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Study on Properties of Caisson Breakwater as OWC under Irregular Waves

Author: YangGuoHua
Tutor: ShiHongDa
School: Ocean University of China
Course: Port, Coastal and Offshore Engineering
Keywords: Caisson breakwater Shore type wave power device Catch can Conversion efficiency
CLC: TV139.2
Type: Master's thesis
Year: 2010
Downloads: 68
Quote: 1
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Abstract


Caisson breakwater doubles as a shore -type wave power device is a new kind of work in Hong Kong buildings , it is a collection of the common characteristics of the breakwater and shore oscillating water column wave power device designed by . In addition to its energy wave wave dissipation Minato mooring conditions , but also the incident wave energy absorption is converted to electricity . Caisson compartment as the the OWC (Oscillationg Water Column) gas chamber , not only saves the caisson breakwater project cost , and to solve the problem of high shore oscillating water column wave power device construction costs , can be described as killing two birds with one stone . This article is on the basis of the preliminary study , the effect of energy catching device by physical model tests of the effect of irregular waves further research . This article is mainly on the basis of the physical model , studied the effects of the the caisson gas chamber catch can . The model test catch can effect test the wave pressure test the gas chamber . Wave pressure formula suitable for this device openings slight wave theory is derived , and wave pressure test data with the calculated results comparing the good agreement between the two , the the table the Mingbo pressure formula applies theoretical calculation of the device . Caught in caissons gas chamber can effect model test paper the main caisson gas indoor wave height , pressure and gas pipelines of air velocity data were collected . The results of experimental data processing caisson gas indoor volatility , the amplitude of the pressure of the gas chamber , and gas pipelines , air flow rate linkage , gas chamber capture the effect of energy by the incident wave elements , the water level of the gas chamber , the front wall draft and load factors . To obtain a good catch energy effect , the device is more suitable for large wave height , the long period of the incident wave conditions , the same time , the device should be in the working state of the lower front wall of the draft depth . Based on the test data to calculate the the caisson breakwater wave power generation device doubles as a shore -style conversion efficiency . The results show that when the incident wave cycle is longer , lower device Draught device time high conversion efficiency . This is consistent with previous research . This paper is based on a physical model tests , draw the device work in irregular waves under the law , put forward reasonable suggestions about the the device catch can effect , laid the foundation for further study of this device .

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CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Hydraulics > Wave hydraulics
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