A5056996587- Aeolian processes and effects
- Coastal and Marine Dynamics
- Earthquake and Tsunami Effects
- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Wave and Wind Energy Systems
- Marine and environmental studies
- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Fluid Dynamics Simulations and Interactions
- Marine and coastal plant biology
- Arctic and Antarctic ice dynamics
- Tropical and Extratropical Cyclones Research
- Botany, Ecology, and Taxonomy Studies
- Drilling and Well Engineering
- Biocrusts and Microbial Ecology
- Solar-Powered Water Purification Methods
- Fluid Dynamics and Turbulent Flows
- earthquake and tectonic studies
- Geotechnical Engineering and Underground Structures
- Landslides and related hazards
- Turfgrass Adaptation and Management
Oregon State University
2005-2024
Woods Hole Oceanographic Institution
2003
Vegetation at the aquatic-terrestrial interface can alter landscape features through its growth and interactions with sediment fluids. Even similar species may impart different effects due to variation in their feedbacks environment. Consequently, replacement of one engineering by another cause significant change physical Here we investigate species-specific ecological mechanisms influencing geomorphology U.S. Pacific Northwest coastal dunes. Over last century, this system changed from open,...
A series of detailed measurements were made unidirectional turbulent open‐channel flow over fixed, artificial, sinuous‐crested three‐dimensional (3‐D) dune shapes. The response the mean free surface was two‐dimensional (2‐D). Mean streamwise velocities largest node sinuous crest line rather than maxima or minima line. Friction coefficients 3‐D dunes 50% higher on average in comparison to those their 2‐D counterparts when subjected flows similar depths and discharges. Despite larger friction...
Dunes formed in response to fluid flow exert a total boundary stress on the that is made up of form drag and skin friction, latter which generally considered important for predicting sediment transport dune evolution. Previous research has used various methods estimate its subcomponents, with recent work suggesting application spatial average equations motion. A complete, three‐dimensional (3‐D) this analysis derived applied measurements turbulent open‐channel over 3‐D dunes. Spatial...
The details of a large-scale laboratory experiment to study the turbulence generated by waves breaking on fixed barred beach are presented. data set includes comprehensive measurements free surface displacement and fluid velocity for one random regular wave case. Observations time-averaged turbulent kinetic energy per unit mass, , show that was greatest at bar crest did not fully dissipate prior reaching bed. This indicates that, even in sense, may be important near-bed processes. Onshore...
A large-eddy simulation study has been undertaken to investigate the turbulent structure of open-channel flow over three-dimensional (3D) dunes. The governing equations have discretized using finite volume method, with partial cell treatment being implemented in a Cartesian grid form deal 3D dune topography. simulated free surface elevations, mean velocities and Reynolds shear stress distributions compared experimental measurements published literature. Relatively close agreement obtained...
Through the Natural Hazards Engineering Research Infrastructure program (NHERI) established by National Science Foundation in United States, a suite of experimental facilities has been made available to research community advance resilience civil infrastructure and communities coastal storm earthquake hazards. An facility called NHERI Experimental Facility hosted at O.H. Hinsdale Wave Laboratory Oregon State University (HWRL EF) was created through this that serves as state-of-the-art...
Abstract Wave runup is an important process due to its effects on sediment transport and role in coastal hazards. Despite decades of research this topic, much uncertainty still exists the estimation prediction runup. A recent numerical study has shown that there appreciable variability among wave groups a dissipative beach sequencing bichromatic waves resulting merging bores. The current work further explores, highly controlled laboratory setting, sequencing. It found considerable groups,...
The quality of most coastal or ocean laboratory experiment depends on the accuracy, uniformity and stability generated waves. Generation waves in seems simple, but it should consider spatio-temporal variability wave profile. As they propagate, interact with boundaries, i.e. changes water depth, lateral walls, test specimens, instrument supporting structures, passive absorbers, etc., as well varying hydrodynamic conditions (wave-induced currents, wave-wave interactions, nonlinear energy...