This leads to the formation of an
expansion wave, causing the gas jet to expand in the radial direction and increase the potential jet core.
Figure 11 shows the predicted results for a = 7.5[degrees], where T is time period and time reference (t = 0) is the time for radiation of an
expansion wave near the trailing edge.
The 14-X B model lower surface was designed based on the two-dimensional compressible flow (oblique shock wave relationships) and
expansion wave (Prandtl-Meyer theory), considering the simplest case, that is, no viscous flow, calorically perfect air ([gamma] = 1.4), and scramjet engine with power off [11].
Nevertheless, analysts generally believe the beachhead of the new
expansion wave will be Germany, likely in the second half of the year.
The reason why the amplitude remains a decreasing tendency in R2 area is that there is
expansion wave in the junction region (in Figure 6(a), x = 1;in Figure 6(c), x = 0) between the spherical nose and the straight cone which is caused by the surface curve discontinuity [25].
The shock wave becomes a Prandtl-Meyer
expansion wave (i.e., [M.sub.2] > [M.sub.1]) for very high values of [Re.sub.2]/[Re.sub.1].
In analyzing the
expansion wave at the nozzle outlet, the analysis must begin in the nozzle, move to the nozzle outlet, and then after the nozzle.
In the laser spallation test, strong pulse
expansion wave was produced by the pulse laser ablation of the confined silicone grease on the opposite surface of the diamond film and was utilized to cause Mode-I delamination of diamond film.
-- During the 1990s the Wal-Mart
expansion wave finally brought its brand of discounting to all 50 states, and to a few other countries as well.
Cyprus, a frontrunner for European Union membership in its next
expansion wave, is an uncharted market for independent telecoms providers.
Looking ahead, Cuti says Duane Reade will continue to ride an aggressive
expansion wave. "In 1999 we plan to capitalize on the significant foundation for growth that we built last year," he notes.
Still, it's notable that, per business historians, such departments have seen big jumps in their authority and prestige during three distinct periods in this century, and that each
expansion wave has coincided with a period of increased pressure on companies by government, unions, or both.