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Physics-Informed and Data-Driven Modeling for Radiative Transport in Particulate Media
Physics-Informed and Data-Driven Modeling for Radiative Transport in Particulate Media
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105214
- ISBN
- 9798291565360
- DDC
- 620
- 저자명
- Chen, Zijie.
- 서명/저자
- Physics-Informed and Data-Driven Modeling for Radiative Transport in Particulate Media
- 발행사항
- [Sl] : University of Michigan, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 186 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Bala Chandran, Rohini.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2025.
- 초록/해제
- 요약Radiative transport in particulate media plays a crucial role in many applications ranging from high-temperature ( 600 °C) solar energy and thermal technologies to spectrally selective materials for heating/cooling applications. However, modeling methods for radiative transport in particulate media have focused on static media such as packed beds and foams, and there has been limited focus on extending it to granular flows. Therefore, the main objective of this dissertation is to combine physics-informed modeling with data-driven techniques to integrate radiative transport predictions in dynamic, multiphase flows involving solid particles.To enable the coupling of radiative transport with particle flows, reduced-order radiative view factor correlations are developed, where the view factor is determined as a function of dimensionless distance, viewing angle, and number of shading particles. Training data is obtained from physics-based Monte Carlo ray tracing simulations on a monodisperse, packed bed with a wide range of solid volume fractions (0.016-0.45). These correlations are physically interpretable and result in accurate predictions. They are powerful as they help obtain particle-particle and particle-wall view factors as a function of only geometric parameters, which facilitates the determination of radiative fluxes on discrete surfaces. This is integrated with particle flow models that perform Lagrangian tracking to update individual particle position, velocity, and temperature. Leveraging open-source software, our model incorporates short-range and long-range radiative interactions between grey surfaces in addition to conductive heat transfer pathways. These coupled models are applied to: (i) systematically test the effect of solid volume fractions in a plug flow of particles; and (ii) perform extensive parametric explorations to inform new and comprehensive heat transfer correlations for dense granular flows with applications in particle-based heat exchangers. These discrete flow simulations reveal that radiation is extremely sensitive to solid volume fraction as it contributes 90% for dilute flows. Our correlation notably captures the effects of particle size, thermal conductivity and solid volume fraction while existing correlations from continuum modeling and/or experiments either focus on channel geometry or cannot obtain good effective properties for discrete flow. This correlation matches well with reported experimental data and offers a versatile, rapid predictive tool to develop strategies to improve thermal performance. For instance, by shrinking the particle size by about two-thirds, the heat transfer coefficient can be enhanced from 300 to 400 W/m.
- 초록/해제
- 요약2/K.Inverse design tools have been developed to identify new potential optical properties for target spectral performance. Assuming a packed bed of particles, synthetic training datasets that map reflectance as a function of wavelength (0.2-14 μm), material morphology (particle size and solid volume fraction) and refractive indices are generated using classical electromagnetic wave and ray tracing simulations. To facilitate rapid predictions of spectral reflectance and extensive parametric explorations, a decision tree forward model is developed, which achieves high accuracy at low computational cost. Inverse model is constructed by integrating particle swarm optimization and decision tree model while offering multiple possible solutions of complex refractive index for the same target. This inverse model has been proven to provide non-uniqueness and non-linearity mapping from spectral reflectance to optical properties by an ideal radiative cooling profile, and this can be broadly applied to other spectral designs as well.In summary, this dissertation develops powerful radiative transport modeling tools for particulate media by combining high-fidelity physics-based simulations with interpretable data-driven techniques while striving to balance accuracy and computational efficiency.
- 일반주제명
- Engineering
- 일반주제명
- Energy
- 일반주제명
- Mechanical engineering
- 일반주제명
- Materials science
- 키워드
- Radiative fluxes
- 기타저자
- University of Michigan Mechanical Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798291565360
■035 ▼a(MiAaPQ)AAI32271745
■035 ▼a(MiAaPQ)umichrackham006533
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a620
■1001 ▼aChen, Zijie.
■24510▼aPhysics-Informed and Data-Driven Modeling for Radiative Transport in Particulate Media
■260 ▼a[Sl]▼bUniversity of Michigan▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a186 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Bala Chandran, Rohini.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2025.
■520 ▼aRadiative transport in particulate media plays a crucial role in many applications ranging from high-temperature ( 600 °C) solar energy and thermal technologies to spectrally selective materials for heating/cooling applications. However, modeling methods for radiative transport in particulate media have focused on static media such as packed beds and foams, and there has been limited focus on extending it to granular flows. Therefore, the main objective of this dissertation is to combine physics-informed modeling with data-driven techniques to integrate radiative transport predictions in dynamic, multiphase flows involving solid particles.To enable the coupling of radiative transport with particle flows, reduced-order radiative view factor correlations are developed, where the view factor is determined as a function of dimensionless distance, viewing angle, and number of shading particles. Training data is obtained from physics-based Monte Carlo ray tracing simulations on a monodisperse, packed bed with a wide range of solid volume fractions (0.016-0.45). These correlations are physically interpretable and result in accurate predictions. They are powerful as they help obtain particle-particle and particle-wall view factors as a function of only geometric parameters, which facilitates the determination of radiative fluxes on discrete surfaces. This is integrated with particle flow models that perform Lagrangian tracking to update individual particle position, velocity, and temperature. Leveraging open-source software, our model incorporates short-range and long-range radiative interactions between grey surfaces in addition to conductive heat transfer pathways. These coupled models are applied to: (i) systematically test the effect of solid volume fractions in a plug flow of particles; and (ii) perform extensive parametric explorations to inform new and comprehensive heat transfer correlations for dense granular flows with applications in particle-based heat exchangers. These discrete flow simulations reveal that radiation is extremely sensitive to solid volume fraction as it contributes 90% for dilute flows. Our correlation notably captures the effects of particle size, thermal conductivity and solid volume fraction while existing correlations from continuum modeling and/or experiments either focus on channel geometry or cannot obtain good effective properties for discrete flow. This correlation matches well with reported experimental data and offers a versatile, rapid predictive tool to develop strategies to improve thermal performance. For instance, by shrinking the particle size by about two-thirds, the heat transfer coefficient can be enhanced from 300 to 400 W/m.
■520 ▼a2/K.Inverse design tools have been developed to identify new potential optical properties for target spectral performance. Assuming a packed bed of particles, synthetic training datasets that map reflectance as a function of wavelength (0.2-14 μm), material morphology (particle size and solid volume fraction) and refractive indices are generated using classical electromagnetic wave and ray tracing simulations. To facilitate rapid predictions of spectral reflectance and extensive parametric explorations, a decision tree forward model is developed, which achieves high accuracy at low computational cost. Inverse model is constructed by integrating particle swarm optimization and decision tree model while offering multiple possible solutions of complex refractive index for the same target. This inverse model has been proven to provide non-uniqueness and non-linearity mapping from spectral reflectance to optical properties by an ideal radiative cooling profile, and this can be broadly applied to other spectral designs as well.In summary, this dissertation develops powerful radiative transport modeling tools for particulate media by combining high-fidelity physics-based simulations with interpretable data-driven techniques while striving to balance accuracy and computational efficiency.
■590 ▼aSchool code: 0127.
■650 4▼aEngineering
■650 4▼aEnergy
■650 4▼aMechanical engineering
■650 4▼aMaterials science
■653 ▼aRadiative transport
■653 ▼aParticulate media
■653 ▼aData-driven modeling
■653 ▼aTracing simulations
■653 ▼aRadiative fluxes
■690 ▼a0548
■690 ▼a0791
■690 ▼a0537
■690 ▼a0794
■71020▼aUniversity of Michigan▼bMechanical Engineering.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359791▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


