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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 65 for “"immersed boundary"”.
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Numerical simulation of fluid flow through porous media using the immersed boundary method
The ghost cell immersed boundary method coupled with a finite difference based Navier-Stokes solver has been developed. The flow solver is used to analyze the two-dimensional, unsteady and viscous flow at low Reynolds numbers through packings of ordered or disordered arrays of mono-, bi- and …
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Applications of an immersed boundary method on two-dimensional flows at low Reynolds numbers
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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A time-explicit immersed boundary projection method for thin elastic surfaces and stationary bodies
DSpace SAF Submission Ingestion Package generated from Vireo submission #16604 on 2021-09-16 at 17:06:38
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Development of an Immersed Boundary Method for the Simulation of Moving Bodies at Fluid-fluid Interfaces
… others. This thesis presents the development of Immersed Boundary Methods (IBMs) coupled to a two-phase incompressible flow solver. The phases are treated as immiscible, and are modelled using the Volume-of-Fluid (VOF) method. The methods developed to include the effects of surface tension and …
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A Study of Immersed Boundary Method in a Ribbed Duct for the Internal Cooling of Turbine Blades
In this dissertation, Immersed Boundary Method (IBM) is evaluated in ribbed duct geometries to show the potential of simulating complex geometry with a simple structured grid. IBM is first investigated in well-accepted benchmark cases: channel flow and pipe flow with circular cross-section. IBM …
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Strongly-Coupled Conjugate Heat Transfer Investigation of Internal Cooling of Turbine Blades using the Immersed Boundary Method
… developed flow assumption using LES with the immersed boundary method (IBM-LES-CHT). The IBM with the LES model (IBM-LES) and the IBM with CHT boundary condition (IBM-CHT) frameworks are validated prior to the main simulations by simulating purely convective heat transfer (iso-flux) in the …
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Implementation of the phase field method with the Immersed Boundary Method for application to wave energy converters
… development is then coupled with the present Immersed Boundary Module which is used to simulate the presence of moving bodies and again verified against test cases, such as the Dam Break problem with a vertical obstacle and heave decay of a partially submerged buoyant cylinder. Finally, a …
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A Novel Multiblock Immersed Boundary Method Enabling High Order Large Eddy Simulation Of Pathological And Medical Device Hemodynamics
… To overcome this, a novel multiblock based immersed boundary method (IBM) is developed based on high order discretization schemes that can efficiently simulate blood flow in complex arterial geometries using structured Cartesian fluid flow solvers. The developed solver, WenoHemo, is …
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Application of pressure-projection algorithms to a sharp projection immersed boundary method for the incompressible Navier-Stokes equations
… describe a globally second-order accurate sharp immersed boundary projection method with an algebraic structure parallel to the classic fractional step method for the unsteady, incompressible Navier-Stokes equations. While second-order accuracy in time and space is generally achievable for the …
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Development of a two-dimensional model of blood microcirculation flows
… cylinder model subjected to axially periodic boundary conditions. This model formulation allows for the use of the streamfunction-vorticity formulation of the Navier-Stokes equation, which offers simplification to boundary conditions and also allows for the use of a non-uniform, collocated …
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Computation of moving interface flows in biophysical applications
… technique employed in this work is the immersed boundary method, a widely known numerical method for fluid-structure interaction (FSI). In this technique, the fluid equations are solved in an Eulerian grid and the structure is treated as a network of Lagrangian nodes. The communication …
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Large Eddy Simulations of complex turbulent flows
… a combination of Large Eddy Simulation (LES) and Immersed Boundary Method (IBM) concepts. LES is an intermediate approach to turbulence simulation in which the onus of modeling of “universal” small scales is appropriately transferred to the resolution of “problem-dependent” large scales or eddies. …
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Study of Fluid Forces and Heat Transfer on Non-spherical Particles in Assembly Using Particle Resolved Simulation
… Navier-Stokes equations are solved using the Immersed Boundary Method (IBM). A Framework for generating particle assembly is developed using physics engine PhysX. High-order boundary conditions are developed for immersed boundary method to resolve the heat transfer in the vicinity of …
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Effects of the Non-Newtonian Rheology on the Fluid-Structure Interactions in Biological Flows
… non-Newtonian flows are investigated by the immersed boundary-lattice Boltzmann method (IB-LBM). Firstly, an efficient and accurate IB-LBM solver for FSIs involving non-Newtonian fluids is developed. The governing equations for non-Newtonian fluids are solved by the lattice Boltzmann method. …
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The Effect of Waveform Shape on Dynamics and Kinematics of the Flow in Endovascular Stents
… of coronary artery. The stents are modeled by an immersed boundary method. Two stent geometries are created which are the idealizations of two clinical ones. The first geometry is an idealization of XIENCE V stent which is called Lambda stent and the second one is the idealization of Endeavor …
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Numerical Simulation Of The Atmospheric Boundary Layer Over Complex Topography: A Modern Approach To A Classical Problem
… and validated to simulate the atmospheric boundary layer (ABL) using large eddy simulation (LES). This framework captures the topography of the Earth’s surface rather than modeling it. To robustly simulate the ABL, four unique capabilities (temperature transport, topographic data, immersed …
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Mathematical modelling of the plunger pump operation with numerical methods for simulating the flow across the valve
… Navier-Stokes equations are presented with the immersed boundary method.
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NUMERICAL AND EXPERIMENTAL INVESTGIATION OF CRYO-FREEZING WITH LARGE BLOOD VESSELS
… liver tissue undergoing cryo-freezing using the immersed boundary method (IBM) is presented in this study. The liver tissue is treated as a non-ideal material having temperature-dependent thermophysical properties. The influence of heating effect due to blood flow (through the vessel surface) has …
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DEVELOPMENT OF GAS KINETIC FLUX SOLVERS AND THEIR APPLICATIONS
… of the GKFSs to study complex and moving boundary problems have also been built. A GKFS-based solver combined with the immersed boundary method (IBM) has been proposed for incompressible flows. Moreover, a diffuse-interface IBM is further developed for the simulation of compressible moving …
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