A5090690769- Lattice Boltzmann Simulation Studies
- Aerosol Filtration and Electrostatic Precipitation
- Groundwater flow and contamination studies
- Generative Adversarial Networks and Image Synthesis
- Heat and Mass Transfer in Porous Media
- Groundwater and Isotope Geochemistry
- Water resources management and optimization
- Coastal and Marine Dynamics
- Fluid Dynamics and Heat Transfer
- Hydraulic Fracturing and Reservoir Analysis
- Enhanced Oil Recovery Techniques
- Soil and Unsaturated Flow
- Karst Systems and Hydrogeology
- Flood Risk Assessment and Management
- Image and Signal Denoising Methods
- Hydrology and Watershed Management Studies
- Water-Energy-Food Nexus Studies
- Drilling and Well Engineering
- Geophysical and Geoelectrical Methods
- Geological formations and processes
- Fluid Dynamics and Turbulent Flows
- Urban Stormwater Management Solutions
- Coastal wetland ecosystem dynamics
- Sustainability and Climate Change Governance
- Landfill Environmental Impact Studies
Florida International University
2016-2025
United States Geological Survey
2015
University of Kentucky
2000-2013
Weatherford College
2000-2008
University of Connecticut
2002-2005
Utah State University
2001-2002
Silsoe Research Institute
2001
Pioneer (United States)
1992
Connecting to Care
1992
The SEAWAT program is a coupled version of MODFLOW and MT3DMS designed to simulate three-dimensional, variable-density, saturated ground-water flow. Flexible equations were added the allow fluid density be calculated as function one or more species. Fluid may also pressure. effect viscosity variations on flow was included an option. can species, includes additional functions for representing dependence temperature. Although are not explicitly heat transport, temperature simulated species by...
We propose a method for approximating the adhesion parameters in Shan and Chen multicomponent, multiphase lattice Boltzmann model that leads to desired fluid-solid contact angle. The is straightforward application of Young's equation with substitution cohesion parameter density factor fluid-fluid interfacial tension, corresponding tensions.
The primary and key task of binary fluid flow modeling is to track the interface with good accuracy, which usually challenging due sharp-interface limit numerical dispersion. This article concentrates on further development conservative Allen-Cahn equation (ACE) [Geier et al., Phys. Rev. E 91, 063309 (2015)] under framework lattice Boltzmann method (LBM), incorporation incompressible hydrodynamic equations [Liang 89, 053320 (2014)]. Utilizing a modified equilibrium distribution function an...
The lattice Boltzmann method (LBM) has emerged as a powerful tool for simulating the behavior of multiphase fluid systems in complex pore networks. Specifically, single component LBM can simulate interfacial phenomena surface tension and adsorption thus be used modeling fluids such water its vapor porous media. This paper provides an introduction to applications interface configurations partially saturated Key elements this application are fluid‐fluid fluid‐solid interactions that...
The present study demonstrates a methodology for optimization of environmental data acquisition. Based on the premise that worth increases in proportion to its ability reduce uncertainty key model predictions, can be used compare different types, gathered at locations within areas arbitrary complexity. method is applied hypothetical nonlinear, variable density numerical salt and heat transport. relative utilities temperature concentration measurements domain are assessed terms their...
Research Article| January 01, 2009 Prominence of ichnologically influenced macroporosity in the karst Biscayne aquifer: Stratiform "super-K" zones Kevin J. Cunningham; Cunningham * 1U.S. Geological Survey, 3110 SW 9th Avenue, Fort Lauderdale, Florida 33315, USA *E-mail: kcunning@usgs.gov Search for other works by this author on: GSW Google Scholar Michael C. Sukop; Sukop 2Department Earth Sciences, International University, Miami, 33199, Haibo Huang; Huang Pedro F. Alvarez; Alvarez †Present...
A parallel implementation of the three-dimensional Shan-and-Chen multicomponent, multiphase lattice Boltzmann method (LBM) was used to simulate equilibrium distributions two immiscible fluids in porous media. The simulations were successfully validated against cone-beam x-ray microtomographic data on distribution oil (decane), water, and air phases a 5-mm cube medium composed packed quartz sand grains. results confirm that LBM models allow for straightforward incorporation complex pore space...
Key Points With CT data, Lattice Boltzmann methods can measure extreme permeabilites are capable of simulating non‐Darcy flows In some aquifers, occur at low gradients
Dispersivity (α) is a required input parameter in solute‐transport models based on the advection‐dispersion equation (ADE). Normally α obtained from miscible‐displacement experiments. This dependency inverse procedures imposes severe limitation our predictive capability. If solute breakthrough curves and soil hydraulic properties were measured simultaneously, pedotransfer functions could be developed to predict independent measurements. In this study, short (6 cm long) undisturbed columns...
Numerous lattice Boltzmann (LB) methods have been proposed for solution of the convection?diffusion equations (CDE). For 2D problem, D2Q9, D2Q5 or D2Q4 velocity models are usually used. When LB used to solve a CDE coupled with Navier?Stokes equations, boundary conditions found be critically important accurately solving simulations. Following idea regularized scheme (Latt et al 2008 Phys.?Rev.?E 77 056703), condition is proposed. A simple extrapolation also Neumann condition. Spatial...
Originally, the color-gradient model proposed by Rothman and Keller (R–K) was unable to simulate immiscible two-phase flows with different densities. Later, a revised version of R–K Grunau et al. [D. Grunau, S. Chen K. Eggert, Phys. Fluids A: Fluid Dyn. 5, 2557 (1993).] claimed it able high-density contrast. Some studies investigate contrast using this but they are mainly focused on stationary spherical droplet bubble cases. Through theoretical analysis model, we found that in recovered...
The Shan and Chen single component multiphase lattice Boltzmann model is used to simulate homogeneous heterogeneous cavitation. simulations show excellent agreement with the equation of state for cavitation energy considerations based on interface formation bubble expansion
This work serves as an important extension of previous on cavitation simulation [Sukop and Or, Phys. Rev. E 71, 046703 (2005)10.1103/PhysRevE.71.046703]. A modified Shan-Chen single-component multiphase lattice Boltzmann method is used to simulate two different heterogeneous nucleation mechanisms, the free gas bubble model crevice model. Improvements include use a real-gas equation state, redefined effective mass function, exact difference forcing scheme. As result, much larger density...
Abstract High nighttime urban air temperatures increase health risks and economic vulnerability of people globally. While recent studies have highlighted heat mitigation effects vegetation, the magnitude variability vegetation-derived cooling differs greatly among cities. We hypothesize that is driven by vegetation density whose effect regulated aridity through increasing transpiration. test this hypothesis deploying microclimate sensors across eight United States cities investigating...
We derived two new expressions for the intrinsic permeability ( k ) of fractal porous media. The first approach, probabilistic capillary connectivity (PCC) model, is based on evaluating expected value cross‐sectional area pores connected along various flow paths in direction which sought. other model a modified version Marshall's approach (MPA) applied to random cross matching present parallel slices through medium. Menger sponge three‐dimensional mass that represents complicated pore space...