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Showing 1 to 16 of 16 for “"incompressible fluids"”.
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Toward a Theory of Homogeneous, Isotropic Turbulence of Incompressible Fluids
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2012-02-27T21:15:16Z No. of bitstreams: 1 1971_nakano.pdf: 4067448 bytes, checksum: d794ce2ec32b3ac96c8660b08b8e878a (MD5)
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Passive Scalar Transport by Non-Smooth Incompressible Fluids: Mixing and Vanishing Viscosity
This thesis explores fundamental questions in fluid dynamics through rigorous mathematical analysis of the passive scalar transport model. Our investigation centers on the behaviour of fluid flows characterised by vector fields of lower regularity—a crucial feature in understanding turbulent …
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A penalty finite element model for axisymmetric flows of power-law and white-metzner fluids
… governing unsteady axisymmetric flows of viscous incompressible fluids obeying power-law and White-Metzner constitutive relations is developed. The formulation accounts for inertial (or convective) terms. For power-law fluids, two different finite element models are developed: one based on the …
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Modeling Outdoor Air Pollution and the Urban Form
… transient solver for buoyant, turbulent flow of incompressible fluids, with Reynolds Averaged Navier-Stokes (RANS) turbulence modeling. It then demonstrates that this solver can be applied to cases, such as that of an urban canyon, with geometry generated parametrically using Grasshopper, a …
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CFD modelling of fluid flow and contaminant transport in hydrogeological systems
… in response to infiltration of compressible or incompressible fluids. For solute transport problems, investigations of spatial distribution of solute species in homogeneous/layered heterogeneous systems are undertaken by accounting for chemical, geochemical and biological reactions caused by …
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Enhanced Constitutive Theories for Classical Thermoviscoelastic Polymeric Fluids
… constitutive theories for thermoviscoelastic fluids based on classical continuum mechanics (CCM). We refer to these fluids as classical thermoviscoelastic polymeric fluids. The conservation and balance laws of CCM constitute the core of the mathematical model. Constitutive theories for the …
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Algoritmo numérico para projeto de sistemas hidráulicos
… at the development of a algorithm within the Fluids Mechanical area to the computational installations and hydraulic systems design. It mainly consists of the development of a method of hydraulic systems design compatible to the use of computational methods connected with the design variation …
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Some aspects of magnetohydrodynamics
… of the motion of electrically conducting fluids with magnetic fields. Such phenomena, the study of which is usually known as Magnetohydrodynamics (MHD), occur on a galactic, planetary or laboratory length scale; however in this thesis we concentrate on those phenomena which can be …
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Laminar fluid flow, particle transport and permeate flux behavior in crossflow membrane filters
… for the laminar, isothermal single phase flow of incompressible fluids in channels having porous boundaries. Results from a finite difference solution to the vorticity-stream function formulation of the Navier-Stokes equations are compared with previously reported perturbation, asymptotic, …
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A Class of Stable, Efficient Navier-Stokes Solvers
… equations (NSE) or Stokes equations (SE) for incompressible fluids in a bounded domain with given boundary value of velocity. The incompressibility constraint and non-slip boundary condition have made this problem very challenging. Their treatment by finite element method leads to the …
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A molecular theory of the Stokes-Einstein relationship
… treating the liquid as a continuous incompressible medium, the diffusing molecule as a macroscopic body and applying boundary conditions to specify their interaction. Whilst the form of this relationship is preserved in the experimental findings, the detailed dependence on the shape …
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Gas forces during the rapid opening of disc valves
… the work by Chan on the behaviour of inviscid incompressible fluids, a computer program has been developed for the steady continuous flow condition of the disc valves under study. This program is based on two-dimensional or axisymmetric potential fluid flow and uses the Finite Element method. …
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Nonlinear long-wave interfacial stability of two-layer gas-liquid flow
The flow of two immiscible viscous fluids in a thin inclined channel is considered, in either a cocurrent or countercurrent regime. Following the air-water case, which is found in a variety of engineering systems, we allow the upper fluid to be either compressible or incompressible. The disparity …
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A variational framework for multi-scale defect modeling in strained electronics and processing of composite materials
… allowing for modeling adjacent compressible-incompressible fluids within a unified formulation. Coupled with the thermal evolution within the constituents of the material and accounting for phase change and mass leading to mass transfer across the interface the materials, kinetic evolution of …
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Stability of rigid and deformable roll coating flows
… flows. Consideration is restricted to Newtonian, incompressible fluids in the absence of inertia. In each coating flow analysed the steady two dimensional base state solutions of the system axe explored before the stability of the system is considered. The particular rigid roll coating flow that …
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Fully nonlinear interfacial waves in a bounded two-fluid system
… flow which results when two immiscible inviscid incompressible fluids of different densities and separated by an interface which is free to move and which supports surface tension, are caused to flow in a straight infinite channel. Gravity is taken into consideration and the velocities of each …