Multiphase flow in a roll press nip
نویسندگان
چکیده
منابع مشابه
Multiphase flow in a roll press nip
A three-phase ensemble-averaged model is developed for the flow of water and air through a deformable porous matrix. The model predicts a separation of the flow into saturated and unsaturated regions. The model is closed by proposing an experimentally-motivated heuristic elastic law which allows large-strain nonlinear behaviour to be treated in a relatively straightforward manner. The equations...
متن کاملThe Dynamics of a Roll Press Nip Albany International
The press section of a paper machine is designed to remove by mechanical means the maximum possible amount of water from a just-formed paper sheet. The paper sheet is carried by a textile fabric conveyer belt through a series of roll nips, which cause water to be transferred from the sheet to the fabric. In the most general case the problem to be considered at each press nip involves transient ...
متن کاملMulti-component Multiphase Flow
An axiomatic foundation for models of multi-component multiphase porous flow appearing ubiquitously in the engineering literature is developed. This unifies and extends various disparate and empirical formulations appearing in the literature. Constitutive restrictions are derived from an appropriate statement of the second law of thermodynamics, and the corresponding dissipation inequalities es...
متن کاملOn a Model of Multiphase Flow
We consider a hyperbolic system of three conservation laws in one space variable. The system is a model for fluid flow allowing phase transitions; in this case the state variables are the specific volume, the velocity and the mass density fraction of the vapor in the fluid. For a class of initial data having large total variation we prove the global existence of solutions to the Cauchy problem....
متن کاملA Multi - Temperature Multiphase Flow ModelB
In this paper we propose a multiphase model with nonequilibrated temperatures but with equal velocities and pressures for each species. Turbulent mixing is driven by diiusion in these equations. The closure equations are deened in part by reference to a more exact chunk mix model developed by the authors and coworkers which has separate pressures, temperatures, and velocities for each species. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: European Journal of Applied Mathematics
سال: 2002
ISSN: 0956-7925,1469-4425
DOI: 10.1017/s0956792501004636