Search Results for author: Aleksandra Pachalieva

Found 4 papers, 1 papers with code

Learning the Factors Controlling Mineralization for Geologic Carbon Sequestration

no code implementations20 Dec 2023 Aleksandra Pachalieva, Jeffrey D. Hyman, Daniel O'Malley, Hari Viswanathan, Gowri Srinivasan

We found that the dissolution reaction rate constant of quartz and the distance to the flowing backbone in the fracture network are the two most important features that control the amount of quartz left in the system.

Predictive Scale-Bridging Simulations through Active Learning

no code implementations20 Sep 2022 Satish Karra, Mohamed Mehana, Nicholas Lubbers, Yu Chen, Abdourahmane Diaw, Javier E. Santos, Aleksandra Pachalieva, Robert S. Pavel, Jeffrey R. Haack, Michael McKerns, Christoph Junghans, Qinjun Kang, Daniel Livescu, Timothy C. Germann, Hari S. Viswanathan

Throughout computational science, there is a growing need to utilize the continual improvements in raw computational horsepower to achieve greater physical fidelity through scale-bridging over brute-force increases in the number of mesh elements.

Active Learning

Physics-informed machine learning with differentiable programming for heterogeneous underground reservoir pressure management

1 code implementation21 Jun 2022 Aleksandra Pachalieva, Daniel O'Malley, Dylan Robert Harp, Hari Viswanathan

To tackle this, we use differentiable programming with a full-physics model and machine learning to determine the fluid extraction rates that prevent over-pressurization at critical reservoir locations.

BIG-bench Machine Learning Management +2

Molecular dynamics lattice gas equilibrium distribution function for Lennard-Jones particles

no code implementations4 Jan 2021 Aleksandra Pachalieva, Alexander J. Wagner

We derive a lattice Boltzmann equilibrium distribution function from the Poisson weighted sum of Gaussians model and compare it to a measured equilibrium distribution function from molecular dynamics data and to an analytical approximation of the equilibrium distribution function from a single Gaussian probability distribution function.

Computational Physics

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