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Abaiee, M.M.,Ahmadi, A.,Ketabdari, M.J. Korean Society of Ocean Engineers 2015 Journal of advanced research in ocean engineering Vol.1 No.1
Floating structure such as tension leg platform, semi-submersible and spar are widely used in field of oil exploration and renewable energy system. All of these structures have the base cylinder support structure which have effective rule in overall dynamic of response. So the accurate and reliable modeling is needed for optimum design and understanding the physical background of these systems. The aim of this article is an analytical discussion on stochastic modeling of floating cylinder based support structure but an applicable one. Due to this a mathematical mass-damper-spring system of a floating cylinder of HAWAII WTG offshore wind as an applicable and innovative system is adopted to model a coupled degrees using random vibration in analytical way. A fully develop spectrum is adopted to solve the stochastic spectrum analytically by a proper approximation. Some acceptable assumption is adopted. The simplified but analytical and innovative hydrodynamic analysis of this study not only will help researcher to concentrate more physically on hydrodynamic analysis of floating structures but also can be useful for any quick, simplified and closed form analysis of a complicated problem in offshore engineering.
M. M. Tehranchi,S. M. Hamidi,B. Abaie 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.5
We present a highly precise method for measuring the atomic number density of metallic vapor with the aid of spectral Faraday rotation measurements. By using the Rb spectral Faraday rotations at different temperatures and magnetic fields, we achieve the atomic vapor density of Rb. Our results show good agreement between the measured and the calculated atomic number density of Rb vapor.