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Thermal-Elastic Model of Regression ...

Meier dos Santos, Maycon,

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Thermal-Elastic Model of Regression of Solid Composite Propellants /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Thermal-Elastic Model of Regression of Solid Composite Propellants // Maycon Meier dos Santos.
Author:	Meier dos Santos, Maycon,
Description:	1 electronic resource (166 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
Contained By:	Dissertations Abstracts International85-10B.
Subject:	Mechanical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31237217
ISBN:	9798382317335

Thermal-Elastic Model of Regression of Solid Composite Propellants /
Meier dos Santos, Maycon,

Thermal-Elastic Model of Regression of Solid Composite Propellants /Maycon Meier dos Santos. - 1 electronic resource (166 pages)

Source: Dissertations Abstracts International, Volume: 85-10, Section: B.

Solid composite propellants (SCPs) are widely used in propulsion due to their stability in long-term storage and simplicity in production and operation. Accurately predicting the regression of SCP burn surfaces is crucial for designing and controlling solid rocket motors. This complex process involves thermal, mechanical, and chemical interactions that result in extreme morphological changes and topological transitions. Previous models have used sharp interface methods that rely on strong assumptions about the topology of the interface, but diffuse interface methods like phase field (PF) offer distinct numerical advantages in modeling such processes. This work presents a thermodynamically-based phase-field model for predicting SCPs burn behavior. We employ a diffuse-species-interface field to capture complex burn chemistry in a reduced-order fashion, enabling the solid phase to be modeled without a fluid solver. The computational implementation uses block-structured adaptive mesh refinement for increased performance and employs adaptive temporal sub-stepping. We apply the model for test cases for homogeneous AP systems and complex heterogeneous AP/HTPB systems. Furthermore, the model is applied to macroscale homogenized SCPs' geometries to compute the total burning interface as a means of predicting total thrust over time. We observe reasonable quantitative agreement in all cases, even when applied predictively, demonstrating the efficacy of the proposed phase-field model as a numerical design tool for future SCP investigation. Our method improves upon previous models by integrating a thermal solver as the driving force of the PF regression model, which increases the number of kinematic forces accounted for and allows for the study of thermal diffusivity in the system. Furthermore, our approach implements a strong form elasticity solver to compute the stress fields during the burn. Our method effectively reproduces experimental data by matching temperature, burn rate, stress, and thermal diffusivity profiles. In conclusion, our phase-field model offers a powerful tool for designing and predicting the behavior of SCPs, with the potential to improve future propulsion systems.

English

ISBN: 9798382317335Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

AP/HTPB

Thermal-Elastic Model of Regression of Solid Composite Propellants /
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100 1 $a Meier dos Santos, Maycon, $e author. $3 3829916
245 1 0 $a Thermal-Elastic Model of Regression of Solid Composite Propellants / $c Maycon Meier dos Santos.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 1 electronic resource (166 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
500 $a Includes supplementary digital materials.
500 $a Advisors: Runnels, Brandon Committee members: Quinlan, John Matt; Yee, Xin; McCollum, Jena; Kalman, Joseph; Bojko, Brian.
502 $b Ph.D. $c University of Colorado Colorado Springs $d 2024.
520 $a Solid composite propellants (SCPs) are widely used in propulsion due to their stability in long-term storage and simplicity in production and operation. Accurately predicting the regression of SCP burn surfaces is crucial for designing and controlling solid rocket motors. This complex process involves thermal, mechanical, and chemical interactions that result in extreme morphological changes and topological transitions. Previous models have used sharp interface methods that rely on strong assumptions about the topology of the interface, but diffuse interface methods like phase field (PF) offer distinct numerical advantages in modeling such processes. This work presents a thermodynamically-based phase-field model for predicting SCPs burn behavior. We employ a diffuse-species-interface field to capture complex burn chemistry in a reduced-order fashion, enabling the solid phase to be modeled without a fluid solver. The computational implementation uses block-structured adaptive mesh refinement for increased performance and employs adaptive temporal sub-stepping. We apply the model for test cases for homogeneous AP systems and complex heterogeneous AP/HTPB systems. Furthermore, the model is applied to macroscale homogenized SCPs' geometries to compute the total burning interface as a means of predicting total thrust over time. We observe reasonable quantitative agreement in all cases, even when applied predictively, demonstrating the efficacy of the proposed phase-field model as a numerical design tool for future SCP investigation. Our method improves upon previous models by integrating a thermal solver as the driving force of the PF regression model, which increases the number of kinematic forces accounted for and allows for the study of thermal diffusivity in the system. Furthermore, our approach implements a strong form elasticity solver to compute the stress fields during the burn. Our method effectively reproduces experimental data by matching temperature, burn rate, stress, and thermal diffusivity profiles. In conclusion, our phase-field model offers a powerful tool for designing and predicting the behavior of SCPs, with the potential to improve future propulsion systems.
546 $a English
590 $a School code: 0892
650 4 $a Mechanical engineering. $3 649730
650 4 $a Computational physics. $3 3343998
650 4 $a Applied mathematics. $3 2122814
650 4 $a Aerospace engineering. $3 1002622
653 $a AP/HTPB
653 $a Solid composite propellants
653 $a Diffuse interface methods
653 $a Evolving interfaces
653 $a Phase-field model
690 $a 0548
690 $a 0216
690 $a 0364
690 $a 0538
710 2 $a University of Colorado Colorado Springs. $b College of Engineering and Applied Science-Mechanical Engineering. $e degree granting institution. $3 3821822
720 1 $a Runnels, Brandon $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 85-10B.
790 $a 0892
791 $a Ph.D.
792 $a 2024
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31237217