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In complex marine environments, double-peaked spectra are commonly observed. These double-peaked spectra are generally formed by the superposition of high-frequency wind waves (short-period) and low-frequency swell waves (long-period), with an energy distribution showing a double-peak structure, as shown in Fig. 3.1. It is evident that two spectral peaks exist: a lower frequency component at f = 0.14 and a higher frequency component at f = 0.33. Thus, exploring how to absorb long-period waves is worthwhile. In this chapter, we present a method for absorbing long-period waves using the Helmholtz resonance mechanism.

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Helmholtz Oscillating Water Column: Concept, Hydrodynamic Analysis, and Design Criteria

  • 章节

  • 发表日期：

    2025年

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  • Xuanlie Zhao

摘要

In complex marine environments, double-peaked spectra are commonly observed. These double-peaked spectra are generally formed by the superposition of high-frequency wind waves (short-period) and low-frequency swell waves (long-period), with an energy distribution showing a double-peak structure, as shown in Fig. 3.1. It is evident that two spectral peaks exist: a lower frequency component at f = 0.14 and a higher frequency component at f = 0.33. Thus, exploring how to absorb long-period waves is worthwhile. In this chapter, we present a method for absorbing long-period waves using the Helmholtz resonance mechanism.