Journal of Marine Science and Technology最新文献_第6页

Linear and nonlinear analyses of the porpoising dynamics of high-speed planing craft using full-scale trial data 基于全尺寸试验数据的高速刨床船的动态线性和非线性分析

IF 2.6 4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-29 DOI: 10.1007/s00773-023-00972-3

Satoru Hamada, Atsuo Maki

引用次数: 0

Analysis of submerged vehicle wakes in stratified ocean 分层海洋水下航行器尾迹分析

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-13 DOI: 10.1007/s00773-023-00961-6

Dawei Li, Kaibo Yu, Xiao Wang, Hang Sun

引用次数: 0

RAO-based translation process for estimating extreme value distribution of nonlinear ship response in irregular waves 不规则波浪中船舶非线性响应极值分布估计的基于rao的平移方法

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-11 DOI: 10.1007/s00773-023-00973-2

Sadaoki Matsui, Masayoshi Oka

{"title":"RAO-based translation process for estimating extreme value distribution of nonlinear ship response in irregular waves","authors":"Sadaoki Matsui, Masayoshi Oka","doi":"10.1007/s00773-023-00973-2","DOIUrl":"https://doi.org/10.1007/s00773-023-00973-2","url":null,"abstract":"Abstract The authors propose a new method named the RAO-based Translation Process (RTP) method for simply estimating the extreme value distribution of the nonlinear ship response in irregular waves based on the nonlinear response in regular waves. The proposed method combines the existing idea of the Nonlinear Correction (NLC) method, which is based on wave height-dependent RAO, with the theory of the translation process, and thus has both simplicity and a clear theoretical background. Furthermore, it is positioned as an extension of the Equivalent Design Wave (EDW) method used in conventional ship structural design. The validity of the proposed method is confirmed through a numerical study on the extreme value distribution of hull-girder sectional forces considering body nonlinear effects. The proposed method can be used for various purposes, and in particular, it can reduce the computational demand for strength evaluation by Direct Load and Structure Analysis (DLSA), which is a computationally extensive analysis method. Therefore, the proposed method is expected to make a significant contribution to structural design.","PeriodicalId":16334,"journal":{"name":"Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling and high-gain adaptive control of chaotic yawing of ship under wave disturbance 波浪扰动下船舶混沌偏航建模及高增益自适应控制

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-06 DOI: 10.1007/s00773-023-00970-5

Xu Han, Xianku Zhang

引用次数: 0

Reliability assessment of the ocean thermal energy conversion systems through Monte Carlo simulation considering outside temperature variation 考虑外部温度变化的海洋热能转换系统可靠性蒙特卡罗模拟评估

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-06 DOI: 10.1007/s00773-023-00967-0

Amir Ghaedi, Reza Sedaghati, Mehrdad Mahmoudian, Eduardo M. G. Rodrigues, Radu Godina

{"title":"Reliability assessment of the ocean thermal energy conversion systems through Monte Carlo simulation considering outside temperature variation","authors":"Amir Ghaedi, Reza Sedaghati, Mehrdad Mahmoudian, Eduardo M. G. Rodrigues, Radu Godina","doi":"10.1007/s00773-023-00967-0","DOIUrl":"https://doi.org/10.1007/s00773-023-00967-0","url":null,"abstract":"Abstract The ocean thermal energy conversion (OTEC) systems, as renewable energy-based power plants, have the potential to play a significant role in meeting future electricity demands due to the vast expanse of the world's oceans. These systems employ the temperature difference between surface ocean waters and deep ocean waters to drive a thermodynamic cycle and produce electricity. The temperature of deep ocean waters, approximately 1000 m below the surface, is approximately 4 °C, while surface ocean temperatures typically range between 20 and 30 °C. The generated power of OTEC systems is dependent on these temperature differences and may vary with changes in surface ocean temperatures. In this study, the main focus is to find the impact of temperature variation on the failure rates of OTEC system components and the generated power output of these plants. The findings indicate that as the demand for the power system increases, its reliability decreases. In order to improve the reliability of the power system, the integration of a new generation unit, such as the close cycle OTEC power plant under investigation, could be necessary. The findings also indicate the importance of considering temperature variation in the evaluation of the reliability of such types of power plants based on renewable energy.","PeriodicalId":16334,"journal":{"name":"Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on berthing and unberthing of a single-shaft ship with a bow thruster 单轴船首推力器靠泊与离泊研究

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-06 DOI: 10.1007/s00773-023-00968-z

R. Okuda, H. Yasukawa, N. Hirata, A. Matsuda

引用次数: 0

Experimental study on the dynamical response of elastic trimaran model under slamming load 冲击载荷作用下弹性三体船模型动力响应试验研究

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-04 DOI: 10.1007/s00773-023-00969-y

Jin Pan, Wen Zhe Zhang, Zhi Mian Sun, Xue Qu, Ming Cai Xu

引用次数: 0

The accuracy of the mean value engine model affected little by the accuracy of compressor mass flow rate model for a marine diesel engine 船用柴油机压气机质量流量模型的精度对发动机均值模型的精度影响不大

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-11-03 DOI: 10.1007/s00773-023-00971-4

Yuanyuan Tang, Yu Xia, Jundong Zhang, Baozhu Jia, Ruizheng Jiang

引用次数: 0

Influence of propeller fouling on propulsion performance of an actual ship: a long-term analysis focusing on the power for keeping propeller’s rotation of a controllable pitch propeller 螺旋桨污垢对实际船舶推进性能的影响——以可控螺距螺旋桨保持螺旋桨转动的动力为重点的长期分析

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-10-28 DOI: 10.1007/s00773-023-00964-3

Hiroaki Torii, Hiroyasu Kifune

引用次数: 0

A study on the implementation of nonlinear Kalman filter applying MMG model 应用MMG模型实现非线性卡尔曼滤波的研究

4区工程技术

Journal of Marine Science and Technology Pub Date : 2023-10-28 DOI: 10.1007/s00773-023-00953-6

Hiroaki Koike, Leo Dostal, Ryohei Sawada, Yoshiki Miyauchi, Atsuo Maki

{"title":"A study on the implementation of nonlinear Kalman filter applying MMG model","authors":"Hiroaki Koike, Leo Dostal, Ryohei Sawada, Yoshiki Miyauchi, Atsuo Maki","doi":"10.1007/s00773-023-00953-6","DOIUrl":"https://doi.org/10.1007/s00773-023-00953-6","url":null,"abstract":"Abstract Many technologies need to be established to realize autonomous ships. In particular, accurate state estimation in real time is one of the most important technologies. In the ship and ocean engineering fields, there have been many studies on state estimation using nonlinear Kalman filters. Several methods have been proposed for nonlinear Kalman filters. However, there is insufficient verification on the selection of which filter should be applied among them. Therefore, this study aims to validate the filter selection to provide a guideline for filter selection. The effects of modeling error, observation noise, and type of maneuvers on the estimation accuracy of the unscented Kalman filter () and ensemble Kalman filter () used in this study were investigated. In addition, it was verified whether filtering could be performed in real time. The results show that modeling error significantly impacts the estimation accuracy of the and . However, the observation noise and types of maneuvers did not have an impact like the modeling error. Thus, we obtained the guideline that and should be used differently depending on the required computation time. We also obtained that keeping the modeling error sufficiently small is essential to improving the estimation accuracy.","PeriodicalId":16334,"journal":{"name":"Journal of Marine Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136161047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0