6 patients in the surgical group fulfilled the aforementioned terms of reference. The film is disrupted prior to the shockwave arrival. Figure 9 shows the pressure variation on a flat terrain in the shape of a pyramid when the shockwave has passed over it. As a result of these works, it has been obtained that a shockwave spreading through a turbulized layer leads to turbulent mixing intensification. Near the wall, an expansion of the plasma towards the axis without any shockwave is observed. Equation of state studies using laser driven shockwave propagation through layered foil targets. The strength and velocity of the shockwave were measured with piezoelectric pressure transducers that were flush mounted on the shock-tube walls. The material of the inner shell matter is heated to high temperatures at comparatively weak compression by the action of a strong shockwave. Specularly reflected particles at a collisionless shockwave yield a counterflow in the upstream plasma. A proper radiation hydrodynamic simulation serves as an important tool in predicting proper target thickness that will ensure a steady state shockwave propagation condition. Later, when the target material hits the sapphire window, we observe sudden shockwave heating of a small amount of material. The linear stability theory of a shockwave is fully analysed, leading to the existence of a new unstable mode (the 'strange mode'). The author therefore believes that the computations so far carried out could not have revealed the shockwave which was sought. We also present in this section the main results of simulation of a radiation-driven shockwave in a wedge-shaped aluminum foil. This shockwave moves outward and propagates in a collisional medium at a very high temperature. An interesting problem is the influence of the entropy change on the flow behind the shockwave. The second pinch is formed at 1.7 ms, when a current sheet collides with the reflected shockwave. Therefore, a closed-form solution can be obtained for the shock-wave velocity change and the entire field on the back of the shockwave. This kind of boundary condition occurs in the problem of variable piston motion behind the shockwave, when the reflected wave reaches the piston. We assume that no reflexion wave going back from the shockwave reaches this curve. This paper considers the problem of the propagation of a shockwave down a nonuniform tube. The incident shockwave is moving from right to left. Perhaps the most noticeable feature in this figure is the increase in temperature behind the main shockwave. Those generated from expanding fluid elements close behind the shockwave, are able to overtake the shock and so cause it to attentuate. By contrast, the reaction zone remains closely coupled to the shockwave in figure 4(b), indicating the successful initiation of a quasi-steady detonation. When a sphere or other bluff body travels at supersonic speeds, a shockwave is formed close to the front surface. The actual magnitude of shockwave thus becomes less severe. The generated shockwave due to beam deposition is significantly reduced and mitigated by the outer layers of the liquid jet. An essential change in the evolution of the above-described process is brought by the appearance of a shockwave. Upon the passage of the shockwave through the membrane, the membrane is ruptured and the mixing process begins. It propagated with a supersonic velocity in a quasisteady manner together with a conical shockwave inside a target. The calculation shows that radiation is nonuniformly absorbed in the plasma corona, and shockwave pressure varies in time and space. Near the axis it changes into a shockwave with strongly increasing pressure amplitude. The expansion of the igniting and burning hot gas bubble drives a shockwave. The ensuing plasma generates a shockwave to the target. The other is produced from a shockwave propagating in a solid. This was explained by introducing the competition between the incident shockwave and the upstream inter face of the bubble. When this latter situation occurs, we will say that the propagation regime of the shockwave is fully radiative. In this context, we studied the process of shockwave acceleration in a decreasing density profile. X-ray absorption in the reference and test materials leads to heating of the material before the arrival of the shockwave. In this way, it is possible to evaluate the influence of foam on shockwave propagation in solid materials. Narrow peaks in the temperature profile corresponds to the time instants when the shockwave collapses. A laser beam could be used instead of an explosive to drive a shockwave inside the cone. Experiments were conducted on a laser pumped by a cylindrical shockwave. The resulting flow patterns, displayed graphically, show very clearly how the reflected expansion wave interacts with the adjacent shockwave, gradually weakening it. This abrupt fall off in pressure may be the result of the diffraction of the incident shockwave over the gauge holder (figure 9). After assuming some shape of the shockwave, he used the steepest descent method to solve the finite difference equations. However, since a spherical shockwave attenuates with increasing distance from its source, the entropy increase imparted to the air diminishes with increasing shock radius. Optical signatures of a shockwave emerging from a metallic free surface. The shockwave arrival delay grows smoothly with the distance from the central point. The boundary conditions at a shockwave can be simplified by resolvingthe free-stream velocity into components normal and tangential to the shock. The later arrival of the third shockwave is expected for two reasons. A conical shockwave will be required to turn the main flow past this dead air region. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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