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AN EFFECTIVE EQUATION GOVERNING CONVECTIVE TRANSPORT IN POROUS MEDIA.

Author(s) : GEORGIADIS J. G., CATTON I.

Type of article: Article

Summary

THE FINE STRUCTURE OF DISORDERED POROUS MEDIA CAUSES MICROSCOPIC VELOCITY FLUCTUATIONS. THE EFFECT OF THE SPATIAL AND TEMPORAL RANDOMNESS OF THE INTERSTITIAL VELOCITY FIELD ON THE CONVECTIVE TRANSPORT OF A SCALAR (HEAT OR MASS) IS INVESTIGATED ANALYTICALLY. FOR A UNIFORM MEAN VELOCITY PROFILE, THE EFFECTIVE HEAT TRANSPORT EQUATION IS OBTAINED AS THE EQUATION GOVERNING THE TRANSPORT OF THE ENSEMBLE AVERAGE OF THE SCALAR UNDER CONDITIONS OF STEADY OR UNSTEADY RANDOM FIELDS. IT IS SHOWN THAT THE EFFECTIVE TRANSPORT COEFFICIENT IS ENHANCED BY A HYDRODYNAMIC DISPERSIVE COMPONENT.

Details

  • Original title: AN EFFECTIVE EQUATION GOVERNING CONVECTIVE TRANSPORT IN POROUS MEDIA.
  • Record ID : 1989-0508
  • Languages: English
  • Source: J. Heat Transf. - vol. 110 - n. 3
  • Publication date: 1988
  • Document available for consultation in the library of the IIR headquarters only.

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