A Steady-State Model of a Floating Ring Bearing, Including Thermal Effects

1992 ◽  
Vol 114 (1) ◽  
pp. 141-149 ◽  
Author(s):  
D. M. Clarke ◽  
C. Fall ◽  
G. N. Hayden ◽  
T. S. Wilkinson
Keyword(s):  
Mass Transfer ◽  
Steady State ◽  
Numerical Solution ◽  
Heat And Mass Transfer ◽  
Thermal Effects ◽  
State Model ◽  
Steady State Model ◽  
Lubricant Films ◽  
Energy Equations

A steady-state model of a conventional floating ring bearing is presented, specifically, to assess the feasibility of its use in the power generating industry. It necessitates the numerical solution of the Reynolds and energy equations for both inner and outer lubricant films. Oil recirculation and heat and mass transfer between the films are included. For the application considered, the oil temperatures and eccentricity ratios encountered are not excessive.

Comparison of the DESSIM Model With a Finite Difference Solution for Rotary Desiccant Dehumidifiers

1989 ◽  
Vol 111 (4) ◽  
pp. 286-291 ◽  
Author(s):  
K. J. Schultz ◽  
J. W. Mitchell
Keyword(s):  
Mass Transfer ◽  
Steady State ◽  
Finite Difference ◽  
Heat And Mass Transfer ◽  
State Model ◽  
Analysis Tool ◽  
Simple Analysis ◽  
Steady State Model ◽  
Finite Difference Solution ◽  
Difference Solution

A heuristic “pseudo-steady-state” model of the heat and mass transfer occurring in desiccant dehumidifiers, embodied in the program DESSIM, has been proposed as a conceptually and numerically simple analysis tool (Barlow, 1982). A comparison is made with a finite difference solution to determine the accuracy and limitations of the pseudo-steady-state model. The comparison indicates that the pseudo-steady-state model can produce accurate results of dehumidifier performance relative to the finite difference solution when used carefully, although at greater computational expense. Substitution of the finite difference solution into the overall DESSIM program results in a potentially accurate and useful analysis tool.

Steady state model for evaluation of external and internal mass transfer effects in an immobilized biofilm

2008 ◽  
Vol 99 (9) ◽  
pp. 3468-3474 ◽  
Author(s):  
Sandeep Mudliar ◽  
Saumita Banerjee ◽  
Atul Vaidya ◽  
Sukumar Devotta
Keyword(s):  
Mass Transfer ◽  
Steady State ◽  
State Model ◽  
Internal Mass ◽  
Transfer Effects ◽  
Internal Mass Transfer ◽  
Steady State Model

Coupled Thermo-Flowing 3D Steady State Model of Friction Stir Welding Process

2013 ◽  
Vol 470 ◽  
pp. 325-329 ◽  
Author(s):  
Jun Hua Cui ◽  
Wei Xu ◽  
Zheng Hua Guo
Keyword(s):  
Steady State ◽  
Friction Stir Welding ◽  
Welding Process ◽  
State Model ◽  
Analysis Software ◽  
Friction Stir ◽  
Steady State Model ◽  
Model Of Friction ◽  
Energy Equations ◽  
The Impact

The coupled thermo-flowing 3D steady-state model of friction stir welding model is established based on fluid mechanics. With analyzing the impact of pin shoulder and pin on heat producing, the model considers the influence of pin on the heat producing processing. The model applies viscoplastic constitutive equations to describe the material, and turbulence model to simulate the material flowing behavior. With the additional turbulence kinetic energy equations and flow boundary condition equations, the model is established. With Comsol Multiphysics finite analysis software, a process simulation was carried out, and the results reflect that the model can reveal the steady state characteristics of thermo and material flowing behavior of friction stir welding.

A Steady-State Model of Mass Transfer for Removing Cryoprotective Agents From Cryopreserved Blood With Hollow Fiber Modules

2008 ◽  
Author(s):  
Weiping Ding ◽  
Zhiquan Shu ◽  
Xiaoming Zhou ◽  
Xianjiang Kang ◽  
Dayong Gao
Keyword(s):  
Mass Transfer ◽  
Steady State ◽  
Cell Volume ◽  
Hollow Fiber ◽  
State Model ◽  
Model Coupling ◽  
Cryoprotective Agents ◽  
Removal Process ◽  
Steady State Model ◽  
Volume Response

A steady-state model coupling mass transfer across cell and fiber membranes is theoretically developed to investigate the removal process of cryoprotective agents (CPAs) from cryopreserved blood with hollow fiber modules, and then CPA concentration variation and cell volume response are studied.

Simulation of volumetric heating of a moist medium with allowance for fluid mobility

2012 ◽  
Vol 9 (1) ◽  
pp. 91-93
Author(s):  
U.R. Ilyasov ◽  
A.V. Dolgushev
Keyword(s):  
Mass Transfer ◽  
Porous Medium ◽  
Numerical Solution ◽  
Heat And Mass Transfer ◽  
Transfer Process ◽  
Thermal Action ◽  
Mass Transfer Process ◽  
Low Permeability ◽  
Volumetric Heating ◽  
Drying Regime

The problem of volumetric thermal action on a moist porous medium is considered. Numerical solution, the influence of fluid mobility on the dynamics of the heat and mass transfer process is analyzed. It is established that fluid mobility leads to a softer drying regime. It is shown that in low-permeability media, the fluid can be assumed to be stationary.

Sign in / Sign up

Export Citation Format

Share Document