wave energy;
oscillating water column;
spring-like effect;
air compressibility;
hydrodynamic performance;
AIR TURBINES;
SCALE;
CONVERSION;
PRESSURE;
FLOW;
D O I:
10.3390/jmse12081327
中图分类号:
U6 [水路运输];
P75 [海洋工程];
学科分类号:
0814 ;
081505 ;
0824 ;
082401 ;
摘要:
The oscillating water column (OWC) wave energy converter has demonstrated significant potential for converting ocean wave energy. The spring-like effect of air compressibility can significantly affect the hydrodynamic behavior of the device, but it has rarely been investigated through experimental studies. In this study, an experimental test on a model-scaled OWC device was carried out in a wave flume using a series of regular and irregular waves. The spring-like effect was taken into account by the combination of the air chamber with an additional air reservoir of appropriate volume, where the total volume was scaled according to the square of the Froude scale. The hydrodynamic performance was compared with the results obtained without considering the spring-like effect. A phase difference between the air pressure and airflow rate was observed when employing the additional air reservoir. The amplitudes of free surface elevation and airflow rate increased, while the air pressure was reduced when the spring-like effect was considered. The results demonstrate that failure to consider the spring-like effect can lead to overestimation of the hydrodynamic efficiencies, and the errors were mainly affected by the incident wave frequency.
机构:
Univ Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South AfricaUniv Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South Africa
Fairhurst, Jason
;
Van Niekerk, Johannes L.
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h-index: 0
机构:
Univ Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South AfricaUniv Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South Africa
机构:
Univ Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Falcao, Antonio F. O.
;
Sarmento, Antonio J. N. A.
论文数: 0引用数: 0
h-index: 0
机构:
WavEC Offshore Renewables, Rua Dom Jeronimo Osorio 11, P-1400119 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Sarmento, Antonio J. N. A.
;
Gato, Luis M. C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Gato, Luis M. C.
;
Brito-Melo, Ana
论文数: 0引用数: 0
h-index: 0
机构:
WavEC Offshore Renewables, Rua Dom Jeronimo Osorio 11, P-1400119 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
机构:
Univ Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South AfricaUniv Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South Africa
Fairhurst, Jason
;
Van Niekerk, Johannes L.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South AfricaUniv Stellenbosch, Ctr Renewable & Sustainable Energy Studies, Private Bag X1, ZA-7692 Stellenbosch, South Africa
机构:
Univ Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Falcao, Antonio F. O.
;
Sarmento, Antonio J. N. A.
论文数: 0引用数: 0
h-index: 0
机构:
WavEC Offshore Renewables, Rua Dom Jeronimo Osorio 11, P-1400119 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Sarmento, Antonio J. N. A.
;
Gato, Luis M. C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Gato, Luis M. C.
;
Brito-Melo, Ana
论文数: 0引用数: 0
h-index: 0
机构:
WavEC Offshore Renewables, Rua Dom Jeronimo Osorio 11, P-1400119 Lisbon, PortugalUniv Lisbon, Inst Super Tecn, IDMEC LAETA, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal