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Navier-Stokes prediction of the three dimensional flowfield of jets in a crossflow using the finite element method
(Virginia Polytechnic Institute and State University, 1988)
A Prandtl-type eddy viscosity model including the first-order effect of turbulence structure has been developed to deal with curved free-shear flows. The model is generalized to account for the effect of arbitrary cross-section ...
A finite element, Navier-Stokes study of the confined, laminar flow over a downstream facing step
(Virginia Polytechnic Institute and State University, 1984)
The two-dimensional, confined, laminar flow over a downstream facing step was studied using a finite element, Navier-Stokes equation solver. The weak form of the stationary, incompressible Navier-Stokes equations in primitive ...
Finite element solution of the Navier-Stokes equations for 3-D turbulent free shear flows
(Virginia Polytechnic Institute and State University, 1984)
A half-equation model of turbulence has been developed to described the eddy viscosity distribution of two and three-dimensional turbulent free shear flows. The model is derived by integrating the parabolized transport ...
A finite element analysis of adhesively bonded composite joints including geometric nonlinearity, nonlinear viscoelasticity, moisture diffusion and delayed failure
(Virginia Polytechnic Institute and State University, 1987)
A two-dimensional finite-element computational procedure is developed for the accurate analysis of the strains and stresses in adhesively bonded joints. The large displacements and rotations experienced by the adherends ...
Three-dimensional finite-element analysis including elastic-plastic material response
(Virginia Polytechnic Institute and State University, 1974)
The development of a linear finite-element program using an isoparametric 60-DOF hexahedron is presented. As a special feature dictated by programming considerations, the enforcement of boundary conditions and the modification ...
Finite element analyses of gravity earth retaining structures founded on soil
(Virginia Tech, 1992)
The safety of gravity earth retaining structures is usually evaluated with regard to: (1) overturning about the toe, (2) sliding along the base and (3) bearing failure of the foundation. Conventional equilibrium methods ...
Performance of Improved Ground and Reinforced Soil Structures during Earthquakes – Case Studies and Numerical Analyses
(Virginia Tech, 2003-12-12)
The 1999 Kocaeli Earthquake (M=7.4) struck northwestern Turkey on August 17, 1999 and caused significant damage in urban areas located along Izmit Bay. The sites that suffered the greatest damages were located primarily ...
Rapid Drawdown Analysis using the Finite Element Method
(Virginia Tech, 2014-04-24)
Rapid drawdown (RDD) occurs when the water level adjacent to a slope or embankment is lowered quickly after a long period of being elevated either at the normal operating level for a dam or in the case of levees, during a ...
Development of an Experimentally Validated Non-linear Viscoelastic Viscoplastic Model for a Novel Fuel Cell Membrane Material
(Virginia Tech, 2014-04-04)
The proton exchange membrane (PEM) is a key component in proton exchange membrane fuel cells (PEMFCs). During standard fuel cell operation, the PEM degrades due to cyclic hygrothermal loads, resulting in performance loss ...
Compression After Impact Experiments and Analysis on Honeycomb Core Sandwich Panels with Thin Facesheets
(Virginia Tech, 2011-05-27)
A better understanding of the effect of impact damage on composite structures is necessary to give the engineer an ability to design safe, efficient structures. Current composite structures suffer severe strength reduction ...