Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 18 of 18 for “"Fluid solid interaction"”.
-
Simulating fluid-solid interaction using smoothed particle hydrodynamics method
The fluid-solid interaction (FSI) is a challenging process for numerical models since it requires accounting for the interactions of deformable materials that are governed by different equations of state. It calls for the modeling of large deformation, geometrical discontinuity, material failure, …
-
Static, dynamic and levitation characteristics of squeeze film air journal bearing: Designing, modelling, simulation and fluid solid interaction
… environment because of the use of lubricating fluid. A potential solution to the above-mentioned problems is the new squeeze film air bearing. It works on the rapid squeeze action of an air film to produce separation between two metal surfaces. This has the benefit of being compact with a very …
-
The Role of Turbulence on the Entrainment of a Single Sphere and the Effects of Roughness on Fluid-Solid Interaction
… second part deals with the nature of sediment-fluid interaction for more general and complex flows where the number of sediment particles that form the rough surface is varied. The first part of this work that investigates the role of turbulence in initiating sediment motion, uses a video …
-
Atomistic engineering of fluid Structure at the fluid-solid interface
Under extreme confinement, fluids exhibit a number of remarkable effects that cannot be predicted using macroscopic fluid mechanics. These phenomena are especially pronounced when the confining length scale is comparable to the fluid's internal (molecular) length scale. Elucidating the physical …
-
The dynamics of shaken baby syndrome
… and possibly tearing the veins that bridge the fluid filled gap. To better understand this condition, experiments were performed to measure the mechanical properties of bridging veins followed by detailed mathematical modelling of the motion of a baby’s brain in response to shaking. Few finite …
-
Development of a novel uncovered stent system for the management of complex aortic aneurysms
… were capable in differentiating tissue types. - Solid-to-solid interaction and one-way fluid-solid interaction (FSI) analysis was performed based on patient-specific computer tomography angiography (Chapters 5&6). Structural stress concentrations were observed within the landing zones, which …
-
Development and Validation of Fluid-Structure Interaction in Aircraft Crashworthiness Studies
… response of the aircraft, but also the fluidic behavior of the water. Fundamental studies were first conducted on a well-researched fluid-solid interaction problem, the water entry of a wedge. Typical modeling strategies did not capture the desired detail of the event. An advanced …
-
Methods for the direct simulation of nanoscale film breakup and contact angles
This thesis investigates direct simulation of fluids with free surfaces and contact lines, with a focus on capturing nanoscale physics in a continuum based computational framework. Free surfaces and contact lines have long presented some of the most challenging problems in computational fluid …
-
Simulación del flujo sanguíneo y su interacción con la pared arterial mediante modelos de elementos finitos
… En esta tesis se desarrolla un modelo de fluido newtoniano incompresible que simula la sangre y un modelo de solidó hiperelastico incompresible para la pared arterial, obteniéndose los parámetros constitutivos de este ultimo con datos experimentales. Las ecuaciones se resuelven …
-
Dynamics of Small Elastic Systems in Fluid: Tension and Nonlinearity
… of micro and nano-scale systems immersed in a fluid. Previous literature has established an understanding of the fluid-solid interaction for systems including cantilevers and doubly clamped beams. Building on these advances, this work extends the theory of doubly clamped beams with an arbitrary …
-
Effects of Elevated Intracranial Pressure on a Cerebral Vein Model
… This was done by performing transient coupled fluid-structure simulations on a segment of an intracranial vein that sought to replicate the ICP surge experienced during strangulation. The vessel model was created by isolating a segment of an intracranial vessel. Using the software 3D Slicer, …
-
Numerical Methods for Fluid-Solid Coupled Simulations: Robin Interface Conditions and Shock-Dominated Applications
… numerical algorithms for coupling computational fluid dynamics (CFD) and computational solid dynamics (CSD) solvers, and the use of these solvers for simulating fluid-solid interaction (FSI) problems involving large deformation, shock waves, and multiphase flow. The dissertation consists of two …
-
Fluid-fluid displacement in porous-media microfluidics
Immiscible fluid-fluid displacement under geometric confinement is a key physical process in large-scale subsurface energy technologies such as geologic carbon sequestration and in small-scale microfluidic techniques. Research over the past few decades has provided improved understanding of the …
-
Biomechanical characterization and computational modeling of the anterior eye
… a computational model of the iris-aqueous-humor interaction in the anterior eye during dilation. The iris is composed of three constituent components: the stroma, the sphincter iridis, and the dilator pupillae. To quantify the relative stiffness of different sections of the iris, mechanical …
-
A Mechano-Chemical Computational model of Deep Vein Thrombosis
… flow, thrombin, and fibrinogen. Computational fluid dynamics (CFD) simulations were carried out using the ANSYS modelling suite. The Navier-Stokes equations were solved to determine the fluid flow. Based on a clinical dataset of pulsatile blood flow, the laminar flow of blood with a Poiseuille …
-
Numerical Simulation of Contacts Working Under Mixed Lubricating Conditions
… presence of a lubricating oil film and direct solid-to-solid contact between asperities on the surfaces. This duality introduces significant complexities in defining and modelling the ML region when simulating the behaviour of the tribological system. A substantial aspect of the ML regime is …
-
Methods and Implementation of Fluid-Structure Interaction Modeling into an Industry-Accepted Design Tool
<p>Fluid-structure interaction (FSI) modeling is a method by which fluid and solid domains are coupled together to produce a single result that cannot be produced if each physical domain was evaluated individually. The work presented in this dissertation is a demonstration of the methods and …
-
Cavitation in Pharmaceutical Manufacturing and Shipping
… at the University of Denver demonstrated that fluid cavitation can generate a large number of sub-visible protein particles in ultra clean formulations, but that mitigation can be achieved with fluid property manipulation. The goal of this research was to (1) assess the risk of cavitation under …