Search Results - "Valocchi, Albert"

Lattice Boltzmann phase-field modeling of thermocapillary flows in a confined microchannel by Liu, Haihu, Valocchi, Albert J., Zhang, Yonghao, Kang, Qinjun

“…To understand how thermocapillary forces manipulate the droplet motion in a confined microchannel, a lattice Boltzmann phase-field model is developed to…”
Get full text

Lattice Boltzmann simulation of immiscible two‐phase flow with capillary valve effect in porous media by Xu, Zhiyuan, Liu, Haihu, Valocchi, Albert J.

“…A new algorithm for imposing the contact angle on solid surfaces is proposed in the Lattice Boltzmann color‐gradient model. The capability and accuracy of this…”
Get full text

A Bayesian approach to improved calibration and prediction of groundwater models with structural error by Xu, Tianfang, Valocchi, Albert J.

“…Numerical groundwater flow and solute transport models are usually subject to model structural error due to simplification and/or misrepresentation of the real…”
Get full text

Global Sensitivity Analysis for multivariate output using Polynomial Chaos Expansion by Garcia-Cabrejo, Oscar, Valocchi, Albert

“…Many mathematical and computational models used in engineering produce multivariate output that shows some degree of correlation. However, conventional…”
Get full text

Data-driven methods to improve baseflow prediction of a regional groundwater model by Xu, Tianfang, Valocchi, Albert J.

“…Physically‐based models of groundwater flow are powerful tools for water resources assessment under varying hydrologic, climate and human development…”
Get full text

Mixing-Limited Reactions in Porous Media by Valocchi, Albert J., Bolster, Diogo, Werth, Charles J.

“…Mixing-driven reactions in porous media are ubiquitous and span natural and engineered environments, yet predicting where and how quickly reactions occur is…”
Get full text

Lattice Boltzmann simulations of liquid CO2 displacing water in a 2D heterogeneous micromodel at reservoir pressure conditions by Chen, Yu, Li, Yaofa, Valocchi, Albert J., Christensen, Kenneth T.

“…We employed the color-fluid lattice Boltzmann multiphase model to simulate liquid CO2 displacing water documented in experiments in a 2D heterogeneous…”
Get full text

Pore-scale study of dissolution-induced changes in permeability and porosity of porous media by Kang, Qinjun, Chen, Li, Valocchi, Albert J., Viswanathan, Hari S.

“…•Dissolution-induced changes in permeability/porosity studied at the pore scale.•Permeability porosity relationship explored for a wide range of Pe and Da.•A…”
Get full text

Quantifying model structural error: Efficient Bayesian calibration of a regional groundwater flow model using surrogates and a data‐driven error model by Xu, Tianfang, Valocchi, Albert J., Ye, Ming, Liang, Feng

“…Groundwater model structural error is ubiquitous, due to simplification and/or misrepresentation of real aquifer systems. During model calibration, the basic…”
Get full text

Inertial Effects During the Process of Supercritical CO2 Displacing Brine in a Sandstone: Lattice Boltzmann Simulations Based on the Continuum‐Surface‐Force and Geometrical Wetting Models by Chen, Yu, Valocchi, Albert J., Kang, Qinjun, Viswanathan, Hari S.

“…Inertial effects during the process of supercritical CO2 displacing brine in porous media may not be negligible according to recent studies. Capturing the…”
Get full text

Pore-scale simulation of liquid CO2 displacement of water using a two-phase lattice Boltzmann model by Liu, Haihu, Valocchi, Albert J., Werth, Charles, Kang, Qinjun, Oostrom, Mart

“…•A color-fluid LBM is developed for two-phase flows in porous media.•We simulate LCO2 displacement of water in two different pore networks.•Predicted…”
Get full text

Multiphase lattice Boltzmann simulations for porous media applications: A review by Liu, Haihu, Kang, Qinjun, Leonardi, Christopher R., Schmieschek, Sebastian, Narváez, Ariel, Jones, Bruce D., Williams, John R., Valocchi, Albert J., Harting, Jens

“…Over the last two decades, lattice Boltzmann methods have become an increasingly popular tool to compute the flow in complex geometries such as porous media…”
Get full text

Pore-scale simulation of mixing-induced calcium carbonate precipitation and dissolution in a microfluidic pore network by Yoon, Hongkyu, Valocchi, Albert J., Werth, Charles J., Dewers, Thomas

“…We develop a 2‐D pore scale model of coupled fluid flow, reactive transport, and calcium carbonate (CaCO3) precipitation and dissolution. The model is used to…”
Get full text

Comprehensive comparison of pore-scale models for multiphase flow in porous media by Zhao, Benzhong, MacMinn, Christopher W., Primkulov, Bauyrzhan K., Chen, Yu, Valocchi, Albert J., Zhao, Jianlin, Kang, Qinjun, Bruning, Kelsey, McClure, James E., Miller, Cass T., Fakhari, Abbas, Bolster, Diogo, Hiller, Thomas, Brinkmann, Martin, Cueto-Felgueroso, Luis, Cogswell, Daniel A., Verma, Rahul, Prodanovic, Maša, Maes, Julien, Geiger, Sebastian, Vassvik, Morten, Hansen, Alex, Segre, Enrico, Holtzman, Ran, Yang, Zhibing, Yuan, Chao, Chareyre, Bruno, Juanes, Ruben

“…Multiphase flows in porous media are important in many natural and industrial processes. Pore-scale models for multiphase flows have seen rapid development in…”
Get full text

Modeling and simulation of thermocapillary flows using lattice Boltzmann method by Liu, Haihu, Zhang, Yonghao, Valocchi, Albert J.

“…To understand how thermocapillary forces manipulate droplet motion in microfluidic channels, we develop a lattice Boltzmann (LB) multiphase model to simulate…”
Get full text

Debates—Stochastic subsurface hydrology from theory to practice: Does stochastic subsurface hydrology help solving practical problems of contaminant hydrogeology? by Cirpka, Olaf A., Valocchi, Albert J.

“…While stochastic subsurface hydrology has been tremendously successful in understanding how the spatial variability of hydraulic conductivity affects…”
Get full text

An improved cellular automaton method to model multispecies biofilms by Tang, Youneng, Valocchi, Albert J.

“…Biomass-spreading rules used in previous cellular automaton methods to simulate multispecies biofilm introduced extensive mixing between different biomass…”
Get full text

Pore-Scale Simulations of Gas Displacing Liquid in a Homogeneous Pore Network Using the Lattice Boltzmann Method by Liu, Haihu, Valocchi, Albert J., Kang, Qinjun, Werth, Charles

“…A lattice Boltzmann high-density-ratio model, which uses diffuse interface theory to describe the interfacial dynamics and was proposed originally by Lee and…”
Get full text

Flux‐Corrected Transport with MT3DMS for Positive Solution of Transport with Full‐Tensor Dispersion by Yan, Shuo, Valocchi, Albert J.

“…Solute transport is usually modeled by the advection‐dispersion‐reaction equation. In the standard approach, mechanical dispersion is a tensor with principal…”
Get full text

Pore-scale simulation of flow of CO2 and brine in reconstructed and actual 3D rock cores by Tahmasebi, Pejman, Sahimi, Muhammad, Kohanpur, Amir H., Valocchi, Albert

“…Sequestration of CO2 in deep underground saline formations is currently under study as a practical approach for reducing emissions of CO2 from power plants…”
Get full text