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1-20 of 77
Keywords: prediction
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Journal Articles
Int. J. Offshore Polar Eng. 33 (02): 164–173.
Paper Number: ISOPE-23-33-2-164
Published: 01 June 2023
...Jae-Hoon Lee; Jaehak Lee; Yonghwan Kim; Yangjun Ahn _ This paper investigates the possibility of the machine learning technique being applicable in the real-time prediction of wave-induced ship motions. An integrated machine learning model is proposed by considering the two different physical...
Journal Articles
Int. J. Offshore Polar Eng. 32 (04): 411–417.
Paper Number: ISOPE-22-32-4-411
Published: 01 December 2022
... build a model based on sample data, known as training data, to make predictions or decisions without being explicitly programmed to do so. Adytia et al. (2018) used the autoregressive integrated moving average (ARIMA) model to predict the significant wave height obtained from the SWAN numerical model...
Journal Articles
Int. J. Offshore Polar Eng. 32 (04): 386–393.
Paper Number: ISOPE-22-32-4-386
Published: 01 December 2022
...Xiao Lang; Da Wu; Wengang Mao _ This paper proposes a machine learning–based ship speed over a ground prediction model, driven by the eXtreme Gradient Boosting (XGBoost) algorithm. The data set is acquired from a world-sailing chemical tanker with five years of full-scale measurements. The model...
Journal Articles
Int. J. Offshore Polar Eng. 32 (04): 394–401.
Paper Number: ISOPE-22-32-4-394
Published: 01 December 2022
...Qiang Liu; Xingya Feng; Tianning Tang _ In this paper, we propose a least square support vector machine (LSSVM) model to predict ocean wave elevations in a random sea state. The frequency and time domain characteristics of historical wave data were both considered in the proposed model. The wave...
Journal Articles
Int. J. Offshore Polar Eng. 31 (03): 275–282.
Paper Number: ISOPE-21-31-3-275
Published: 01 September 2021
...Siyuan Yu; Wenhua Wu; Arvid Naess Current loads are key environment loads in offshore engineering. In this paper, the empirical orthogonal function (EOF) and the average conditional exceedance rate (ACER) methods are used to develop the extreme prediction of current speed profile with different...
Journal Articles
Int. J. Offshore Polar Eng. 29 (02): 158–164.
Paper Number: ISOPE-19-29-2-158
Published: 01 June 2019
... the numerical results. For the industry to benefit from the strengths of these methods, there is a need for a parametric understanding of their predictive capability and a reduction in the time taken to produce useable results. The required time to set up CFD simulations is a factor, often overlooked...
Journal Articles
Edward Ransley, Shiqiang Yan, Scott Andrew Brown, Tri Mai, David Graham, Qingwei Ma, Pierre-Henri Musiedlak, Allan Peter Engsig-Karup, Claes Eskilsson, Qian Li, Jinghua Wang, Zhihua Xie, Sriram Venkatachalam, Thorsten Stoesser, Yuan Zhuang, Qi Li, Decheng Wan, Gang Chen, Hao Chen, Ling Qian, Zhihua Ma, Clive Mingham, Derek Causon, Inno Gatin, Hrvoje Jasak, Vuko Vukcevic, Steven Downie, Pablo Higuera, Eugeny Buldakov, Dimitris Stagonas, Qiang Chen, Jun Zang, Deborah Greaves
Int. J. Offshore Polar Eng. 29 (02): 113–127.
Paper Number: ISOPE-19-29-2-113
Published: 01 June 2019
...), are presented. Participants, with a range of numerical methods, simulate blindly the interaction between a fixed structure and focused waves ranging in steepness and direction. Numerical results are compared against corresponding physical data. The predictive capability of each method is assessed based...
Journal Articles
Int. J. Offshore Polar Eng. 28 (02): 171–181.
Paper Number: ISOPE-18-28-2-171
Published: 01 June 2018
...Peng Wen; Wei Qiu This paper presents improved numerical methods to predict slamming forces/pressures on a wedge with different tilted angles and on a ship section with various drop heights. The water-entry problem was solved by using a constrained interpolation profile (CIP) method on a fixed...
Journal Articles
Int. J. Offshore Polar Eng. 28 (02): 206–211.
Paper Number: ISOPE-18-28-2-206
Published: 01 June 2018
..., predicting the yield strength of the UOE pipe constitutes a difficult task because of the alteration of the material properties throughout the forming process. Moreover, the yield strength is measured by tensile test executed on specimens obtained by flattening samples cut from the formed pipe...
Journal Articles
Int. J. Offshore Polar Eng. 27 (04): 346–356.
Paper Number: ISOPE-17-27-4-346
Published: 01 December 2017
...Torsten Wichtmann; Theodoros Triantafyllidis; Stylianos Chrisopoulos; Hauke Zachert The paper presents three engineer-oriented models based on the high-cycle accumulation (HCA) model of Niemunis et al. (2005), dedicated to the prediction of long-term deformations of offshore wind power plant (OWPP...
Journal Articles
Int. J. Offshore Polar Eng. 27 (04): 442–447.
Paper Number: ISOPE-17-27-4-442
Published: 01 December 2017
.... From a designer's point of view, the need to improve the available methods for efficiency prediction and optimization to achieve better solutions at very preliminary design phases is clear. For example the IMO (2009a, 2009b) introduces technical and economical indexes for emissions regulation, namely...
Journal Articles
Int. J. Offshore Polar Eng. 26 (01): 33–40.
Paper Number: ISOPE-16-26-1-033
Published: 01 March 2016
... found to suffer from unphysical fluctuations in pressure prediction. This is caused by small density errors in calculation, which can be amplified through the equation of state. Some effective treatments have been made to correct the density errors and kernel gradient errors, which significantly...
Journal Articles
Int. J. Offshore Polar Eng. 26 (01): 72–80.
Paper Number: ISOPE-16-26-1-072
Published: 01 March 2016
...Akira Hanaoka; Yasutaka Kawanami; Munehiko Hinatsu The quasi-continuous method (QCM) was applied to open-water thrust and torque predictions of ducted propellers with different positions of the propeller and duct. Two methods to calculate the resultant velocity were discussed. The QCM results...
Journal Articles
Int. J. Offshore Polar Eng. 25 (03): 239–240.
Paper Number: ISOPE-15-25-3-239
Published: 01 September 2015
... can be readily employed for the simulation of various critical wave events, as described in Jensen (2009), Schellin et al. (2013), Oberhagemann et al. (2012), and Ley et al. (2013). freight & logistics services CFD Simulation prediction random wave Chen marine transportation Simulation...
Journal Articles
Int. J. Offshore Polar Eng. 25 (02): 97–103.
Paper Number: ISOPE-15-25-2-097
Published: 01 June 2015
...Chang Seop Kwon; Oh Joon Kwon; Sung Wook Lee; Hee Taek Kim The purpose of this research is to find practical methods to predict the course stability of towed offshore structures at the initial design stage. The equilibrium yaw angles of a towed Floating Production Storage and Offloading (FPSO...
Journal Articles
Int. J. Offshore Polar Eng. 25 (01): 35–44.
Paper Number: ISOPE-15-25-1-035
Published: 01 March 2015
...) modelling is based on the Unsteady Reynolds-averaged Navier-Stokes (URANS) equations with the use of a hybrid meshing scheme through systematic grid refinement. The obtained CFD predictions were validated through Experimental Fluid Dynamics (EFD) utilising a captive model fitted to a Horizontal Planar...
Journal Articles
Int. J. Offshore Polar Eng. 24 (04): 292–300.
Paper Number: ISOPE-14-24-4-292
Published: 01 December 2014
... the strain-based behavior of pipelines under imposed displacement necessitated the development of full-scale testing facilities and numerical/analytical models for buckling prediction. This paper presents a new analytical formulation for the estimate of pipe strain capacity against buckling. Its development...
Journal Articles
Int. J. Offshore Polar Eng. 23 (03).
Paper Number: ISOPE-13-23-3-210
Published: 01 September 2013
... condition on the propeller and turbine wake surfaces. It was found that the position of the trailing wake is very important in predicting the performance of propellers or turbines in steady or unsteady flow. The effects of a non-linear interaction between the inflow and the propeller/turbine blades have...
Journal Articles
Int. J. Offshore Polar Eng. 23 (01).
Paper Number: ISOPE-13-23-1-069
Published: 01 March 2013
... and utilizes a modified matching and free-surface boundary conditions for the rock-filled core. Using the experimental work of previous authors, the predictability of the developed model is verified. This paper interprets and examines how nonpropagating waves affect the hydraulic behavior of the breakwater...
Journal Articles
Int. J. Offshore Polar Eng. 23 (01).
Paper Number: ISOPE-13-23-1-073
Published: 01 March 2013
... viscosity turbulence model vortex core prediction boundary grid experimental data computational domain Vortex Flow hsiao pauley marine propeller equation International Journal of Offshore and Polar Engineering (ISSN 1053-5381) httpwww.isope.org/publications Copyright © by The International...
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