Numerical modeling of convection-diffusion phase change problems

Arampatzis, G; Assimacopoulos, D

dc.contributor.author	Arampatzis, G	en
dc.contributor.author	Assimacopoulos, D	en
dc.date.accessioned	2014-03-01T01:13:56Z
dc.date.available	2014-03-01T01:13:56Z
dc.date.issued	1998	en
dc.identifier.issn	0178-7675	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12802
dc.subject	Continuum Model	en
dc.subject	Latent Heat	en
dc.subject	Numerical Model	en
dc.subject	Numerical Technique	en
dc.subject	Phase Change	en
dc.subject	Strong Coupling	en
dc.subject.classification	Mathematics, Interdisciplinary Applications	en
dc.subject.classification	Mechanics	en
dc.subject.other	Continuum mechanics	en
dc.subject.other	Diffusion	en
dc.subject.other	Heat convection	en
dc.subject.other	Interpolation	en
dc.subject.other	Mathematical models	en
dc.subject.other	Thermal effects	en
dc.subject.other	Convection diffusion phase change	en
dc.subject.other	Phase transitions	en
dc.title	Numerical modeling of convection-diffusion phase change problems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s004660050319	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s004660050319	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	A numerical methodology is presented for the modeling of convection-diffusion controlled mushy region change problems. An efficient and accurate non-staggered control volume method, based on the momentum interpolation practice and on a high-order convection differencing scheme, is proposed for the solution of the continuum model equation. Suitable numerical techniques are implemented to overcome the numerical instability problems resulting from the strong coupling between the equations of the model. Special attention is given on the efficient treatment of the latent head evolution in the energy equation. A new numerical technique is developed which accounts for the dependence of the latent heat on the variation of temperature and concentration fields. The proposed method is applied on two phase change problems. Satisfactory agreement with previously published results is observed.	en
heal.publisher	SPRINGER VERLAG	en
heal.journalName	Computational Mechanics	en
dc.identifier.doi	10.1007/s004660050319	en
dc.identifier.isi	ISI:000074177700019	en
dc.identifier.volume	21	en
dc.identifier.issue	4-5	en
dc.identifier.spage	409	en
dc.identifier.epage	415	en