Fully developed and transient concentration profiles of particulate suspensions sheared in a cylindrical Couette cell
Fully developed and transient concentration profiles of particulate suspensions sheared in a cylindrical Couette cell
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在圆柱形库埃特池中剪切的颗粒悬浮液的完全开发和瞬时浓度分布
DOI:
10.1017/jfm.2018.982
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发表时间:
2019
影响因子:
3.7
通讯作者:
Hormozi, Sarah
中科院分区:
文献类型:
--
作者:
Sarabian, Mohammad;Firouznia, Mohammadhossein;Metzger, Bloen;Hormozi, Sarah
We experimentally investigate particle migration in a non-Brownian suspension sheared in a Taylor–Couette configuration and in the limit of vanishing Reynolds number. Highly resolved index-matching techniques are used to measure the local particulate volume fraction. In this wide-gap Taylor–Couette configuration, we find that for a large range of bulk volume fraction, , the fully developed concentration profiles are well predicted by the suspension balance model of Nott & Brady (J. Fluid Mech., vol. 275, 1994, pp. 157–199). Moreover, we provide systematic measurements of the migration strain scale and of the migration amplitude which highlight the limits of the suspension balance model predictions.
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