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Computational Methods for Simulations of Multiphase Compressible Flows for Atomization Applications.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Computational Methods for Simulations of Multiphase Compressible Flows for Atomization Applications./
Author:	Kannan, Karthik.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	206 p.
Notes:	Source: Dissertations Abstracts International, Volume: 81-11.
Contained By:	Dissertations Abstracts International81-11.
Subject:	Aerospace engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27955212
ISBN:	9798645457488

Computational Methods for Simulations of Multiphase Compressible Flows for Atomization Applications.
Kannan, Karthik.

Computational Methods for Simulations of Multiphase Compressible Flows for Atomization Applications. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 206 p.

Source: Dissertations Abstracts International, Volume: 81-11.

Thesis (Ph.D.)--Arizona State University, 2020.

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

Compressible fluid flows involving multiple physical states of matter occur in both nature and technical applications such as underwater explosions and implosions, cavitation-induced bubble collapse in naval applications and Richtmyer-Meshkov type instabilities in inertial confinement fusion. Of particular interest is the atomization of fuels that enable shock-induced mixing of fuel and oxidizer in supersonic combustors. Due to low residence times and varying length scales, providing insight through physical experiments is both technically challenging and sometimes unfeasible. Numerical simulations can help provide detailed insight and aid in the engineering design of devices that can harness these physical phenomena.In this research, computational methods were developed to accurately simulate phase interfaces in compressible fluid flows with a focus on targeting primary atomization. Novel numerical methods which treat the phase interface as a discontinuity, and as a smeared region were developed using low-dissipation, high-order schemes. The resulting methods account for the effects of compressibility, surface tension and viscosity. To aid with the varying length scales and high-resolution requirements found in atomization applications, an adaptive mesh refinement (AMR) framework is used to provide high-resolution only in regions of interest. The developed methods were verified with test cases involving strong shocks, high density ratios, surface tension effects and jumps in the equations of state, in one-, two- and three dimensions, obtaining good agreement with theoretical and experimental results. An application case of the primary atomization of a liquid jet injected into a Mach 2 supersonic crossflow of air is performed with the methods developed.

ISBN: 9798645457488Subjects--Topical Terms:

1002622
Aerospace engineering.
Subjects--Index Terms:

Adaptive mesh refinement

Computational Methods for Simulations of Multiphase Compressible Flows for Atomization Applications.
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245 1 0 $a Computational Methods for Simulations of Multiphase Compressible Flows for Atomization Applications.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 206 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-11.
500 $a Advisor: Herrmann, Marcus.
502 $a Thesis (Ph.D.)--Arizona State University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Compressible fluid flows involving multiple physical states of matter occur in both nature and technical applications such as underwater explosions and implosions, cavitation-induced bubble collapse in naval applications and Richtmyer-Meshkov type instabilities in inertial confinement fusion. Of particular interest is the atomization of fuels that enable shock-induced mixing of fuel and oxidizer in supersonic combustors. Due to low residence times and varying length scales, providing insight through physical experiments is both technically challenging and sometimes unfeasible. Numerical simulations can help provide detailed insight and aid in the engineering design of devices that can harness these physical phenomena.In this research, computational methods were developed to accurately simulate phase interfaces in compressible fluid flows with a focus on targeting primary atomization. Novel numerical methods which treat the phase interface as a discontinuity, and as a smeared region were developed using low-dissipation, high-order schemes. The resulting methods account for the effects of compressibility, surface tension and viscosity. To aid with the varying length scales and high-resolution requirements found in atomization applications, an adaptive mesh refinement (AMR) framework is used to provide high-resolution only in regions of interest. The developed methods were verified with test cases involving strong shocks, high density ratios, surface tension effects and jumps in the equations of state, in one-, two- and three dimensions, obtaining good agreement with theoretical and experimental results. An application case of the primary atomization of a liquid jet injected into a Mach 2 supersonic crossflow of air is performed with the methods developed.
590 $a School code: 0010.
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Mechanical engineering. $3 649730
650 4 $a Computational physics. $3 3343998
653 $a Adaptive mesh refinement
653 $a Compressible flow
653 $a Multiphase flow
653 $a Numerical methods
653 $a Primary atomization
690 $a 0538
690 $a 0548
690 $a 0216
710 2 $a Arizona State University. $b Aerospace Engineering. $3 3184803
773 0 $t Dissertations Abstracts International $g 81-11.
790 $a 0010
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27955212