Particle granular temperature of Geldart A, A/B and B particles in dense gas-fluidized beds
Particle granular temperature of Geldart A, A/B and B particles in dense gas-fluidized beds
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致密气体流化床中 Geldart A、A/B 和 B 颗粒的颗粒颗粒温度
DOI：
10.1016/j.ces.2013.04.028
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发表时间：
2013-06
影响因子：
4.7
通讯作者：
Kuipers, J. A. M.
中科院分区：
文献类型：
--
作者：
Wang, Junwu;van der Hoef, M. A.;Kuipers, J. A. M.
由于Geldart A和B颗粒边界具有很大的实用意义，人们对其进行了广泛的研究，但对于跨越A/B边界时的水动力特性仍缺乏共识。在广泛的离散粒子模拟的基础上，当A/B边界被越过时，颗粒温度作为表观气体速度的函数的性质似乎没有显著变化，这表明从Geldart A粒子到Geldart B粒子的平稳过渡，这与一些实验研究一致(Geldart，D.，1973)。粉末技术公司。7,285-292；格雷斯，J.R.，1986。能。J·化学。英语。，353-363；勒索斯等人，2002年。化学。英语。SCI。57,5123-5141)，但不同意声学散粒噪声(ASN)研究(Cody等人，1996)。粉末技术公司。87,211-232；和Cody等人，2008年。粉末技术公司。182、146-170)。最后，我们指出，目前的DPM研究结果与ASN研究结果之间的不一致可能归因于ASN测量中表观气速范围较短和/或反应器尺寸的影响。考虑到DPM方法和ASN技术可能存在的各种不确定性源，在确定Geldart A/B颗粒越过边界时稠密气态沸腾床水动力特性的性质之前，还需要做大量的工作。
Extensive studies have been devoted to the boundary of Geldart A and B particles due to its great practical relevance, however, consensus on the hydrodynamic characteristics when the A/B boundary is crossed is still lacking. On the basis of extensive discrete particle simulations, it seems that there is no dramatic change with respect to the nature of granular temperature as a function of superficial gas velocity when the A/B boundary is crossed, suggesting a smooth transition from Geldart A particles to Geldart B particles, which is in agreement with some of the experimental studies (Geldart, D., 1973. Powder Technol. 7, 285–292; Grace, J.R., 1986. Can. J. Chem. Eng. 64, 353–363; Loezos et al., 2002. Chem. Eng. Sci. 57, 5123–5141), but disagrees with acoustic shot noise (ASN) studies (Cody et al., 1996. Powder Technol. 87, 211-232; and Cody et al., 2008. Powder Technol. 182, 146-170). Finally, we show that the disagreement between the results obtained from present DPM studies and ASN studies may possibly be attributed to the short range of superficial gas velocity in ASN measurement and/or the effect of the reactor size. In view of the various possible sources of uncertainty related to both DPM method and ASN technique, lot of works are needed before making a definite conclusion on the nature of hydrodynamic characteristics of dense gas-fluidized beds when the boundary of Geldart A/B particles was crossed.
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影响因子：
3.7
作者：
C. Campbell;David G. Wang
通讯作者：
C. Campbell;David G. Wang
影响因子：
4.7
作者：
Junwu Wang;van der M.A. Hoef;J. Kuipers
通讯作者：
Junwu Wang;van der M.A. Hoef;J. Kuipers
影响因子：
5.2
作者：
V. Zivkovic;M. Biggs;D. Glass;Liansong Xie
通讯作者：
V. Zivkovic;M. Biggs;D. Glass;Liansong Xie
影响因子：
1.8
作者：
Liansong Xie;M. Biggs;D. Glass;A. S. McLeod;S. Egelhaaf;G. Petekidis
通讯作者：
Liansong Xie;M. Biggs;D. Glass;A. S. McLeod;S. Egelhaaf;G. Petekidis
影响因子：
5.2
作者：
Gidaspow, D;Jung, JW;Singh, RK
通讯作者：
Singh, RK