A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension

 

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dc.contributor.advisor Malan, Arnaud
dc.contributor.advisor Langdon, Genevieve
dc.contributor.author Oomar, Muhammad Yusufali
dc.date.accessioned 2021-09-15T16:33:49Z
dc.date.available 2021-09-15T16:33:49Z
dc.date.issued 2021_
dc.identifier.citation Oomar, M.Y. 2021. A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension. . ,Faculty of Engineering and the Built Environment ,Department of Mechanical Engineering. http://hdl.handle.net/11427/33935 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/33935
dc.description.abstract This work presents an all-Mach method for two-phase inviscid flow in the presence of surface tension. A modified version of the Hartens, Lax, Leer and Contact (HLLC) approximate Riemann solver based on Garrick et al. [1] is developed and combined with the popular Volume of Fluid (VoF) method: Compressive Interface Capturing Scheme for Arbitrary Meshes (CICSAM). This novel combination yields a scheme with both HLLC shock capturing as well as accurate liquid-gas interface tracking characteristics. To ensure compatibility with VoF, the Monotone Upstream-centred Scheme for Conservation Laws (MUSCL) [2] is applied to non-conservative (primitive) variables, which yields both robustness and accuracy. Liquid-gas interface curvature is computed via both height functions [3, 4] and the convolution method [5]. This is in the interest of applicability to both cartesian and arbitrary meshes. The author emphasizes the use of VoF in the interest of surface tension modelling accuracy. The method is validated using a range of test-cases available in literature. The results show flow features that are in agreement with experimental and benchmark data. In particular, the use of the HLLC-VoF combination leads to a sharp volume fraction and energy field with improved accuracy (up to secondorder).
dc.subject VoF
dc.subject Compressible
dc.subject Surface Tension
dc.subject CSF
dc.subject Height Functions
dc.title A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension
dc.type Master Thesis
dc.date.updated 2021-09-15T01:41:43Z
dc.language.rfc3066 eng
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Mechanical Engineering
dc.type.qualificationlevel Masters
dc.type.qualificationlevel MSc
dc.identifier.apacitation Oomar, M. Y. (2021). <i>A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension</i>. (). ,Faculty of Engineering and the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/33935 en_ZA
dc.identifier.chicagocitation Oomar, Muhammad Yusufali. <i>"A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension."</i> ., ,Faculty of Engineering and the Built Environment ,Department of Mechanical Engineering, 2021. http://hdl.handle.net/11427/33935 en_ZA
dc.identifier.vancouvercitation Oomar MY. A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension. []. ,Faculty of Engineering and the Built Environment ,Department of Mechanical Engineering, 2021 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/33935 en_ZA
dc.identifier.ris TY - Master Thesis AU - Oomar, Muhammad Yusufali AB - This work presents an all-Mach method for two-phase inviscid flow in the presence of surface tension. A modified version of the Hartens, Lax, Leer and Contact (HLLC) approximate Riemann solver based on Garrick et al. [1] is developed and combined with the popular Volume of Fluid (VoF) method: Compressive Interface Capturing Scheme for Arbitrary Meshes (CICSAM). This novel combination yields a scheme with both HLLC shock capturing as well as accurate liquid-gas interface tracking characteristics. To ensure compatibility with VoF, the Monotone Upstream-centred Scheme for Conservation Laws (MUSCL) [2] is applied to non-conservative (primitive) variables, which yields both robustness and accuracy. Liquid-gas interface curvature is computed via both height functions [3, 4] and the convolution method [5]. This is in the interest of applicability to both cartesian and arbitrary meshes. The author emphasizes the use of VoF in the interest of surface tension modelling accuracy. The method is validated using a range of test-cases available in literature. The results show flow features that are in agreement with experimental and benchmark data. In particular, the use of the HLLC-VoF combination leads to a sharp volume fraction and energy field with improved accuracy (up to secondorder). DA - 2021_ DB - OpenUCT DP - University of Cape Town KW - VoF KW - Compressible KW - Surface Tension KW - CSF KW - Height Functions LK - https://open.uct.ac.za PY - 2021 T1 - A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension TI - A Volume of Fluid (VoF) based all-mach HLLC Solver for Multi-Phase Compressible Flow with Surface-Tension UR - http://hdl.handle.net/11427/33935 ER - en_ZA


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