Natural convection and thermocapillary flow of non-Newtonian fluids in layered systems heated from the side in reduced gravity

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Abstract

The dynamics of the flow in two layered systems heated from the side is investigated both when the fluids are viscoinelastic and viscoelastic. The system is two dimensional and confined to a box of low aspect ratio in reduced gravity. Interfaces are assumed to be flat. The free top surface is taken to be insulated together with the bottom wall. Results are reported for both high and low values of the interfacial Marangoni number when a low Prandtl number Newtonian fluid in the lower layer is encapsulated by a high Prandtl number viscoinelastic or viscoelastic fluid in the top layer.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Volume246
Publication statusPublished - 1998

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Non Newtonian flow
Natural convection
Gravitation
Prandtl number
Fluids
Aspect ratio

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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title = "Natural convection and thermocapillary flow of non-Newtonian fluids in layered systems heated from the side in reduced gravity",
abstract = "The dynamics of the flow in two layered systems heated from the side is investigated both when the fluids are viscoinelastic and viscoelastic. The system is two dimensional and confined to a box of low aspect ratio in reduced gravity. Interfaces are assumed to be flat. The free top surface is taken to be insulated together with the bottom wall. Results are reported for both high and low values of the interfacial Marangoni number when a low Prandtl number Newtonian fluid in the lower layer is encapsulated by a high Prandtl number viscoinelastic or viscoelastic fluid in the top layer.",
author = "Siginer, {Dennis A.}",
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journal = "American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED",
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AB - The dynamics of the flow in two layered systems heated from the side is investigated both when the fluids are viscoinelastic and viscoelastic. The system is two dimensional and confined to a box of low aspect ratio in reduced gravity. Interfaces are assumed to be flat. The free top surface is taken to be insulated together with the bottom wall. Results are reported for both high and low values of the interfacial Marangoni number when a low Prandtl number Newtonian fluid in the lower layer is encapsulated by a high Prandtl number viscoinelastic or viscoelastic fluid in the top layer.

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