Wind and barometric pressure effects on the heat transfer fluctuations within Northern waste rock piles
Nam Pham, David C. Sego, Lukas U. Arenson, Richard Amos, David Blowes, Leslie Smith
In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost ConferenceSession: M1-E
ABSTRACT: Knowledge of the behaviour of internal pile temperatures is of significance in reaching and maintaining freezing temperatures within potentially acid generating waste rock materials. Convective heat transfer in porous media is a complex process involving free and forced movement of air, which affects the heat transfer in the waste pile. The pressure induced by wind and/or the variation in the ambient atmospheric pressure result in subsurface flow of air within a waste rock pile. The magnitude of pressure fluctuation dissipates rapidly with depth and this pressure is an important boundary condition in the magnitudes and frequencies of the temperature signals deep within the pile.
RÉSUMÉ: La connaissance des températures internes de piles rocheuse est de l'importance dans l'atteinte et le maintien des températures de congélation dans les matériaux potentiellement produisant d'acide. La convection dans des médias poreux est un processus complexe comportant le mouvement libre et forcée d'air, qui affecte le transfert thermique dans la pile de la roche de rebut. La pression induite par le vent et/ou la variation de la pression atmosphérique ambiante produit l'écoulement d'air dans une pile rocheux. L'importance de fluctuation de pression absorbe rapidement avec la profondeur et cette pression est une condition aux limites important dans des signaux de la température interne.
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Nam Pham; David C. Sego; Lukas U. Arenson; Richard Amos; David Blowes; Leslie Smith (2010) Wind and barometric pressure effects on the heat transfer fluctuations within Northern waste rock piles in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GEO2010_080,
author = Nam Pham; David C. Sego; Lukas U. Arenson; Richard Amos; David Blowes; Leslie Smith,
title = Wind and barometric pressure effects on the heat transfer fluctuations within Northern waste rock piles ,
year = 2010
}
title = Wind and barometric pressure effects on the heat transfer fluctuations within Northern waste rock piles ,
year = 2010
}