The effect of variable viscosity on boundary-layer heat transfer in a porous medium

N. E. Ramírez, Avelino E Saez

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this work we present a theoretical analysis of forced-convection heat transfer over a flat surface imbedded in a saturated porous medium, considering that the viscosity of the fluid varies with temperature. The velocity and temperature profiles are described by means of a similarity solution. The effect of viscosity variations is quantified for the case of a fluid whose dependence of viscosity on temperature is linear. Illustrative results indicate that, for liquids, this effect should be taken into account, even for relatively low temperature gradients. This confirms experimental observations made in previous works.

Original languageEnglish (US)
Pages (from-to)477-488
Number of pages12
JournalInternational Communications in Heat and Mass Transfer
Volume17
Issue number4
DOIs
StatePublished - 1990
Externally publishedYes

Fingerprint

Porous materials
boundary layers
Boundary layers
heat transfer
Viscosity
viscosity
Fluids
fluids
forced convection
Forced convection
temperature profiles
Thermal gradients
Temperature
flat surfaces
temperature gradients
velocity distribution
Heat transfer
temperature
Liquids
liquids

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

The effect of variable viscosity on boundary-layer heat transfer in a porous medium. / Ramírez, N. E.; Saez, Avelino E.

In: International Communications in Heat and Mass Transfer, Vol. 17, No. 4, 1990, p. 477-488.

Research output: Contribution to journalArticle

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