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DeFord Lecture: Cristian Proistosescu

February, 19 2019

Time: 4:00 PM - 5:00 PM
Location: JGB 2.324

DeFord Lecture: Yi Ming

February, 21 2019

Time: 4:00 PM - 5:00 PM
Location: JGB 2.324

UTIG Seminar Series: Baole Wen, UT ICES

February, 22 2019

Time: 10:30 AM - 12:00 PM
Location: PRC ROC Room 1.603

Click to watch the seminar online.

Speaker: Baole Wen, Bureau of Economic Geology, Jackson School of Geosciences & Center for Petroleum & Geosystems Engineering, Institute for Computational Engineering and Sciences, The University of Texas at Austin

Host: Kehua You

Title: Modeling of convective CO2 dissolution in a closed porous media system: from low-pressure ideal-gas to high-pressure real-gas conditions

Abstract: Motivated by geological carbon dioxide (CO2) storage, many recent studies have investigated the fluid dynamics of solutal convection in porous media. Here we study the convective dissolution of CO2 in a closed porous media system, where the pressure in the gas declines as convection proceeds. This introduces a negative feedback that reduces the convective dissolution rate even before the brine becomes saturated. We analyze the case of an ideal gas with a solubility given by Henry’s law, in the limits of very low and very high Rayleigh numbers. The equilibrium state in this system is determined by the dimensionless dissolution capacity, ?, which gives the fraction of the gas that can be dissolved into the underlying brine. Analytical approximations of the pure diffusion problem with ? > 0 show that the diffusive base state is no longer self-similar and that diffusive mass transfer declines rapidly with time. Direct numerical simulations at high Rayleigh numbers show that no constant flux regime exists for ? > 0; nevertheless, the quantity F/Cs2 remains constant, where F is the dissolution flux and Cs is the dissolved concentration at the top of the domain. Simple mathematical models are developed to predict the evolution of Cs and F for high-Rayleigh-number convection in closed systems. Finally, the modeling is extended to high-pressure & real-gas conditions and verified using laboratory experiments.

UTIG Seminar Series: Pascal Audet, University of Ottawa

March, 01 2019

Time: 10:30 AM - 12:00 PM
Location: PRC ROC Room 1.603

Click to watch online.

Speaker: Pascal Audet, University of Ottawa

Host: Thorsten Becker

De Ford Lecture Series: Mark Jellinek

March, 05 2019

Time: 4:00 PM - 5:00 PM
Location: JGB 2.324

UTIG Brown Bag Seminar: Ian Dalziel, UTIG

March, 05 2019

Time: 12:00 PM - 1:00 PM
Location: PRC ROC Room 1.603

Informal weekly presentations by UTIG students and researchers. Bring your lunch!

Speaker: Ian Dalziel, Research Professor, UTIG

UTIG Seminar Series: Sarah Hörst, Johns Hopkins University

March, 08 2019

Time: 10:30 AM - 12:00 PM
Location: PRC ROC Room 1.603

Click to watch online.

Speaker: Sarah Hörst, Johns Hopkins University

Host: Krista Soderlund

UTIG Brown Bag Seminar: Brandon Shuck, UTIG

March, 12 2019

Time: 12:00 PM - 1:00 PM
Location: PRC ROC Room 1.603

Informal weekly presentations by UTIG students and researchers. Bring your lunch!

Speaker: Brandon Shuck, Graduate Research Assistant, UTIG

UTIG Seminar Series: Alexander Evans, Brown University

March, 15 2019

Time: 10:30 AM - 12:00 PM
Location: PRC ROC Room 1.603

Click to watch online.

Speaker: Alexander Evans, Brown University

Host: Krista Soderlund