Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Role of Thermally-Induced Buoyant Flow in Altering Energy Harvesting Using Geothermal Piles
This paper presents a numerical model and its application to analyze thermally induced pore fluid flow in saturated soil surrounding geothermal piles. Coupled effects of heat conduction and convection on thermal performance of heat exchanger piles in saturated soil are considered. Heat transfer energy equation and Brinkman’s momentum equation that considers a Boussinesq buoyancy term are coupled to analyze convective heat transfer through pore fluid flow. A hybrid explicit-implicit approach is employed in the finite difference solution scheme to calculate pore fluid velocity and temperature increments within the ground. Results indicate that thermal operation of geothermal piles alters pore fluid density, buoyant flow occurs (even under hydrostatic condition) within saturated soil in the vicinity of heat exchanger piles, and thermally induced pore water flow under saturated condition facilitates pile-soil heat exchange.
Role of Thermally-Induced Buoyant Flow in Altering Energy Harvesting Using Geothermal Piles
This paper presents a numerical model and its application to analyze thermally induced pore fluid flow in saturated soil surrounding geothermal piles. Coupled effects of heat conduction and convection on thermal performance of heat exchanger piles in saturated soil are considered. Heat transfer energy equation and Brinkman’s momentum equation that considers a Boussinesq buoyancy term are coupled to analyze convective heat transfer through pore fluid flow. A hybrid explicit-implicit approach is employed in the finite difference solution scheme to calculate pore fluid velocity and temperature increments within the ground. Results indicate that thermal operation of geothermal piles alters pore fluid density, buoyant flow occurs (even under hydrostatic condition) within saturated soil in the vicinity of heat exchanger piles, and thermally induced pore water flow under saturated condition facilitates pile-soil heat exchange.
Role of Thermally-Induced Buoyant Flow in Altering Energy Harvesting Using Geothermal Piles
Ghasemi-Fare, Omid (Autor:in) / Basu, Prasenjit (Autor:in)
Geotechnical Frontiers 2017 ; 2017 ; Orlando, Florida
Geotechnical Frontiers 2017 ; 113-123
30.03.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Role of Thermally-Induced Buoyant Flow in Altering Energy Harvesting Using Geothermal Piles
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