Print Email Facebook Twitter Turbulence Modeling for Heat Transfer to Supercritical Pipe Flows Title Turbulence Modeling for Heat Transfer to Supercritical Pipe Flows Author Patel, A. Contributor Pecnik, R. (mentor) Nemati, H. (mentor) Faculty Mechanical, Maritime and Materials Engineering Department Process and Energy Programme Energy Technology Date 2013-08-23 Abstract In the present work, a comprehensive review on different mechanisms affecting heat transfer characteristics of supercritical flows is carried out. The physical mechanism of heat transfer is then further investigated using inhouse DNS data. In addition, RANS simulations of a heated vertical pipe with supercritical CO2 are carried out using conventional low-Reynolds number eddy viscosity turbulence models. The turbulence models are implemented in an inhouse FORTRAN code and validated using canonical cases available in the literature. The performance of the turbulence models is assessed by comparison with the inhouse DNS data. Furthermore, a theoretical framework has been established to take into account the large thermophysical property variations close to pseudo-critical point in the RANS averaged governing equations. Subject turbulenceturbulence modelingRANSsupercriticalheat transferDNS To reference this document use: http://resolver.tudelft.nl/uuid:bfea58b0-f410-4eef-a94d-7eca89bbd059 Embargo date 2014-08-01 Part of collection Student theses Document type master thesis Rights (c) 2013 Patel, A. Files PDF mscThesis_AshishPatel.pdf 2.47 MB Close viewer /islandora/object/uuid:bfea58b0-f410-4eef-a94d-7eca89bbd059/datastream/OBJ/view