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Yu H.,Ocean University of China | Wang L.,Ocean University of China | Kuang L.,Environmental Resource Management Inc. | Sun Y.,Ocean University of China | And 2 more authors.
Journal of Ocean University of China | Year: 2016

Based on the finite-volume coastal ocean model (FVCOM), a three-dimensional numerical model FVCOM was built to simulate the ocean dynamics in pre-dam and post-dam conditions in Bachimen (BCM). The domain decomposition method, which is effective in describing the conservation of volume and non-conservation of mechanical energy in the utilization of tidal energy, was employed to estimate the theoretical tidal energy resources and developable energy resources, and to analyze the hydrodynamic effect of the tidal power station. This innovative approach has the advantage of linking physical oceanography with engineering problems. The results indicate that the theoretical annual tidal energy resources is about 2×108 kWh under the influence of tidal power station; Optimized power installation is confirmed according to power generation curve from numerical analysis; the developable resources is about 38.2% of theoretical tidal energy resources with the employment of one-way electricity generation. The electricity generation time and power are 3479 hours and 2.55×104 KW, respectively. The power station has no effect on the tide pattern which is semi-diurnal tide in both two conditions, but the amplitudes of main constituents apparently decrease in the area near the dam, with the M2 decreasing the most, about 62.92 cm. The tidal prism shrinks to 2.28×107 m3, but can still meet the flow requirement for tidal power generation. The existence of station increases the flow rate along the waterway and enhances the residual current. There are two opposite vortexes formed on the east side beside the dam of the station, which leads to pollutants gathering. © 2016, Science Press, Ocean University of China and Springer-Verlag Berlin Heidelberg. Source


Wu H.,National Ocean Technology Center | Yu H.,Ocean University of China | Kuang L.,Environmental Resource Management Inc. | Ding J.,National Ocean Technology Center | Wang L.,Ocean University of China
OCEANS 2014 - TAIPEI | Year: 2014

FVCOM ocean model is applied to simulate the tidal wave system in the Qiongzhou Strait, and the error between investigation and simulation is acceptable. Based on that result, we assess the tidal energy of Qiongzhou Straits by the method of FLUX, and discuss the temporal and spatial distributions of tidal current energy resource in this area. An conclusion can be extracted like this: there is a higher power density of energy in the central area of this strait, relatively, lower on both sides; characteristic symbols of power density of energy such as most possibility speed, maximal density of. © 2014 IEEE. Source


Yu H.,Ocean University of China | Wang Z.,Ocean University of China | Kuang L.,Environmental Resource Management Inc. | Wang L.,Ocean University of China | And 4 more authors.
Acta Oceanologica Sinica | Year: 2015

The Shacheng Bay (SCB) is one of the most complex coastal bays in southeast China and due to the fact of complicated geometry and dynamic coastal processes, it is considered as a challenging area for the numerical simulation of its hydrodynamic characteristics. The most advanced finite volume ocean model, finite-volume coastal ocean model (FVCOM), has adopted to simulate this hydrodynamic system, where tidal currents, tidal residual current and dye diffusion processes were studied and analyzed quantitatively. The validation of this numerical model matches well with various observation data, including elevation and current data. The misfit of a tidal elevation has a relative standard error of 3.66% and 4.67% for M2 and S2 tide components. The current validation shows a good match with an average error of 10 cm/s and 8° in the speed major axis and its direction respectively between the simulation and the measurement. This proves the robustness and reliability of this model. It is also found that the cape effect is significant and important in this system. The dye diffusion simulations show a 53 d flushing period for the whole inner bay waterbody. The results are of its first kind for understanding the hydrodynamic system in the SCB and they can provide helpful and trustful scientific information for others. © 2015, The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg. Source

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