1. This increases the magnitude of the vorticity, but because of continuity also reduces the cross-section of the vortex tube.

2. Based on observation and analysis of vorticity, the flows field structure of 2-DOF tail fin propellers and the thrust formation reason are studied.

3. The study found out the mural vorticity to be very important and to have to be wellhandled otherwise the result would not be of convergence.

4. Based on theoretical analysis, inviscid Helmholtz vorticity equation is used to in paint image.

5. Based upon this equation, the theory of Slantwise Vorticity Development (SVD) proposed by Wu et al.

6. Vorticity flux through the Yucatan Channel and Loop Current variability in the Gulf of Mexico.

7. When near ground arises negative potential vorticity disturbance, precipitation also weaken.

8. The strongest vertical motion, positive vorticity and upper level divergence and low level convergence were observed in explosive developmental process of the cyclones.

9. The various terms in the potential vorticity equations have made very different contributions to the evolution of the anticyclone.

10. The vorticity transport equation is solved by the two-stage Runge-Kutta method. The velocity Poisson equation is solved by LSOR method, then the non-divergence correction scheme is done to velocity.

11. Based on the theory of isentropic potential vorticity(IPV), a diagnostic analysis of a continuous rain process in the east of Northwest China in the second ten-day of May in 2005 was carried out.

12. The recirculation zone length, contraction coefficient and vorticity as well as the variety of main flow and the intense fluctuation of recirculation zone and contraction coefficient were studied.

13. The vorticity equation was first established and the characteristics of vortex motion in two-dimensional shallow-water flows was analyzed, and then discrete vortex method (DVM) was briefly described.

14. In this paper the barotropic vorticity equation, expanded with spherical harmonics is integrated.

15. This generates ascent as well as negative vorticity source, which corresponds to a strongly anomaly anticyclone center appearing to the north of the heating region.

16. At the maintaining stage, vorticity and enstrophy of barotropic and baroclinic reach maximum when blocking has built and stayed at the blocking field.

17. While the half angle increases, velocity gradient in a microdiffuser decreases and so does the average vorticity.

18. In reality, it's the clash between warm air and cold air plus vorticity that causes storms .

19. It is shown that to the north of a heating region, although there is no diabatic heating, there still exists deep negative vorticity forcing due to the horizontal inhomogeneous in the westerly flow.

20. The upper level dry and cold air with high moist potential vorticity value was superposed to the low-level disturbance, which was advantageous to instability stratification strength and precipitation.

21. The dynamical characteristics of a cold wave in southeastern Asia during 3—8 January1983 were analysed with isentropic potential vorticity(IPV)charts.

22. A strong cold wave entering Qinghai-Xizang Plateau during 8-10 January of 1983 is analys. ed by the isentropic potential vorticity (IPV) maps.

23. Firstly, the toroidal poloidal decomposition for incompressible velocity fields is used to describe the vertical velocity, vorticity and helicity in the three dimensional atmosphere motions.

24. The development of the rainstorm and MCS were investigated with moist potential vorticity principle and slantwise vorticity development theory.

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25. As a result of actuating device, the centerline velocity distribution shows that the amplitude decreases gradually, which represents the radical characteristic of vorticity development.

26. This ratio is determined by the inherent baroclinity, static stability and absolute vorticity of the atmosphere.

27. The work is fundamental for the mathematical modelling of pulverized coal combustion , such as in the blowpipe prior to the raceway of blast furnace, by Vorticity and Stream Function...

28. The study shows that the magnetic field can change the vorticity intensity of a fire whirl, which decreases with the increase of the magnetic density.

29. The force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.