Citation
Tam, Christopher KwongWah (1966) On the transport properties of fluidparticle flow. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:10262015101523465
Abstract
The hydrodynamic forces acting on a solid particle in a viscous, incompressible fluid medium at low Reynolds number flow is investigated mathematically as a prerequisite to the understanding of transport processes in twophase flow involving solid particles and fluid. Viscous interaction between a small number of spherical particles and continuous solid boundaries as well as fluid interface are analyzed under a “pointforce” approximation. Nonspherical and elastic spherical particles in a simple shear flow area are then considered. Nonsteady motion of a spherical particle is briefly touched upon to illustrate the transient effect of particle motion.
A macroscopic continuum description of particlefluid flow is formulated in terms of spatial averages yielding a set of particle continuum and bulk fluid equations. Phenomenological formulas describing the transport processes in a fluid medium are extended to cases where the volume concentration of solid particles is sufficiently high to exert an important influence. Hydrodynamic forces acting on a spherical solid particle in such a system, e.g. drag, torque, rotational coupling force, and viscous collision force between streams of different sized particles moving relative to each other are obtained. Phenomenological constants, such as the shear viscosity coefficient, and the diffusion coefficient of the bulk fluid, are found as a function of the material properties of the constituents of the twophase system and the volume concentration of solid. For transient heat conduction phenomena, it is found that the introduction of a complex conductivity for the bulk fluid permits a simple mathematical description of this otherwise complicated process. The rate of heat transfer between particle continuum and bulk fluid is also investigated by means of an Oseentype approximation to the energy equation.
Item Type:  Thesis (Dissertation (Ph.D.))  

Subject Keywords:  Applied Mechanics  
Degree Grantor:  California Institute of Technology  
Division:  Engineering and Applied Science  
Major Option:  Applied Mechanics  
Thesis Availability:  Public (worldwide access)  
Research Advisor(s): 
 
Thesis Committee: 
 
Defense Date:  28 April 1966  
Funders: 
 
Record Number:  CaltechTHESIS:10262015101523465  
Persistent URL:  http://resolver.caltech.edu/CaltechTHESIS:10262015101523465  
Default Usage Policy:  No commercial reproduction, distribution, display or performance rights in this work are provided.  
ID Code:  9246  
Collection:  CaltechTHESIS  
Deposited By:  Leslie Granillo  
Deposited On:  27 Oct 2015 17:24  
Last Modified:  27 Oct 2015 17:24 
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