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Area Marine energy - Wave, tidal and other water current converters / Wave characterics

IEV ref 417-06-07

en
mean zero crossing period, <of a water wave>
average duration between downcrossings of the mean water level during a given sea state

Note 1 to entry: The spectral estimate of the mean zero crossing period, T02, is calculated as

T 02 = m 0 m 2 MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm 0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9ad baGaciGabaqaamaaceGaaiGacaabaaGcbaqcaaKaamivaOWaaSbaaK qaafaacaqGWaGaaeOmaaqabaqcaaKaeyypa0JcdaGcaaqcaauaaOWa aSaaaKaaafaacaWGTbGcdaWgaaqcbauaaiaabcdaaeqaaaqcaauaai aad2gakmaaBaaajeaqbaGaaeOmaaqabaaaaaqabaaaaa@3C9B@ , where m0 and m2 are the zero and second spectral moments.


[SOURCE: IEC TS 62600-1:2020, 3.26]


fr
période moyenne au niveau zéro, <d’une vague> f
durée moyenne entre les passages par le bas du niveau moyen de l’eau pendant un état de mer donné

Note 1 à l’article: L’estimation spectrale de la période moyenne au niveau zéro, T02, est calculée comme suit

T 02 = m 0 m 2 MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm 0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9ad baGaciGabaqaamaaceGaaiGacaabaaGcbaqcaaKaamivaOWaaSbaaK qaafaacaqGWaGaaeOmaaqabaqcaaKaeyypa0JcdaGcaaqcaauaaOWa aSaaaKaaafaacaWGTbGcdaWgaaqcbauaaiaabcdaaeqaaaqcaauaai aad2gakmaaBaaajeaqbaGaaeOmaaqabaaaaaqabaaaaa@3C9B@ , où m0 et m2 sont les moments spectraux d’ordre zéro et deux.


[SOURCE: IEC TS 62600-1:2020, 3.26]


Publication date: 2022-02
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