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 Wysłany: Pon 16:48, 08 Lis 2010 Temat postu: ugg botas Non-spherical particles fluidization - s |
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Non-spherical particles fluidization - shape the relationship between porosity and velocity of
3.2n the relationship with the ReI Yuan 3 and if the value of Tab. 3of4 female nan) anuran nan) t the flow of spherical particles settling speed or interference (suspended) faster than the free settling (floating) rate small. The same. Non-spherical particles in the flow of government interference in settling speed (suspension) faster than the free settling velocity small. Park is due to falling particles produced fluid replacement and additional increase in flow. Not only by the fluid particles in settling time and because a large number of particles but also resistance to interference by other particles, that particle deposition by the direct effect when the two brother take the role of resistance. Resistance is directly between the particles and friction between particles and wall and the resistance from the collision djI; indirect effects of resistance is the role of particle fall of fluid replacement have caused an additional increase in flow resistance. Non-spherical particles the porosity index greater than the porosity index of spherical particles. This is because of the same size of the most ill-structured spherical shape of the object, the smallest surface area. So that the flow of the particle or settlement (suspended) particles collide with each other. Collision between particles and wall surface such as a small. Reduce the chances of collision. In addition. Objects of different shapes the same size with the smallest volume of spherical particles. Therefore, displacement of fluid particles down the additional drag produced by the smallest sphere. Seen. Under the same non-spherical particle size of the porosity index n over: a large beak-shaped. Table 4.3.2.1 spherical particles and the correlation ferret Yuan 4 and Re; value of Tab. 4T Ⅶ 1mOrand, 拄 blue ball scoop of granular computing terms such as non-spherical particles scoop 4H53n adjacent m \dragonfly research also made concave ∞ ¨ ∞ kick like meow; Man milk Spanish fly Butterfly I moved canthal 42 letters Hu Lake Mine pan College in June 1993 Rg ≤ O.2n: 4.65,[link widoczny dla zalogowanych],. ': n a = 4. 35Re ~ oz, zRe500},[link widoczny dla zalogowanych], l 500n: 2.39J1949 in Lewis, 1952 年 Lewis and Bowc: rmall,[link widoczny dla zalogowanych], 1963 年 Kwauk and Wilhe / m,[link widoczny dla zalogowanych], 1963 年 Wauls et al, respectively RP n and the spherical particles were studied .3.2.2 non-spherical particles /. i and the relationship between RP Table 4 lists the formula by Richardson and Zari sphere and H, as well as on non-modified R spheres and return the value of n. 4 Nonspherical particles resistant to H n and R n and the regression calculated Re,[link widoczny dla zalogowanych], the correlation n; 5.54602Re, (16) This article from the empirical formula rg6) and R ~ hardson Ping ¨ za 】 (i of the empirical formula (15) plotted on the same graph. Figure 4. can be seen clearly void of non-spherical particles spherical particle porosity index index greater than .4 Conclusion Che from the value of non-spherical A 5546 n A chu cry I Shí Richardsoaand.tx. ~-4-.4-5.R ..&..-. D.t. .. 1 ...~.. R.e.. t-<- - 50-01OKet hiding with her is F.41relationshipofnandc 4n experiment and the above analysis, according to the discussion. In this paper, so the type of non-spherical particles characteristic of the study and calculated as follows: a. According to the screening particle diameter d,. with a shape population correction factor, a = O.9559 a O.1084d ~ j calculated the amount of blue de =. b. diameter spherical particles according to the formula by (6) (7) 0j) calculations. such as the calculation from the busy heart =. d. Re non-spherical particles with an empirical correlation for n = 5.54602Re.. calculate the porosity index of non-spherical particles REFERENCES 1 Han exhausted H. Sun and so on. fluidization - the amount of vertical lines l Pakistani ship uniform sphere and fluid movement. Beijing: Science Press, 1963.16 ~ 172Riaha.rdsonJFa ugly dzWN. $ e,: lia'aationmadF'luMi ~ tiotx.Trans' E scorpion 195,1,32 (1): 35 ~ Island 3l'ri ~ Bo.L ugly PL ¨ dEJcMe. fV ~ iadMjFl puzzle worthy of La st Ⅱ project has plkationtoC ~, xtntta'eulx'mltOgtaaiota. AIchEJ shed I.1959.) :93-994 iliac celebration management. possession of stolen two-phase theory. Beijing : Qi Du out of the metallurgical industry. 1
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