Department: Mechanical & Aerospace Engineering
Stefan Llewellyn Smith
Name: Devin T. Conroy
Email: dconroy @ ucsd.edu
Grad Year: 2007
Below the sea floor methane gas is known to exist in extremely large quantities, accumulating in the sediment of the deep and cold oceanic regions. Due to the large hydrostatic pressure and cool temperatures the gas reacts with the surrounding water to form a crystalline substance known as a clathrate. The fate of these reserves is very important to the climate on earth because methane is a much more efficient greenhouse gas compared to carbon dioxide. Motivated in part by this concern I will present a mathematical model governing the rate of dissociation of gas hydrates in the sediment in response to an increase in water temperature. The model incorporates a moving boundary Stefan problem with multiphase flow in a porous medium. We present a numerical solution to the resultant equations for temperature and saturation profiles as a function of time.
<< Back to Posters or Search Results