Numerical modeling of re-suspension and transport of fine sediments in coastal waters

Karadoğan, Erol
In this thesis, the theory of three dimensional numerical modeling of transport and re-suspension of fine sediments is studied and a computer program is develped for simulation of the three dimensional suspended sediment transport. The computer program solves the three dimensional advection-diffusion equation simultaneously with a computer program prepared earlier for the simulation of three dimensional current systems. This computer program computes the velocity vectors, eddy viscosities and water surface elavations which are used as inputs by the program of fine sediment transport. The model is applied to Bay of Izmir for different wind conditions.


Developing an HLA-based naval maneuvering simulation
Topcu, O; Oğuztüzün, Mehmet Halit S. (Wiley, 2005-12-01)
This paper discusses the main issues involved in developing a high level architecture (HLA)-based distributed simulation while presenting an application called Naval Surface Tactical Maneuvering Simulation System (NSTMSS), which is intended to serve as a testbed for HLA and distributed interactive simulation (DIS) research. NSTMSS provides a networked virtual environment (NVE) for naval surface actions in which new formations can be evaluated and tested and present ones can be practiced and analyzed. This p...
Applications of a 3-D numerical model to circulation in coastal waters
Balas, L; Ozhan, E (2001-06-01)
A three dimensional baroclinic numerical model which consists of hydrodynamic, transport and turbulence model components, has been applied to two test cases, including: the wind induced flow in a laboratory basin and tidal flow in a model rectangular harbor. The agreement between the physical and numerical model results is highly encouraging. Model has been implemented to Oludeniz Lagoon located at the Mediterranean coast of Turkey to simulate tidal and wind driven currents. M2 tide is the dominant tidal co...
Experimental and numerical analysis of a TLP floating offshore wind turbine
Oğuz, Elif; Day, Alexander H.; Incecik, Atilla; Amate Lopez, Juan; Sánchez, Gustavo; Gonzalez Almeria, Gonzalo (Elsevier BV, 2018-01-01)
This paper describes an experimental and numerical investigation of the Iberdrola TLP wind turbine concept, TLPWINID, in realistic wind and wave conditions. The TLP was coupled to the NREL 5 MW reference turbine and was designed to operate in a water depth of 70 m. The test campaign included free oscillation tests, tests in regular and irregular waves and simulated wind conditions.
Nonlinear time-varying dynamic analysis of a spiral bevel geared system
Yavuz, Siar Deniz; Sarıbay, Zihni Burcay; Ciğeroğlu, Ender (Springer Science and Business Media LLC, 2018-06-01)
In this paper, a nonlinear time-varying dynamic model of a drivetrain composed of a spiral bevel gear pair, shafts and bearings is developed. Gear shafts are modeled by utilizing Timoshenko beam finite elements, and the mesh model of a spiral bevel gear pair is used to couple them. The dynamic model includes the flexibilities of shaft bearings as well. Gear backlash and time variation of mesh stiffness are incorporated into the dynamic model. Clearance nonlinearity of bearings is assumed to be negligible, w...
A short cut numerical method for determination of periods of free oscillations for basins with irregular geometry and bathymetry
Yalçıner, Ahmet Cevdet (Elsevier BV, 2007-04-01)
A short cut numerical method for evaluation of the modes of free oscillations of the basins which have irregular geometry and bathymetry is presented in this paper. In the method, a single wave is inputted to the basin as an initial impulse. The respective agitation in the basin is computed by using the numerical method solving the nonlinear form of long wave equations. The time histories of water surface fluctuations at different locations due to propagation of the waves in relation to the initial impulse ...
Citation Formats
E. Karadoğan, “Numerical modeling of re-suspension and transport of fine sediments in coastal waters,” M.S. - Master of Science, Middle East Technical University, 2004.