Search Results - "RICHMOND, Marshall C"

Intercomparison of 3D pore-scale flow and solute transport simulation methods by Yang, Xiaofan, Mehmani, Yashar, Perkins, William A., Pasquali, Andrea, Schönherr, Martin, Kim, Kyungjoo, Perego, Mauro, Parks, Michael L., Trask, Nathaniel, Balhoff, Matthew T., Richmond, Marshall C., Geier, Martin, Krafczyk, Manfred, Luo, Li-Shi, Tartakovsky, Alexandre M., Scheibe, Timothy D.

“…•Reports a large 3D benchmark study of pore-scale modeling methods.•Codes and methods varied widely in complexity and computational demand.•Both macroscopic…”
Get full text

A novel construct for scaling groundwater–river interactions based on machine-guided hydromorphic classification by Hou, Zhangshuan, Ren, Huiying, Murray, Christopher J, Song, Xuehang, Fang, Yilin, Arntzen, Evan V, Chen, Xingyuan, Stegen, James C, Huang, Maoyi, Gomez-Velez, Jesus D, Duan, Zhuoran, Perkins, William A, Richmond, Marshall C, Scheibe, Timothy D

“…Hydrologic exchange between river channels and adjacent subsurface environments is a key process that influences water quality and ecosystem function in river…”
Get full text

Six-Degree-of-Freedom Sensor Fish Design and Instrumentation by Deng, Zhiqun, Carlson, Thomas J, P, Joanne, Richmond, Marshall C

“…Fish passing through dams may be injured or killed despite advances in turbinedesign, project operations and other fish bypass systems. The…”
Get full text

Measurements of Turbulence at Two Tidal Energy Sites in Puget Sound, WA by Thomson, J., Polagye, B., Durgesh, V., Richmond, M. C.

“…Field measurements of turbulence are presented from two sites in Puget Sound, WA, that are proposed for electrical power generation using tidal current…”
Get full text

Injury and Mortality of Juvenile Salmon Entrained in a Submerged Jet Entering Still Water by Deng, Zhiqun, Mueller, Robert P., Richmond, Marshall C., Johnson, Gary E.

“…Development of more eco‐friendly hydroelectric facilities requires better understanding of the biological response of juvenile fish when they migrate through…”
Get full text

Dam Operations and Subsurface Hydrogeology Control Dynamics of Hydrologic Exchange Flows in a Regulated River Reach by Shuai, Pin, Chen, Xingyuan, Song, Xuehang, Hammond, Glenn E., Zachara, John, Royer, Patrick, Ren, Huiying, Perkins, William A., Richmond, Marshall C., Huang, Maoyi

“…Hydrologic exchange flows (HEFs) across the river‐aquifer interface have important implications for biogeochemical processes and contaminant plume migration in…”
Get full text

Numerical simulation of circular cylinders in free-fall by Romero-Gomez, Pedro, Richmond, Marshall C.

“…In this work, we combined the use of (i) overset meshes, (ii) a 6degree-of-freedom (6-DOF) motion solver, and (iii) an eddy-resolving flow simulation approach…”
Get full text

Simulating blade-strike on fish passing through marine hydrokinetic turbines by Romero-Gomez, Pedro, Richmond, Marshall C.

“…The occurrence, frequency, and intensity of blade-strike of fish on an axial-flow marine hydrokinetic turbine was simulated using two modeling approaches: a…”
Get full text

Movement and collision of Lagrangian particles in hydro-turbine intakes: a case study by Romero-Gomez, Pedro, Richmond, Marshall C.

“…Studies of the stress/survival of migratory fish during downstream passage through operating hydro-turbines are normally conducted to determine the…”
Get full text

Pore-scale and multiscale numerical simulation of flow and transport in a laboratory-scale column by Scheibe, Timothy D., Perkins, William A., Richmond, Marshall C., McKinley, Matthew I., Romero-Gomez, Pedro D. J., Oostrom, Mart, Wietsma, Thomas W., Serkowski, John A., Zachara, John M.

“…Pore‐scale models are useful for studying relationships between fundamental processes and phenomena at larger (i.e., Darcy) scales. However, the size of…”
Get full text

Parallel Distributed Hydrology Soil Vegetation Model (DHSVM) using global arrays by Perkins, William A., Duan, Zhuoran, Sun, Ning, Wigmosta, Mark S., Richmond, Marshall C., Chen, Xiaodong, Leung, L. Ruby

“…The Distributed Hydrology Soil Vegetation Model (DHSVM) code was parallelized for distributed memory computers using the Global Arrays (GA) programming model…”
Get full text

Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations by Hou, Zhangshuan, Scheibe, Timothy D., Murray, Christopher J., Perkins, William A., Arntzen, Evan V., Ren, Huiying, Mackley, Robert D., Richmond, Marshall C.

“…In the Hanford Reach of the Columbia River, a thin layer of recent alluvium overlies the sedimentary formations that comprise the unconfined groundwater…”
Get full text

Methane Ebullition in Temperate Hydropower Reservoirs and Implications for US Policy on Greenhouse Gas Emissions by Miller, Benjamin L., Arntzen, Evan V., Goldman, Amy E., Richmond, Marshall C.

“…The United States is home to 2198 dams actively used for hydropower production. With the December 2015 consensus adoption of the United Nations Framework…”
Get full text

Empirical investigation into the applicability of surrogacy for juvenile salmonids (Oncorrhynchus spp.) exposed to hydropower induced rapid decompression by Beirão, Bernardo, Pflugrath, Brett, Harnish, Ryan A., Harding, Samuel F., Richmond, Marshall C., Colotelo, Alison H.

“…•Three salmonids had similar barotrauma susceptibility at moderate decommission.•Rainbow trout were less susceptible to barotrauma at extreme…”
Get full text

Direct numerical simulation of pore-scale flow in a bead pack: Comparison with magnetic resonance imaging observations by Yang, Xiaofan, Scheibe, Timothy D., Richmond, Marshall C., Perkins, William A., Vogt, Sarah J., Codd, Sarah L., Seymour, Joseph D., McKinley, Matthew I.

“…► We simulate pore-scale flow in a 3D cm-scale bead pack at 20-micron resolution. ► We measure pore-scale flow at 40-micron resolution using MRI. ► We compare…”
Get full text

Flow and axial dispersion in a sinusoidal-walled tube: Effects of inertial and unsteady flows by Richmond, Marshall C., Perkins, William A., Scheibe, Timothy D., Lambert, Adam, Wood, Brian D.

“…•We simulate Navier–Stokes flow in a sinusoidal-walled tube.•We compare dispersion from volume averaging with direct numerical simulation.•We evaluate effects…”
Get full text

A comparison of metrics to evaluate the effects of hydro-facility passage stressors on fish by Colotelo, Alison H., Goldman, Amy E., Wagner, Katie A., Brown, Richard S., Deng, Z. Daniel, Richmond, Marshall C.

“…Hydropower is the most common form of renewable energy, and countries worldwide are considering expanding hydropower to new areas. One of the challenges of…”
Get full text

Fish individual-based numerical simulator (FINS): a particle-based model of juvenile salmonid movement and dissolved gas exposure history in the Columbia River basin by Scheibe, Timothy D, Richmond, Marshall C

“…This paper describes a numerical model of juvenile salmonid movements in the Columbia and Snake Rivers. The model, called the Fish Individual-based Numerical…”
Get full text

Spatial Mapping of Riverbed Grain-Size Distribution Using Machine Learning by Ren, Huiying, Hou, Zhangshuan, Duan, Zhuoran, Song, Xuehang, Perkins, William A., Richmond, Marshall C., Arntzen, Evan V., Scheibe, Timothy D.

“…Recent alluvial sediments in riverbeds play a significant role in controlling hydrologic exchange flows (HEFs) in river systems. The alluvial layer is usually…”
Get full text

Flow Partitioning in Fully Saturated Soil Aggregates by Yang, Xiaofan, Richmond, Marshall C., Scheibe, Timothy D., Perkins, William A., Resat, Haluk

“…Microbes play an important role in facilitating organic matter decomposition in soils, which is a major component of the global carbon cycle. Microbial…”
Get full text