A Mass Conservative Finite Element Numerical Code For Three Dimensional Flows
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A Mass Conservative Finite Element Numerical Code For Three Dimensional Flows
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Author : Gaurav Savant
language : en
Publisher:
Release Date : 2017
A Mass Conservative Finite Element Numerical Code For Three Dimensional Flows written by Gaurav Savant and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Finite element method categories.
Modeling Of Three Dimensional Viscoelastic Flows With Free Surfaces Using A Finite Element Method
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Author : David Joseph Adrian
language : en
Publisher:
Release Date : 2010
Modeling Of Three Dimensional Viscoelastic Flows With Free Surfaces Using A Finite Element Method written by David Joseph Adrian and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
A framework and code have been developed to simulate fiber and film processes; the code can handle three-dimensional, isothermal, incompressible, creeping flow of a Giesekus fluid with free surfaces at infinite capillary number. The code is an extension of the parallel methods developed by Caola et al. from two- to three-dimensional flows, a restructured and improved version of the three-dimensional code of Phillips based on the subproblem formulation. The free surface motion used is an extension of the axially-constrained finite difference method of Phillips from two to three dimensions; internal domain deformation is upgraded from an elliptic mapping technique, only suitable for two-dimensional geometries, to the treatment of the domain as a fictitious elastic solid that conforms to the free surface, similar to the methods of Cairncross et al. The verification of the code and its utility are tested against the ability to capture experimental behavior in a set of benchmark problems which benefit from its ability to compute fully three-dimensional flow fields. Fluids with a nonzero second normal stress difference in simple shear flow, such as Giesekus fluids, exhibit secondary flows in non-circular, non-annular pipes. The code predicts the fully-developed three-dimensional velocity field in flow of a square duct in agreement with Yue et al. Elastically-driven flow transitions from a two-dimensional, steady flow to a three-dimensional, time periodic flow also motivate the need for three-dimensional solvers, which should be able to capture the onset directly. Flow around a closely-spaced linear periodic array of cylinders in a rectangular channel, a flow studied experimentally by Liu, exhibits this kind of flow transition. Numerical simulations have been conducted in this geometry with the Oldroyd-B model, [beta] = 0.67, wall separation distances between 4-32 radii, and Deborah number 0.1
Finite Element Simulation Of Simple Three Dimensional Fully Cavitating Flows
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Author : Peter Y. Ko
language : en
Publisher:
Release Date : 1979
Finite Element Simulation Of Simple Three Dimensional Fully Cavitating Flows written by Peter Y. Ko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Cavitation categories.
Based on potential flow theory, a formulation is given for three-dimensional fully cavitating flow with a Riabouchinsky model. The model is nonlinear and the location of the free surface of the cavity is not known priori. Therefore, an iterative procedure is used to locate the free surface boundary. The employment of a trial-free-boundary approach effectively reduces the fully nonlinear model to a linear one, and the solution at each iteration is obtained by means of the finite element method (FEM). Examples studied were fully cavitating flow past flat plates in a water tunnel. Results are given for pure drag flows past circular and elliptic plates and a lifting flow past a circular plate. Because of the change in flow boundary conditions at the separation edge and the failure of the FEM to resolve these conditions accurately, the ability of the numerical solution to maintain a constant pressure over the entire cavity decreases as the three dimensionality of the free surface increases. However, the present procedure produces absolutely stable iterations and shows no sign of drifting of the free surface. It is found that satisfaction of a tangent separation condition of the free surface from the flat plate body is crucial for the stability of the iterative procedure. Grid refinement in both the streamwise and transverse directions reduces the computational error. While free surface movement between iterations is a useful convergence criterion, a flow-rate balance between upstream and downstream cross-sections appears not to be a good criterion.
Finite Elements In Fluids Viscous Flow And Hydrodynamics
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Author : Richard H. Gallagher
language : en
Publisher:
Release Date : 1975
Finite Elements In Fluids Viscous Flow And Hydrodynamics written by Richard H. Gallagher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Science categories.
Three Dimensional Mass Conserving Elements For Compressible Flows
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Author : George Fix
language : en
Publisher:
Release Date : 1985
Three Dimensional Mass Conserving Elements For Compressible Flows written by George Fix and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
A Three Dimensional Finite Volume Eulerian Lagrangian Localized Adjoint Method Ellam For Solute Transport Modeling
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Author :
language : en
Publisher:
Release Date : 2000
A Three Dimensional Finite Volume Eulerian Lagrangian Localized Adjoint Method Ellam For Solute Transport Modeling written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Groundwater categories.
Least Squares Finite Element Solutions For Three Dimensional Backward Facing Step Flow
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Author :
language : en
Publisher:
Release Date : 1993
Least Squares Finite Element Solutions For Three Dimensional Backward Facing Step Flow written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Least Squares Finite Element Solutions For Three Dimensional Backward Facing Step Flow
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Author : Bo-Nan Jiang
language : en
Publisher:
Release Date : 1993
Least Squares Finite Element Solutions For Three Dimensional Backward Facing Step Flow written by Bo-Nan Jiang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Finite element method categories.
Numerical Prediction Of Three Dimensional Juncture Region Flow Using The Parabolic Navier Stokes Equations
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Author :
language : en
Publisher:
Release Date : 1979
Numerical Prediction Of Three Dimensional Juncture Region Flow Using The Parabolic Navier Stokes Equations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
Finite Element Methods For Fluids
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Author : Olivier Pironneau
language : en
Publisher:
Release Date : 1989
Finite Element Methods For Fluids written by Olivier Pironneau and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Mathematics categories.
Introduces the formulation of problems in fuild mechanics and dynamics, and shows how they can be analyzed and resolved using finite element methods. This practical book also discusses the equations of fluid mechanics and investigates the problems to which these equations can be applied, as well as how they can be analyzed and solved. Contains illustrations of computer simulations using the methods described in the book and features numerous illustrations.