搜索结果: 1-15 共查到“工学 viscoelastic”相关记录20条 . 查询时间(0.052 秒)
Viscoelastic Flow through Contraction Geometries
Viscoelastic Flow Contraction Geometries
2014/10/23
Contraction flow of visco elastic fluids has b een a b enchmark problem in nonNewtonian fluid mechanics b ecause it mimics flows o ccurring in a numb er of industrial applications. It is also of consi...
A numerical study of heat and mass transfer effects on an oscilaltory flow of a viscoelastic fluid with thermal relaxation
Finite difference method Oscillatory flow Heat transfer and Mass transfer
2010/11/25
We have studied numerically effect of heat and mass transfer on an oscillatory flow of a viscoelastic fluid with thermal relaxation. The dimensionless governing equations are solved using an explicit ...
Effect of Material Parameters on Rate-Type Constitutive Equations in Accelerated Flow of Viscoelastic Fluids
Viscoelastic fluids Constitutive equations Accelerated flow Runge-Kutta
2009/10/14
The effect of material parameters on three rate-type constitutive equations (White-Metzner, Oldroyd 3-constant and Kopac-Arkol) used successfully according to the literature was investigated. The fl...
MOISTURE INTRUSION IN VISCOELASTIC POROUS MEDIA: INDUCED-STRESS AND DEFORMATION
moisture intrusion moisture content stress
2009/10/14
Porous media exposed to humid air absorb moisture which can lead to extensive internal damage and failure. In this paper, we analyze numerically the influence of the moisture intrusion in a two-layer ...
Evaluation of a Modified Jeffreys Type Model for Viscoelastic Fluids
Viscoelastic fluids Nonlinear regression Numerical simulations Constitutive equations
2009/10/14
In this study using some existing constitutive equations, a modi ed Je reys type model with retardation time is developed which is successful with the experimental data for simple shear flow and shear...
INSTABILITY OF TWO ROTATING VISCOELASTIC (WALTERS B') SUPERPOSED FLUIDS WITH SUSPENDED PARTICLES IN POROUS MEDIUM
Rayleigh-Taylor instability Walters B viscoelastic fluid suspended particles
2009/10/14
The instability of the plane interface between two Walters B/ viscoelastic superposed fluids permeated with suspended particles and uniform rotation in porous medium is considered following the linear...
STABILITY OF TWO SUPERPOSED VISCOUS-VISCOELASTIC FLUIDS
Rayleigh-Taylor instability normal mode technique linearized theory
2009/10/13
The Rayleigh-Taylor instability of a Newtonian viscous fluid overlying a Rivlin-Ericksen viscoelastic fluid is considered. Upon application of normal mode technique, the dispersion relation is obtaine...
THERMAL INSTABILITY OF WALTERS B' VISCOELASTIC FLUID PERMEATED WITH SUSPENDED PARTICLES IN HYDROMAGNETICS
Walters B viscoelastic fluid thermal instability suspended particles
2009/10/13
The effect of suspended particles on the thermal instability of Walters B? viscoelastic fluid in hydromagnetics in porous medium is considered. For stationary convection, Walters B? viscoelastic fluid...
Viscoelastic Behaviour of Composite Piles Used in the Construction of Quays
Pile Creep Shrinkage Numerical analysis Strain Stress
2009/10/12
The purpose of this study was to investigate the viscoelastic behaviour of a concrete- lled steel tube pile with circular section used in quay constructions under long-term steady load. Deformations t...
Steady Flow of a Walter's B' Viscoelastic Fluid between a Porous Elliptic Plate and the Ground
Walter's viscoelastic fluid Porous elliptic plate Lift and drag
2009/10/12
Steady three-dimensional flow of a Walter's B' viscoelastic fluid between a porous elliptic plate and the ground was considered. From a practical point of view, this problem corresponds to fluid-cushi...
Viscous Heating Effects in Viscoelastic Flow between Rotating Parallel-Disks
Polymeric (Viscoelastic) fluid Parallel-Disks Rheometry Nonisothermal
2009/10/12
Viscoelastic flow between two rotating parallel-disks (plates) is studied. First the current state of the art is discussed and the limitations resulting from the simple flow assumptions are reported. ...
粘弹性悬架阻尼缓冲件温度场特性（Characteristics of Temperature Field on Damping Buffers for Viscoelastic Suspensions）
履带车辆 悬架 缓冲件 温度场
2010/4/1
对履带式车辆典型工况下的粘弹性悬架阻尼缓冲件的温度场进行分析。不考虑材料参数的温度相关性，对结构-温度的耦合场进行单向解耦；将结构分析的结果作为温度分析的条件，同时对温度模型施加边界条件。橡胶受载时为非线性大变形，使用有限元方法获得数值解。求解得到典型工况下局部过热点的位置和温度值，得到温度与影响因素的关系曲线，并进行公式拟合。分析结果可为粘弹性悬架阻尼缓冲件的结构优化提供参数。 The temp...
Viscoelastic Properties of Porcine Serum-Myosin Gel and the Sausage Fortified by Porcine Serum
charcoal treatment porcine serum egg white gel
2009/6/18
Heat-induced gels of charcoal-treated, freeze-dried porcine serum fortified by chicken myosin solution (2.5%, w/w), as well as pork sausage fortified by the serum, were analyzed in terms of their rheo...
Determination of the Viscoelastic Properties of Apple Flesh under Quasi-Static Compression Based on Finite Element Method Optimization
apple flesh compression stress relaxation FEM optimization
2009/5/8
A procedure for determining the viscoelastic properties of apple flesh has been proposed based on compression tests and FEM optimization. Short-term simple compression tests and long-term relaxation t...
Numerical Analysis of Flow Behavior in Meniscus Region of Viscoelastic Dip Coating Flows
dip coating flow viscoelastic fluid numerical simulation Phan-Thien Tanner model meniscus
2009/5/8
Flow behavior in a meniscus region in viscoelastic dip coating flows was numerically analyzed using a finite element method. The Phan-Thien Tanner (PTT) model was used as a constitutive equation. Th...