Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 33 for “"bottom friction"”.
-
Bottom friction under waves in the presence of a weak current : it's relationship to coastal sediment transport.
Thesis. 1977. Sc.D.--Massachusetts Institute of Technology. Dept. of Civil Engineering.
-
Use of Lidar Data to Investigate the Influence of Bottom Friction Coefficients for Storm Surge Modeling of Hurricane Michael in the Florida Panhandle
… results indicate that realistic and descriptive bottom friction parameterization is an influential component of simulated storm surge behavior in the floodplain and should be investigated further. (This material is based upon work supported by the U.S. Department of Homeland Security under Grant …
-
A neural network computer model of the hydrodynamical flow in the River Medway estuary at its confluence with the River Thames
… model for both depth and velocity with zero bottom friction was designed to use as a precursor to a full friction model. The model was extensively trained and tested over a 600 Km length, using generated data, to obtain information on the optimum structure of the neural network and various …
-
Cooling and internal waves on the Continental Shelf
… are found for a wedge-shaped bathymetry with bottom friction. Bottom friction is capable of entirely dissipating the waves before they reach the coast, and waves traveling obliquely offshore are reflected back to the coast from a caustic. The internal wave climate near two moorings of the …
-
One-dimensional wave spectrum analysis of wind waves off Cape Town
… variances with depth have been examined. The bottom friction factor for this coast was estimated. The mean value of the bottom friction is 0.22. This is higher than found by other workers.
-
Stability of a coastal upwelling front over topography
… a surface front near a coastal boundary and bottom topography which is an arbitrary function of the cross-shelf coordinate. By combining the various conservation statements for the global properties of the system, a general stability theorem is established which allows the a priori …
-
Linear and nonlinear Rossby waves in basins both with and without a thin meridional barrier
… over a meridional strip near the eastern side. Bottom friction is present to allow the solutions to reach equilibrium. The linear solution for the basin containing the barrier is determined analytically and the nonlinear solutions for both basins are found numerically. In the linear solution …
-
SIMULATION OF POLLUTANT TRANSPORT RESPONSES TO LOADING AND WEATHER VARIATIONS IN LAKE ST. CLAIR AND THE CONNECTING CHANNELS.
… finite element model which includes wind stress, bottom friction, Coriolis force, inflow, outflow and the bottom topography of the lake was developed and verified with field data. The overall root mean square differences between predicted and measured current magnitudes and directions were 1.3 …
-
Linear and nonlinear Rossby waves in basins both with and without a thin meridional barrier
… over a meridional strip near the eastern side. Bottom friction is present to allow the solutions to reach equilibrium. The linear solution for the basin containing the barrier is determined analytically and the nonlinear solutions for both basins are found numerically. In the linear solution …
-
The Dynamics of Wave-Driven Reef Pass Jets and Coral Population Recovery on an Island
… across a range of planetary rotation and bottom friction conditions. For higher latitude, lower friction cases, adjacent jets interacted due to the deflection of the jet by planetary rotation and weak attenuation by friction - a previously undescribed phenomenon. The physics of reef pass …
-
Development and application of a field instrumentation system for the investigation of surf zone hydrodynamics
… parameterization of the momentum flux forces and bottom friction forces within the surf zone. There was an observed shoreward loss in momentum flux across the width of the surf zone, from about -150,000 dynes/cm outside the breakers to near zero close to the shoreward extent of the surf zone. The …
-
Channel Processes and form Near the Tidal Limit
… and advance upstream until it dissipates due to bottom friction and downstream flow. It follows that near the upstream extent of tidal influence along a river channel, freshwater currents transition from fully unidirectional to fully bi-directional. The goal of this study is to investigate …
-
Multiple equilibria and low-frequency variability of wind-driven ocean models
… curl input of vorticity is balanced primarily by bottom friction are studied. The bifurcations away from a unique and stable steady state are mapped as a function of two nondimensional parameters, (δI,δS), which can be thought of as measuring respectively the relative importance of the nonlinear …
-
Generation and maintenance of recirculations by Gulf Stream instabilities
… energy states for a wide range of interfacial friction coefficients. The high energy state is characterized by well-developed recirculations and displays strong variability associated with either large recirculating gyres and a weak eddy field or small recirculations and a strong eddy field. …
-
The Effects of Basin Slope and Boundary Friction on the Character and Plunge Location of Hyperpycnal Flows Entering a Laterally Unbounded Basin
… modeling software. Three parameters viz. the bottom slope of the receiving basin, the bottom friction and the density difference between inflow and ambient liquid were varied to test their influence on the plume spread rate.
-
The influence of a steady baroclinic deep ocean on the shelf
… steady, boundary forced models which incorporate bottom friction. One set of models, for a vertically well mixed shelf, includes the horizontal advection of density. The second set of models comprises a three-layer model without and a two-layer model with interfacial friction. It is found that …
-
Continuously Stratified Flow Dynamics Over a Hollow
… Measurements showed an acceleration of the near-bottom flow as it moved toward the deepest part of the hollows, in contrast to the deceleration expected from two-dimensional Bernoulli-type dynamics. The acceleration was attributed to lateral water intrusions that were most apparent during floods. …
-
A study on green water problem with dam break model and the BIV technique
… is smaller than 3t ∗ 1 5 ≈ 0.63. To include the bottom friction effects and the bed slope effects for green water problem, we proposed a simplified piecewise solution (PS). Numerically, the two fluid model with the Volume of Fluid (VOF) method implemented in the interFoam solver is used to …
-
Rotating convection driven by differential bottom heating and its application
… circulation. Heat flux was fixed at one bottom end of the tank using an electrical heater. Temperature was fixed at the other end using a cooling plate. All other boundaries were insulated. The cross sections of temperature field were made at several locations. In equilibrium, the heat …
-
An Implicit Finite-Volume Depth-Integrated Model For Coastal Hydrodynamics And Multiple-Sized Sediment Transport
… advection, wave-enhanced turbulent mixing and bottom friction; wave-induced volume flux; wind, atmospheric pressure, wave, river, and tidal forcing; and Coriolis-Stokes force. The sediment transport model simulates nonequilibrium total-load transport, and includes flow and sediment transport …
Page 1 of 2