When the Reynolds number for Bingham fluid is larger than a certain value, the flow will transfer from the laminar state to the turbulent state as Newtonian flow does.

The simulation results indicate that thermorcapillary convection in encapsulated liquid bridge is axisymmetric and steady at the small Marangoni number. But when Maxangoni number exceeds some critical value, the flow will undergo a transition to three-dimensional oscillatory flow.

the flowing of credit capital from vulnerable market to advantageous market will reduce the welfare of the whole society, and enlarge the gap between these two kinds of markets, which will make the financial system much more fragile.

This text has many advantages below: studying capital account opening and economic security by the information asymmetry theory among information economics; pointing out that the serious information asymmetry is the inherent origin of the precarious international capital circulation on the international financial market now.

Based on the double-barrel equipment and the mixed model analysis, it reveals that because of remnant magnetization, the particle escaped from the magnetic poles will change the volume fraction of the medium flowing through the far-end channel.

After China joining WTO, the relations between China and other countries will be much closer and the flow of goods, capital, labor force will be much more frequent.

For sufficiently high velocities a separation of the external flow will occur in the rear portion of the drops and bubbles, which leads to the appearance of a turbulent wake and a sharp increase of the hydrodynamic resistance.

In fact, in the case of inclined incidence the flow will tend to turn in the direction of least resistance, i.e., perpendicular to the layer.

Thereby, if the heat released by condensation of water vapour exceeds a certain quantity, the flow will become unstable and periodic flow oscillations of the unsteady condensation shock wave will occur.

It is shown that the flow will blow up in a finite time if the mean curvature of the initial surface is larger than some constant depending on the boundness of derivatives of the external force field.

Else, when radii ratio keeps unchanged, the shear stress of inner wall of annular flow will change with the inner radius compared with the general pipe flow and is always smaller than that of the outer wall.

In the present work the breakdown of an isolated axisymmetric vortex embedded in an unbounded uniform flow is examined by numerical integration of the complete Navier-Stokes equations for unsteady axisymmetric flow.The results show that if the vortex strength is small,the solution approaches a steady flow and the vortex is stable and that if this strength is large enough,the solution remains unsteady and a recirculating zone will appear near the axis,its form and internal structure resembling those of the axisymmetric...

In the present work the breakdown of an isolated axisymmetric vortex embedded in an unbounded uniform flow is examined by numerical integration of the complete Navier-Stokes equations for unsteady axisymmetric flow.The results show that if the vortex strength is small,the solution approaches a steady flow and the vortex is stable and that if this strength is large enough,the solution remains unsteady and a recirculating zone will appear near the axis,its form and internal structure resembling those of the axisymmetric breakdown bubbles with multi-cells observed by Faler and Leibovich (1978).For appropriate combinations of flow parameters the flow reveals quasi-periodicity.Parallel calculations with the quasi-cylindrical approximation indicate that so far as predicting of breakdown is concerned,its results coincide quite well with the results mentioned above.They both show that the vortex breakdown has little concern with the Reynolds number or with the critical classification of the upstream flow,at least for the lower range of Reynolds numbers covered by the calculations of this work.

It is shown that the Huanghai Sea is one of areas favorable for the formation of continental shelf front. By the satellite image as well as CTD data in July, 1984, the continental shelf front in the Southern Huanghai Sea are studied. From a satellite infrared image from NOAA-7 in 15 July, 1984, one can clearly see the positions of shelf fronts off the Subei (Northern Jiangsu) Shoal and other regions such as along coasts of the Shandong Peninsula and Korea. The distribution of SST from satellite is very similar...

It is shown that the Huanghai Sea is one of areas favorable for the formation of continental shelf front. By the satellite image as well as CTD data in July, 1984, the continental shelf front in the Southern Huanghai Sea are studied. From a satellite infrared image from NOAA-7 in 15 July, 1984, one can clearly see the positions of shelf fronts off the Subei (Northern Jiangsu) Shoal and other regions such as along coasts of the Shandong Peninsula and Korea. The distribution of SST from satellite is very similar to that from CTD. The locations of fronts defined by satellite image and CTD data very much close to that of critical stratification parameter 1.8, which was obtained earlier by author.The section distributions of T, S, t and dissolved oxygen an the Southern /Huanghai Sea show that the western part of the sections is vertically homogenous and the eastern part (near the central part of the Huanghai Sea) is stratified. Between these two parts a shelf front can be identified. From the section distributions it is also shown that the deep water can rise to near surface in the front area. Because of this rising a cold water zone with the low temperature, high salinity, high dissolved oxygen and high t is formed in the boundary (or front) of the HCWM at surface and 10 m layers. The extreme values of them in the zone almost approach to typical values of the HCWM. As opposed to these, in the central part of the HCWM the surface temperature is very high and surface salinity and dissolved oxygen is very low and the thickness of up-mixing layer is much thicker than that of front areas. From these facts it is reasonable to say that the main upwelling areas are in the boundary of the HCWM, not in its central part in the Huanghai Sea as some people had mentioned.In, this paper the path of the Huanghai Coastal Current is also discussed. Dynamical calculation which is in accord with measured current shows that in the front areas the geostro-phic current is very strong. The distributions of transmission at bottom also show that a strong stream flows to south along the boundary of the HCWM in the Southern Huanghai Sea. Since in the western part of the Southern Huanghai Sea no other strong current can be observed, we can say with more assurence that the Huanghai Coastal Current is a jet southward along the boundary of the HCWM in summer.

A simplified mathematical model of two-dimensional axisymmetrical flow driven by surface tension gradient due to heat transfer within a volatile liquid droplet which is evaporating on a horizontal plate is presented. Parameters on which the flow in the droplet depend mainly are Biot number and Marangoni number. The flow fields and temperature profiles within the droplet are evaluated numerically with vorticity-stream function method. The results show that as the Bi and Ma increase gradually, the flow in the...

A simplified mathematical model of two-dimensional axisymmetrical flow driven by surface tension gradient due to heat transfer within a volatile liquid droplet which is evaporating on a horizontal plate is presented. Parameters on which the flow in the droplet depend mainly are Biot number and Marangoni number. The flow fields and temperature profiles within the droplet are evaluated numerically with vorticity-stream function method. The results show that as the Bi and Ma increase gradually, the flow in the droplet will turn from round flow in same direction into several roll-cell flows. The conditions and mechanisms causing roll cell flows in the droplet and the characteristics of roll cell flow are analysed in detail.