Nusselt number data scattering in natural convection in porous media

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Analytical solutions derived in this paper confirm the experimental and numerical results revealing widespread Nusselt number data scattering in natural convection in porous media. The weak non-linear method of solution is used to evaluate the Nusselt number in a porous layer heated from below and subject to weak boundary and domain imperfections. Little attention has been paid so far to the effect that the lower branch of the imperfect bifurcation has on the average Nusselt number. The results presented in this paper demonstrate the latter effect and explain the reason behind the scattering of data. The comparison of the results with existing experimental and numerical data confirms the findings. In addition the latter effect is shown to be essential in ones ability to control heat transfer enhancement via natural convection in porous metal foams, for example.

Original languageEnglish (US)
Title of host publication2010 14th International Heat Transfer Conference, IHTC 14
Pages853-863
Number of pages11
DOIs
StatePublished - Dec 1 2010
Event2010 14th International Heat Transfer Conference, IHTC 14 - Washington, DC, United States
Duration: Aug 8 2010Aug 13 2010

Publication series

Name2010 14th International Heat Transfer Conference, IHTC 14
Volume6

Other

Other2010 14th International Heat Transfer Conference, IHTC 14
CountryUnited States
CityWashington, DC
Period8/8/108/13/10

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Vadasz, P. (2010). Nusselt number data scattering in natural convection in porous media. In 2010 14th International Heat Transfer Conference, IHTC 14 (pp. 853-863). (2010 14th International Heat Transfer Conference, IHTC 14; Vol. 6). https://doi.org/10.1115/IHTC14-22155