Double vortex

Flow Pattern In a cyclone the gas path involves a double vortex with the gas spiraling downward at the outside and upward at the inside. When the gas enters the cyclone, its velocity undergoes a redistribution so that me tangential component of velocity increases with decreasing radius as expressed by The spiral velocity in a... 

Figure 30. Cross-sectional view of a double-vortex spray chamber.

Vortex agitated vials Biphasic phase transfer catalysis carben addition to C-C double bondsd... 

The last equation here implies that the directions of a Beltrami field and the direction of its double rotational counterpart form an acute angle. If the A field is solenoidal, V A = 0, then Eq. (93) implies the condition A Vfc = 0 for any kind of k(r, t) function. This results in the fact that current lines and vortex lines are located on surfaces k r, t) = Ct for any given t. 

Figure 5. The double-spiral longitudinal vortex. A longitudinal vortex showing the development of toroidal countervortices. These occur on interaction with the pipe walls and have an effect similar to ball bearings, enhancing the forward movement. Their interior rotation follows the direction of rotation and forward motion of the central vortex, whereas the direction of their exterior rotation and translatory motion are reversed. These toroidal vortices act to transfer oxygen, bacteria, and other impurities to the periphery of the pipe, where, because of the accumulation of excessive oxygen, the inferior, pathogenic bacteria are destroyed and the water rendered bacteria-free.

Flow Pattern In a cyclone the gas path involves a double vortex with the gas spiraling downward at the outside and upward at the inside. When the gas enters the cyclone, its velocity undergoes a redistribution so that the tangential component of velocity increases with decreasing radius as expressed by V - rt". The spiral velocity in a cyclone may reach a value several times the average inlet-gas velocity. Theoretical considerations indicate that n should be equal to 1.0 in the absence of wall friction. Actual measurements [Shepherd and Lmple, Ind. Eng. Chem., 31, 972 (1939) 32, 1246 (1940)], however, indicate that n may range from 0.5 to 0.7 over a large portion of the cyclone... 

Add 200 1 double distilled sterile water, vortex vigorously, leave for 10 min. 

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