{"refrec":{"BRefID":381714,"RR":"<b>Reis, R.A.; Fortes, C.J.E.M.; Rodrigues, J.A.; Hu, Z.; Suzuki, T.</b> (2024). Experimental study on drag coefficient of flexible vegetation under non-breaking waves. <i>Ocean Eng. 296</i>: 117002. <a href=\"https://dx.doi.org/10.1016/j.oceaneng.2024.117002\" target=\"_blank\">https://dx.doi.org/10.1016/j.oceaneng.2024.117002</a>","BEntID":379455,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Ocean Eng. 296</i>: 117002. <a href=\"https://dx.doi.org/10.1016/j.oceaneng.2024.117002\" target=\"_blank\">https://dx.doi.org/10.1016/j.oceaneng.2024.117002</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Reis, R.A.; Fortes, C.J.E.M.; Rodrigues, J.A.; Hu, Z.; Suzuki, T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Reis, R.A. <i>et al.</i>","Englishabstract":"<span lang=\"EN-US\" dir=\"ltr\">Laboratory experiments of wave propagation over rigid and flexible vegetation fields, with the same configurations, were conducted to understand the effect of vegetation flexibility on the drag coefficient (C<sub>D</sub>). The direct method and the least squares method (LSM), based on force and flow measurements, are applied to calculate the C<sub>D</sub> in the experimental conditions. The formulations of both methods are extended to estimate the C<sub>D</sub> for flexible vegetation cases. A video analysis was performed to account for the swaying motion. Typically, wave dissipation is lower for flexible than for rigid vegetation of the same configuration, under the same flow condition. Therefore, a proportional effect in the corresponding C<sub>D</sub> results, obtained from common C<sub>D</sub> calibration to wave dissipation without considering vegetation motion, is usually observed. However, the present results show that although the wave dissipation was 34% lower for flexible relative to rigid vegetation, the respective C<sub>D</sub> values were close. C<sub>D</sub> estimations considering vegetation motion and inertia suggest that C<sub>D</sub> of flexible vegetation was up to 13% higher relative to rigid vegetation. Accounting for inertia reduced the C<sub>D</sub> for rigid vegetation up to 7%, while raised the C<sub>D</sub> for flexible vegetation up to 13%.</span>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Experimental study on drag coefficient of flexible vegetation under non-breaking waves","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-22 01:42:02.299298","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Drag coefficient; Flexible vegetation; Vegetation motion; Inertia; Wave dissipation","OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2025-09-18","DateCreate":"2024-02-15","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001181827300001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.oceaneng.2024.117002"},"refs":null,"anarec":{"AnaID":381714,"PubliDate":2024,"Pagination":"117002","XtraPublOfAnaID":null,"ISBN":null,"Volume":"296","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43588,"SerRR":"Ocean Engineering. 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