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Full-Text Articles in Engineering
Measurements Of Three-Dimensional Velocity Fields Under Breaking Waves, Matthew Auch
Measurements Of Three-Dimensional Velocity Fields Under Breaking Waves, Matthew Auch
The Journal of Undergraduate Research
The three-dimensional (3D) velocity fields under breaking waves were measured using a Volumetric Three-Component Velocimetry (V3V) system. The V3V instrumentation determines the 3D positions and velocities of seed particles within a 3D measurement volume by using a synchronized laser-camera system and image processing algorithms. Measured velocity fields showed 3D vortex structures descending to the bottom and quickly dissipating as breaking waves propagated onshore.
Measurements Of Turbulent Pressure Under Breaking Waves, Christopher Olsen
Measurements Of Turbulent Pressure Under Breaking Waves, Christopher Olsen
The Journal of Undergraduate Research
The experiments discussed in this paper describe the turbulent fluid pressures in breaking waves. Before actual data measurements could be made, the instruments used were put through various tests to determine their ability to capture accurate data. These tests were both static and dynamic in nature. Following the tests on the pressure measurement system, waves were produced such that they were breaking at the instrument panel. Wave height, subsurface pressure, and three components of velocity were measured at this point. Using MATLAB to produce plots, waves that produce strong turbulence were isolated and their respective pressures, as well as theoretical …
Erosion Function Apparatus, Ryan Larsen
Erosion Function Apparatus, Ryan Larsen
The Journal of Undergraduate Research
The Erosion Function Apparatus (EFA) test uses site-specific soil samples acquired via thin-walled tubes to generate the erosion rate and shear stress which is plotted to create an erosion plot. The information produced by the test can help an engineer accurately determine the depth of scour as a function of time for bridge design, and thereby determine the depth a foundation system should be constructed. During EFA testing, a data acquisition system records the velocity and amount of soil eroded. This data is used to calculate the Reynolds Number, friction factor, erosion rate, and shear stress. Once the data has …
Particle Motion On A Plane Slope Under Spilling Breaking Waves, Jennifer Nelson
Particle Motion On A Plane Slope Under Spilling Breaking Waves, Jennifer Nelson
The Journal of Undergraduate Research
The experiments discussed in this paper involve the motion of discrete solid particles on a plane slope under spilling breaking wave conditions. Particle Image Velocimetry was used to capture images of seeder particles in water so the motion of the fluid particles and solid particles could be traced. The images produced from the experiments have two phases. Since the behavior of the water and the sediment particles must be studied individually, the two phases of the image must be separated. A series of functions in MATLAB allows the two-phase image to be separated into two images—one containing only the sediment …