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A Robust High Order Framework for Compressible Multi-Phase Multi-Component Flows with Interface Regularization, Phase Change, and Spray Modeling
A Robust High Order Framework for Compressible Multi-Phase Multi-Component Flows with Interface Regularization, Phase Change, and Spray Modeling
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105626
- ISBN
- 9798265428615
- DDC
- 553.7
- 저자명
- Collis, Henry.
- 서명/저자
- A Robust High Order Framework for Compressible Multi-Phase Multi-Component Flows with Interface Regularization, Phase Change, and Spray Modeling
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 250 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Iaccarino, Gianluca;Mani, Ali.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약Development of a robust and accurate numerical framework for multi-physics is essential for engineering and science applications. In particular, simulation tools which enable the design and scientific development of complex engineering systems are critical for advancements. In this thesis, numerical and modeling frameworks are presented to simulate complex multi-phase multi-component systems which involve shocks, high density ratio interfacial flows, subgrid sprays, phase change, and combustion. The description of the overall computational approach is split into two parts.First, a robust computational framework with the four-equation model is proposed to simulate compressible multi-phase multi-component flows. An ENO-type scheme is designed to be consistent with the thermodynamic equilibrium assumptions of the four-equation multi-phase model, naturally enforcing the interface equilibrium condition - preventing oscillations in pressure, velocity, and temperature around isothermal material interfaces. The proposed four-equation framework accomplishes this without requiring explicit equations for volume fraction or other redundant transport equations for variables including mixture equation of state parameters, as is commonly done for the five-equation model. Additionally, consistent mixing rules are applied to capture leakage-free intraphase non-dilute species diffusion for multi-phase multi-component systems and used to extend the conservative diffuse interface (CDI) model to enforce immiscibility conditions for multi-phase multi-component flows. For robust simulations involving strong shock and material interface interactions, a conservative positivity-preserving limiter is applied locally in space for minimal degradation of the baseline ENO-type scheme. We show that this consistent framework is equally applicable for regimes ranging from single-phase to multi-phase multi-component flows. Second, the multi-physics modeling capabilities including subgrid models for spray, finite-rate phase change, and phase-constrained combustion are shown to obtain accurate predictions of complex multi-phase flows at a reasonable cost. These models are coupled to solve complex flows, including simulation of a finite-rate evaporation of a diesel spray, and both the injection and ignition stages of a cryogenic liquid rocket combustor.
- 일반주제명
- Water
- 일반주제명
- Decomposition
- 일반주제명
- Helium
- 일반주제명
- Vortices
- 일반주제명
- Boundary conditions
- 일반주제명
- Mathematics
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017360840
■00520260202105626
■006m o d
■007cr#unu||||||||
■020 ▼a9798265428615
■035 ▼a(MiAaPQ)AAI32316561
■035 ▼a(MiAaPQ)Stanfordzj376hn1952
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a553.7
■1001 ▼aCollis, Henry.
■24512▼aA Robust High Order Framework for Compressible Multi-Phase Multi-Component Flows with Interface Regularization, Phase Change, and Spray Modeling
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a250 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Iaccarino, Gianluca;Mani, Ali.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼aDevelopment of a robust and accurate numerical framework for multi-physics is essential for engineering and science applications. In particular, simulation tools which enable the design and scientific development of complex engineering systems are critical for advancements. In this thesis, numerical and modeling frameworks are presented to simulate complex multi-phase multi-component systems which involve shocks, high density ratio interfacial flows, subgrid sprays, phase change, and combustion. The description of the overall computational approach is split into two parts.First, a robust computational framework with the four-equation model is proposed to simulate compressible multi-phase multi-component flows. An ENO-type scheme is designed to be consistent with the thermodynamic equilibrium assumptions of the four-equation multi-phase model, naturally enforcing the interface equilibrium condition - preventing oscillations in pressure, velocity, and temperature around isothermal material interfaces. The proposed four-equation framework accomplishes this without requiring explicit equations for volume fraction or other redundant transport equations for variables including mixture equation of state parameters, as is commonly done for the five-equation model. Additionally, consistent mixing rules are applied to capture leakage-free intraphase non-dilute species diffusion for multi-phase multi-component systems and used to extend the conservative diffuse interface (CDI) model to enforce immiscibility conditions for multi-phase multi-component flows. For robust simulations involving strong shock and material interface interactions, a conservative positivity-preserving limiter is applied locally in space for minimal degradation of the baseline ENO-type scheme. We show that this consistent framework is equally applicable for regimes ranging from single-phase to multi-phase multi-component flows. Second, the multi-physics modeling capabilities including subgrid models for spray, finite-rate phase change, and phase-constrained combustion are shown to obtain accurate predictions of complex multi-phase flows at a reasonable cost. These models are coupled to solve complex flows, including simulation of a finite-rate evaporation of a diesel spray, and both the injection and ignition stages of a cryogenic liquid rocket combustor.
■590 ▼aSchool code: 0212.
■650 4▼aWater
■650 4▼aDecomposition
■650 4▼aHelium
■650 4▼aVortices
■650 4▼aBoundary conditions
■650 4▼aMathematics
■690 ▼a0405
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360840▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


