Matches in SemOpenAlex for { <https://semopenalex.org/work/W101497372> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W101497372 abstract "This thesis addresses heat conduction in granular systems both under static and slow flow conditions with and without the presence of astagnant interstitial fluid. A novel discrete simulation technique for granular heat transfer, the Thermal Particle Dynamics (TPD) method hasbeen developed. By modeling particle-particle interactions, bed heterogeneities -- e.g., mechanical and thermal -- are directly accountedfor and transient temperature distribution are obtained at the particle level. This technique, based on the Discrete Element Method, not onlysheds light on fundamental issues in heat conduction in particulate systems, but also provides a valuable test-bench for existingcontinuous theories. Computational results, as well as supporting experiments coupled with existing theoretical models are used to probethe validity of the proposed simulation technique. Studies on heat conduction through static beds of particles indicate that stress and contact heterogeneities -- due primarily to theexistence of localized ``chains' of particles which support the majority of an imposed load (stress chains) -- may cause dramaticchanges in the way that heat is transported by conduction. It is found that by matching the microstructure of an experimental system onlyqualitatively, quantitatively accurate estimates of effective properties are possible, without requiring adjustable parameters. Onekey result in this study reveals that an important consideration has been missing from previous granular conduction studies -- the stressdistribution in the particle bed. Extensions of TPD to incorporate the ability to model heat transfer in particulate systems in the presenceof an interstitial fluid indicate that a good qualitative and quantitative agreement between measured and calculated values of theeffective thermal conductivity for a wide variety of materials in the presence of both liquid and/or gas are possible. Simulation results for slow granular flows -- e.g., simple shear cell and a rotating drum -- indicate that in both cases there is anenhancement of the effective thermal conductivity with increase in the shear rate due to enhanced mixing of the particles. These results arein agreement with previous theoretical and experimental investigations. In contrast to the behavior found at high shear rates, where the thermal conductivity is proportional to the shear rate, a complex non-linear relation is found for the effective conductivity in granular flows at low shear rates. This observation has not beenpreviously reported. It is argued that a balance between heat conduction and convection is necessary to explain these observations." @default.
- W101497372 created "2016-06-24" @default.
- W101497372 creator A5000794849 @default.
- W101497372 date "2002-03-18" @default.
- W101497372 modified "2023-09-26" @default.
- W101497372 title "Discrete Modeling of Heat Conduction in Granular Media" @default.
- W101497372 hasPublicationYear "2002" @default.
- W101497372 type Work @default.
- W101497372 sameAs 101497372 @default.
- W101497372 citedByCount "9" @default.
- W101497372 countsByYear W1014973722012 @default.
- W101497372 crossrefType "journal-article" @default.
- W101497372 hasAuthorship W101497372A5000794849 @default.
- W101497372 hasConcept C111368507 @default.
- W101497372 hasConcept C121332964 @default.
- W101497372 hasConcept C127313418 @default.
- W101497372 hasConcept C142014798 @default.
- W101497372 hasConcept C159985019 @default.
- W101497372 hasConcept C171872576 @default.
- W101497372 hasConcept C172100665 @default.
- W101497372 hasConcept C192562407 @default.
- W101497372 hasConcept C204530211 @default.
- W101497372 hasConcept C2778517922 @default.
- W101497372 hasConcept C32568104 @default.
- W101497372 hasConcept C50517652 @default.
- W101497372 hasConcept C57879066 @default.
- W101497372 hasConcept C97346530 @default.
- W101497372 hasConcept C97355855 @default.
- W101497372 hasConceptScore W101497372C111368507 @default.
- W101497372 hasConceptScore W101497372C121332964 @default.
- W101497372 hasConceptScore W101497372C127313418 @default.
- W101497372 hasConceptScore W101497372C142014798 @default.
- W101497372 hasConceptScore W101497372C159985019 @default.
- W101497372 hasConceptScore W101497372C171872576 @default.
- W101497372 hasConceptScore W101497372C172100665 @default.
- W101497372 hasConceptScore W101497372C192562407 @default.
- W101497372 hasConceptScore W101497372C204530211 @default.
- W101497372 hasConceptScore W101497372C2778517922 @default.
- W101497372 hasConceptScore W101497372C32568104 @default.
- W101497372 hasConceptScore W101497372C50517652 @default.
- W101497372 hasConceptScore W101497372C57879066 @default.
- W101497372 hasConceptScore W101497372C97346530 @default.
- W101497372 hasConceptScore W101497372C97355855 @default.
- W101497372 hasLocation W1014973721 @default.
- W101497372 hasOpenAccess W101497372 @default.
- W101497372 hasPrimaryLocation W1014973721 @default.
- W101497372 hasRelatedWork W1533088739 @default.
- W101497372 hasRelatedWork W1966037689 @default.
- W101497372 hasRelatedWork W1981505401 @default.
- W101497372 hasRelatedWork W2007456816 @default.
- W101497372 hasRelatedWork W2015041220 @default.
- W101497372 hasRelatedWork W2020346358 @default.
- W101497372 hasRelatedWork W2033933843 @default.
- W101497372 hasRelatedWork W2048098772 @default.
- W101497372 hasRelatedWork W2057406871 @default.
- W101497372 hasRelatedWork W2068996710 @default.
- W101497372 hasRelatedWork W2069336323 @default.
- W101497372 hasRelatedWork W2073239826 @default.
- W101497372 hasRelatedWork W2073775990 @default.
- W101497372 hasRelatedWork W2123555994 @default.
- W101497372 hasRelatedWork W2128288622 @default.
- W101497372 hasRelatedWork W2163209118 @default.
- W101497372 hasRelatedWork W2347486028 @default.
- W101497372 hasRelatedWork W2755332063 @default.
- W101497372 hasRelatedWork W3023809488 @default.
- W101497372 hasRelatedWork W601753258 @default.
- W101497372 isParatext "false" @default.
- W101497372 isRetracted "false" @default.
- W101497372 magId "101497372" @default.
- W101497372 workType "article" @default.