Browsing NTNU Open by Author "Ghamari, Isar"
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Investigation of Parametric Resonance in Roll for Container Carrier Ships
Ghamari, Isar; Faltinsen, Odd Magnus; Greco, Marilena (Chapter; Peer reviewed, 2015)Parametric roll resonance is of concern for container and fishing vessels, especially in head-sea waves. Here this phenomenon is investigated with a numerical method based on potential-flow theory with viscous corrections ... -
Numerical and Experimental Study on the Parametric Roll Resonance for a Fishing Vessel with and without forward speed
Ghamari, Isar; Greco, Marilena; Faltinsen, Odd Magnus; Lugni, Claudio (Peer reviewed; Journal article, 2020)The parametric resonance in roll motion (known shortly as parametric roll) was studied for a fishing vessel in regular waves. This is an instability and resonance phenomenon that can lead the roll to reach very high ... -
Numerical and Experimental Study on the Ship Parametric Roll Resonance and the Effect of Anti- Roll Tank
Ghamari, Isar (Doctoral theses at NTNU;2019:21, Doctoral thesis, 2019)The parametric resonance in roll motion (known shortly as parametric rolling) was studied for a fishing vessel and container ship in regular waves. This is an instability and resonance phenomenon that can lead the roll to ... -
Numerical prediction of wave patterns due to motion of 3D bodies by Kelvin-Havelock sources
Ghassemi, Hassan; Ghamari, Isar; Ashrafi, Arash (Peer reviewed; Journal article, 2016)This paper discusses the numerical evaluation of the hydrodynamic characteristics of submerged and surface piercing moving bodies. Generally, two main classes of potential methods are used for hydrodynamic characteristic ... -
Parametric Resonance of a Fishing Vessel With and Without Anti-Roll Tank: An Experimental and Numerical Study
Ghamari, Isar; Greco, Marilena; Faltinsen, Odd Magnus; Lugni, Claudio (Chapter; Peer reviewed, 2017)Parametric resonance (PR) in roll is of concern for fishing vessels, especially in head-sea waves. Here the effect of passive anti-roll free-surface tank is investigated experimentally and numerically on realistic ...