Irregular wave interaction with an offshore OWC wave energy converter
| Autor: | Masoud Montazeri Namin, Said Mazaheri, Milad Zabihi, Ahmad Rezaee Mazyak |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Range (particle radiation) Environmental Engineering Slosh dynamics 020209 energy Oscillating Water Column Ocean Engineering Context (language use) 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Free surface 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Reflection (physics) Energy transformation Energy (signal processing) |
| Zdroj: | Ocean Engineering. 222:108619 |
| ISSN: | 0029-8018 |
| DOI: | 10.1016/j.oceaneng.2021.108619 |
| Popis: | Oscillating Water Column (OWC) with its mechanism based on converting hydrodynamic energy into pneumatic energy is one of the earliest wave energy converters studied by researchers. While the focus of the previous studies were mainly on hydrodynamic efficiency, this paper addresses free surface fluctuation inside the OWC chamber emphasizing on sloshing phenomenon through irregular wave impingement. As reflection response of an offshore OWC plays an important role in energy conversion chain, this paper also provides an insight of wave reflection by such devices. The experimental results show that decreasing damping effect boosts the sloshing energy stored inside the OWC chamber but the ratio of sloshing energy content to the total stored energy inside the chamber decreases; accentuating the importance of tuning short period waves with larger slot sizes. In the context of reflection response of an OWC, relative depth (kd) is the most important factor which can make a great difference in reflection coefficients even up to 100%. Spectral reflection analysis shows that regardless of incident wave height, slot size and draft value, there is a range of relative chamber length (l/L); 0.1 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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