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pubmed-article:1030421rdf:typepubmed:Citationlld:pubmed
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pubmed-article:1030421pubmed:dateCreated1977-11-25lld:pubmed
pubmed-article:1030421pubmed:abstractTextThe transient-state external heat and mass-transfer during freeze-drying was investigated. The spaces between the heaters and porous product-surfaces were simulated as semi porous channels, with mass-injection into the channels from the sublimation of ice. The energy, vorticity, concentration, and stream function/vorticity equations were the governing equations used as the mathematical model. These partial differential-equations were solved by finite-difference, numberical methods. The Fromm, Alternating Direction Implicity, and Upwind Difference methods were used in solving the parabolic equations; and the Successive Over Relaxation method was adopted to solve the elliptic equation. Numerical solutions obtained from the digital computer for the external heat and mass-transfer during freeze-drying were computed for Reynolds numbers equal t0 0.1, 1.0, and 4.0 and Grashof numbers equal to 0, +/- 100, and +/- 1000. The Prandtl number selected for water vapor was 1.0. One set of these solutions were compared to a known, analytical solution, and good agreement was obtained. The external heat and mass-transfer mechanism was then combined with the internal-heat-transfer mechanism developed by Dyer and Sunderland (1968), and the equations describing the relation of heater temperatures and product surface-temperatures developed by Massey and Sunderland (1972). A thorough computer-simulation was carried out for the combined heat and mass-transfer mechanism during freeze-drying of food products.lld:pubmed
pubmed-article:1030421pubmed:languageenglld:pubmed
pubmed-article:1030421pubmed:journalhttp://linkedlifedata.com/r...lld:pubmed
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pubmed-article:1030421pubmed:statusMEDLINElld:pubmed
pubmed-article:1030421pubmed:monthOctlld:pubmed
pubmed-article:1030421pubmed:issn0301-5149lld:pubmed
pubmed-article:1030421pubmed:authorpubmed-author:JordanW KWKlld:pubmed
pubmed-article:1030421pubmed:authorpubmed-author:KuA CAClld:pubmed
pubmed-article:1030421pubmed:authorpubmed-author:FurryR BRBlld:pubmed
pubmed-article:1030421pubmed:authorpubmed-author:DropkinDDlld:pubmed
pubmed-article:1030421pubmed:issnTypePrintlld:pubmed
pubmed-article:1030421pubmed:volume36lld:pubmed
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pubmed-article:1030421pubmed:authorsCompleteYlld:pubmed
pubmed-article:1030421pubmed:pagination207-19lld:pubmed
pubmed-article:1030421pubmed:dateRevised2008-11-21lld:pubmed
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pubmed-article:1030421pubmed:year1976lld:pubmed
pubmed-article:1030421pubmed:articleTitleNumerical analysis of heat and mass transfer during freeze-drying.lld:pubmed
pubmed-article:1030421pubmed:publicationTypeJournal Articlelld:pubmed