A FURTHER DISCUSSION ON BASIC EQUATIONS FOR 2-PHASE FLOW - ON COLLISION STRESS OF SOLID-PHASE

Authors
Citation
Dy. Liu, A FURTHER DISCUSSION ON BASIC EQUATIONS FOR 2-PHASE FLOW - ON COLLISION STRESS OF SOLID-PHASE, Science in China. Series A, Mathematics, Physics, Astronomy & Technological Sciences, 41(2), 1998, pp. 216-224
Citations number
7
Categorie Soggetti
Multidisciplinary Sciences
ISSN journal
10016511
Volume
41
Issue
2
Year of publication
1998
Pages
216 - 224
Database
ISI
SICI code
1001-6511(1998)41:2<216:AFDOBE>2.0.ZU;2-D
Abstract
The following points are argued: (i) there are two independent kinds o f interaction on interfaces, i.e. the interaction between phases and t he collision interaction, and the jump relations on interfaces can acc ordingly be resolved; (ii) the stress in a particle can also be divide d into background stress and collision stress corresponding to the two kinds of interaction on interfaces respectively; (iii) the collision stress, in fact, has no jump on interface, so the averaged value oi it s derivative is equal to the derivative of its averaged value; (iv) th e stress of solid phase in the basic equations for two-phase flow shou ld include the collision stress, while the stress in the expression of the inter-phase force contains the background one only. Based on the arguments, the strict method for deriving the equations for two-phase now developed by Drew, Ishii et al. is generalized to the dense two-ph ase flow, which involves the effect of collision stress.