A model for predicting coupled heat and mass transfers in unsaturated partially frozen soil

Giakoumakis, SG

dc.contributor.author	Giakoumakis, SG	en
dc.date.accessioned	2014-03-01T01:09:40Z
dc.date.available	2014-03-01T01:09:40Z
dc.date.issued	1994	en
dc.identifier.issn	0142-727X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11130
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0028666118&partnerID=40&md5=5f4909c6674e98d6d239f993a4f1f11b	en
dc.subject	heat and mass transfers	en
dc.subject	medium hydraulic properties	en
dc.subject	soil freezing	en
dc.subject	surface-tension viscous-flow theory	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	freezing	en
dc.subject.other	frozen soil	en
dc.subject.other	model	en
dc.subject.other	temperature	en
dc.subject.other	water content	en
dc.subject.other	Freezing	en
dc.subject.other	Heat Transfer	en
dc.subject.other	Mass Transfer	en
dc.subject.other	Porous Media-Flow Through	en
dc.subject.other	Soils	en
dc.title	A model for predicting coupled heat and mass transfers in unsaturated partially frozen soil	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	A one-dimensional model is used for simulating coupled heat and mass transfers in a vertical porous medium column, with the upper end subjected to a negative temperature. The model can predict accurately both temperature and total water content profiles along the column, provided that both heat- and mass-conservation equations are solved simultaneously. On the contrary, when only heat transfer equation is solved, the position of the moving freezing front (isothermal of 273.16-degrees-K), is systematically underestimated. Moreover, it was shown that the commonly used surface-tension viscous-flow theory for estimating the temperature-dependent soil hydraulic properties (i.e., matric potential versus liquid water content, h[THETA1], and hydraulic conductivity versus liquid water content, K[THETA1]), when combined with the model, fails to describe satisfactorily the evolution of the freezing process.	en
heal.publisher	BUTTERWORTH-HEINEMANN	en
heal.journalName	International Journal of Heat and Fluid Flow	en
dc.identifier.isi	ISI:A1994NG28900011	en
dc.identifier.volume	15	en
dc.identifier.issue	2	en
dc.identifier.spage	163	en
dc.identifier.epage	171	en