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An Adaptive Constraint-Based Immerse...

Nangia, Nishant.

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An Adaptive Constraint-Based Immersed Body Method for Multiphase Fluid-Structure Interaction.

Record Type:	Electronic resources : Monograph/item
Title/Author:	An Adaptive Constraint-Based Immersed Body Method for Multiphase Fluid-Structure Interaction./
Author:	Nangia, Nishant.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	393 p.
Notes:	Source: Dissertations Abstracts International, Volume: 80-10, Section: B.
Contained By:	Dissertations Abstracts International80-10B.
Subject:	Fluid mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13806082
ISBN:	9781392028247

An Adaptive Constraint-Based Immersed Body Method for Multiphase Fluid-Structure Interaction.
Nangia, Nishant.

An Adaptive Constraint-Based Immersed Body Method for Multiphase Fluid-Structure Interaction. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 393 p.

Source: Dissertations Abstracts International, Volume: 80-10, Section: B.

Thesis (Ph.D.)--Northwestern University, 2019.

This item must not be sold to any third party vendors.

Many industrial fluid flow problems involve the interaction between heavy, rigid objects and one or more fluid phases. For several decades, there has been a vested interest in simulating these fluid-structure interaction (FSI) problems in order to improve engineering design processes. However, numerical simulations of these problems can be challenging and computationally expensive due to the complexity and multiphysics nature of the governing partial differential equations. This thesis presents a robust, adaptive numerical technique for simulating high density ratio and high shear multiphase flows. The method is second-order accurate and stable for density and viscosity ratios of up to one million, and employs the level set approach to resolve topologically complex interfaces. This incompressible flow solver is coupled to a constraint-based immersed body method, enabling efficient simulation of rigid, multiphase fluid-structure interaction. Adaptive mesh refinement is used to deploy fine grid resolution in parts of the domain requiring more accuracy, such as fluid-solid or fluid-gas interfaces and regions of high vorticity. A variety of two- and three-phase fluid flow problems are simulated to demonstrate the wide applicability of the technique. Additionally, this thesis presents an efficient post-processing approach for computing hydrodynamic forces and torques on immersed bodies and investigates optimality in aquatic locomotion for undulatory swimmers.

ISBN: 9781392028247Subjects--Topical Terms:

528155
Fluid mechanics.
Subjects--Index Terms:

Adaptive mesh refinement

An Adaptive Constraint-Based Immersed Body Method for Multiphase Fluid-Structure Interaction.
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245 1 3 $a An Adaptive Constraint-Based Immersed Body Method for Multiphase Fluid-Structure Interaction.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 393 p.
500 $a Source: Dissertations Abstracts International, Volume: 80-10, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Patankar, Neelesh A.
502 $a Thesis (Ph.D.)--Northwestern University, 2019.
506 $a This item must not be sold to any third party vendors.
520 $a Many industrial fluid flow problems involve the interaction between heavy, rigid objects and one or more fluid phases. For several decades, there has been a vested interest in simulating these fluid-structure interaction (FSI) problems in order to improve engineering design processes. However, numerical simulations of these problems can be challenging and computationally expensive due to the complexity and multiphysics nature of the governing partial differential equations. This thesis presents a robust, adaptive numerical technique for simulating high density ratio and high shear multiphase flows. The method is second-order accurate and stable for density and viscosity ratios of up to one million, and employs the level set approach to resolve topologically complex interfaces. This incompressible flow solver is coupled to a constraint-based immersed body method, enabling efficient simulation of rigid, multiphase fluid-structure interaction. Adaptive mesh refinement is used to deploy fine grid resolution in parts of the domain requiring more accuracy, such as fluid-solid or fluid-gas interfaces and regions of high vorticity. A variety of two- and three-phase fluid flow problems are simulated to demonstrate the wide applicability of the technique. Additionally, this thesis presents an efficient post-processing approach for computing hydrodynamic forces and torques on immersed bodies and investigates optimality in aquatic locomotion for undulatory swimmers.
590 $a School code: 0163.
650 4 $a Fluid mechanics. $3 528155
650 4 $a Computational physics. $3 3343998
650 4 $a Applied Mathematics. $3 1669109
653 $a Adaptive mesh refinement
653 $a Aquatic locomotion
653 $a Computational fluid dynamics
653 $a Fluid-structure interaction
653 $a Multiphase flow
653 $a Vehicle aerodynamics
690 $a 0204
690 $a 0216
690 $a 0364
710 2 $a Northwestern University. $b Engineering Sciences and Applied Mathematics. $3 3279510
773 0 $t Dissertations Abstracts International $g 80-10B.
790 $a 0163
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13806082