NUMERICAL-SIMULATION OF THE TICKING HOURGLASS

被引：10

作者：

MANGER, E

SOLBERG, T

HJERTAGER, BH

VAREIDE, D

机构：

[1] TELEMARK TECHNOL RES & DEV CTR,N-3914 PORSGRUNN,NORWAY

[2] STATOIL AS,RES CTR,N-7005 TRONDHEIM,NORWAY

来源：

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 1995年 / 21卷 / 04期

关键词：

TICKING HOURGLASS; CURVILINEAR COORDINATES; KINETIC THEORY; FLUIDIZED FLOW; OSCILLATORY FLOW;

D O I：

10.1016/0301-9322(95)00006-J

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Using a two-phase fluid flow model based on kinetic theory for granular how the oscillatory flow of sand in an hourglass first observed experimentally by Wu et al. has been simulated. The oscillations appear to be caused by the interaction between the gas pressure and the flow of sand through the orifice of the hourglass. The simulations confirm the ticking of the hourglass and the suggested mechanisms for this behaviour found experimentally by Wu et al. The simulations also show bubbles of air rising through the powder as observed experimentally.

引用

页码：561 / 567

页数：7

共 5 条

[1] Gidaspow, Multiphase Flow and Fluidization, Continuum and Kinetic Theory Descriptions, (1994)
[2] Karki, Patankar, Calculation procedure for viscous incompressible flows in complex geometries, Numer. Heat Transfer, 14, pp. 295-307, (1988)
[3] Patankar, Numerical Heat Transfer and Fluid Flow, (1980)
[4] Spalding, Computer simulation of two-phase flows with special reference to nuclear reactor systems, Computational Techniques in Heat Transfer, pp. 1-44, (1985)
[5] Wu, Maloy, Hansen, Ammi, Bideau, Why hour glasses tick, Phys. Rev. Lett., 71, pp. 1363-1366, (1993)

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