東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Modeling of Material-Environment Int...

Chen, Samuel Y.

Linked to FindBook

Google Book

Amazon

博客來

Modeling of Material-Environment Interactions for Hypersonic Thermal Protection Systems.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Modeling of Material-Environment Interactions for Hypersonic Thermal Protection Systems./
Author:	Chen, Samuel Y.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	237 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-07, Section: B.
Contained By:	Dissertations Abstracts International82-07B.
Subject:	Physical chemistry. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28240092
ISBN:	9798684621529

Modeling of Material-Environment Interactions for Hypersonic Thermal Protection Systems.
Chen, Samuel Y.

Modeling of Material-Environment Interactions for Hypersonic Thermal Protection Systems. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 237 p.

Source: Dissertations Abstracts International, Volume: 82-07, Section: B.

Thesis (Ph.D.)--University of Michigan, 2020.

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

Hypersonic vehicles operate in extreme conditions, experiencing high heating loads, gas temperatures often exceeding 10,000 K in the shock layer, and oxidizing environments. Thermal protection systems (TPS) are thus a vital component to the design of a hypersonic flight vehicle. The overarching goal of this work is to characterize and model the material-environment interactions between TPS materials and the hypersonic flowfield -- these dictate the thermal and chemical behavior of the TPS. Two materials are investigated: ablative materials, which degrade during exposure to flight conditions, and ultra-high temperature ceramics (UHTCs), which exhibit refractory and oxidation-resistant properties. A coupled framework involving computational fluid dynamics (CFD), material response, surface chemistry, and radiation is used to simulate experiments and evaluate the material models. This work is divided into three main parts. The first part of this dissertation demonstrates how radiative emission can be used in simulations to investigate the chemical kinetics of ablative materials. CFD--radiation simulations are performed in collaboration with high-temperature plasma experiments, using radiative emission measurements in the reacting boundary layer to validate the chemical models. The second part focuses on the development of a thermodynamic model describing oxidation of silicon carbide (SiC), a UHTC material. The model is validated against experimental data in the literature, and coupled CFD simulations of SiC oxidation are performed using the model. Predicted surface temperatures and simulated emission spectra are shown to be in good agreement with experimental data. The third part details the development and evaluation of a thermodynamic model for zirconium diboride (ZrB2) and ZrB2-SiC oxidation, a UHTC composite. Overall, thermodynamic modeling approaches are sufficient to describe the equilibrium oxidation behavior of these TPS materials. However, limitations of the proposed models are also discussed, motivating the need for higher-fidelity finite-rate models and additional experimental data.

ISBN: 9798684621529Subjects--Topical Terms:

1981412
Physical chemistry.
Subjects--Index Terms:

Material-environment interaction

Modeling of Material-Environment Interactions for Hypersonic Thermal Protection Systems.
LDR:03640nmm a2200481 4500 001 2281889
005 20210927083421.5
008 220723s2020 ||||||||||||||||| ||eng d
020 $a 9798684621529
035 $a (MiAaPQ)AAI28240092
035 $a (MiAaPQ)umichrackham003336
035 $a AAI28240092
040 $a MiAaPQ $c MiAaPQ
100 1 $a Chen, Samuel Y. $3 3560598
245 1 0 $a Modeling of Material-Environment Interactions for Hypersonic Thermal Protection Systems.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 237 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-07, Section: B.
500 $a Advisor: Fidkowski, Krzysztof J.
502 $a Thesis (Ph.D.)--University of Michigan, 2020.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a Hypersonic vehicles operate in extreme conditions, experiencing high heating loads, gas temperatures often exceeding 10,000 K in the shock layer, and oxidizing environments. Thermal protection systems (TPS) are thus a vital component to the design of a hypersonic flight vehicle. The overarching goal of this work is to characterize and model the material-environment interactions between TPS materials and the hypersonic flowfield -- these dictate the thermal and chemical behavior of the TPS. Two materials are investigated: ablative materials, which degrade during exposure to flight conditions, and ultra-high temperature ceramics (UHTCs), which exhibit refractory and oxidation-resistant properties. A coupled framework involving computational fluid dynamics (CFD), material response, surface chemistry, and radiation is used to simulate experiments and evaluate the material models. This work is divided into three main parts. The first part of this dissertation demonstrates how radiative emission can be used in simulations to investigate the chemical kinetics of ablative materials. CFD--radiation simulations are performed in collaboration with high-temperature plasma experiments, using radiative emission measurements in the reacting boundary layer to validate the chemical models. The second part focuses on the development of a thermodynamic model describing oxidation of silicon carbide (SiC), a UHTC material. The model is validated against experimental data in the literature, and coupled CFD simulations of SiC oxidation are performed using the model. Predicted surface temperatures and simulated emission spectra are shown to be in good agreement with experimental data. The third part details the development and evaluation of a thermodynamic model for zirconium diboride (ZrB2) and ZrB2-SiC oxidation, a UHTC composite. Overall, thermodynamic modeling approaches are sufficient to describe the equilibrium oxidation behavior of these TPS materials. However, limitations of the proposed models are also discussed, motivating the need for higher-fidelity finite-rate models and additional experimental data.
590 $a School code: 0127.
650 4 $a Physical chemistry. $3 1981412
650 4 $a Thermodynamics. $3 517304
650 4 $a Materials science. $3 543314
650 4 $a Plasma physics. $3 3175417
650 4 $a Environmental studies. $3 2122803
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Fluid mechanics. $3 528155
653 $a Material-environment interaction
653 $a Hypersonics
653 $a Ablation
653 $a Ultra high temperature ceramic
653 $a Silicon carbide
653 $a Oxidation
653 $a Radiative emission
653 $a Computational fluid dynamics
690 $a 0538
690 $a 0794
690 $a 0494
690 $a 0477
690 $a 0204
690 $a 0348
690 $a 0759
710 2 $a University of Michigan. $b Aerospace Engineering. $3 2093897
773 0 $t Dissertations Abstracts International $g 82-07B.
790 $a 0127
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28240092