Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management最新文献_第2页

Training of Fiberglass Boat Repair for Gresik’s Fisherman to Improve Fiberglass Boat Quality of Boat Construction following the Indonesian Classification Regulations 为Gresik渔民提供玻璃纤维船维修培训，以提高按照印尼入级规定建造的玻璃纤维船的质量

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010141502550259

D. Purwanto, M. Arif, Nurul Hidayati

引用次数: 0

Project Planning of Offshore Pipelines Replacement: Study Case at Offshore North West Java 海上管道更换项目规划:以西北爪哇海上为例

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010057701130121

Jordy Apcar, .. Silvianita, D. Rosyid, M. Khamidi, Januar Murdan

{"title":"Project Planning of Offshore Pipelines Replacement: Study Case at Offshore North West Java","authors":"Jordy Apcar, .. Silvianita, D. Rosyid, M. Khamidi, Januar Murdan","doi":"10.5220/0010057701130121","DOIUrl":"https://doi.org/10.5220/0010057701130121","url":null,"abstract":"There are many factors that lead to project delay, for example hurricane, one of weather factors that make it impossible to do work or factors like lack of utilities and construction equipment, delays in purchasing material orders, lack of experienced and skilled human resources in the field, delay costs down to purchase activities on the project. In addition, there are delays in critical activities because they have a large impact on the duration of the project. Therefore, it is necessary to do an analysis by looking for activities that are critical to the project and factors that can cause delays in the new pipeline project because it can endanger the owners and contractors. This study will discuss three factors, i.e. (1) the determination of the critical path, (2) the determination of the root causes that can cause delays, and (3) the risk of over time, of new pipelines replacement project in North West Java, Indonesia. There are 4 indications of delay in this project, which are delay that occurred in June 2018, September 2018, and October 2018. The biggest deviation between the targeted value and the actual value occurred in October 2018, which was 5,05%. This study uses six sigma methods, critical path, fault tree analysis and event tree analysis. The results of fault tree analysis will get the probability value for the top event of the project delay. The results of the event tree analysis will get the risk level of each factor that causes delays. Six sigma results will get to the root of the problem, the value of sigma, and what corrective action is taken.","PeriodicalId":267695,"journal":{"name":"Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126656945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wind and Significant Wave Height at Indonesian Seas based on ERA5 Reanalysis Data from 2008 to 2018 基于ERA5再分析数据的印尼海域2008 - 2018年风和有效波高

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010060001730180

Ocha Bahtara, M. Zikra

引用次数: 0

Dynamic Behavior Analysis of Porous Saw Floating Breakwater under Regular Waves 规则波浪作用下多孔锯式浮式防波堤动力特性分析

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010119102120217

.. Sujantoko, E. Djatmiko, W. Wardhana, H. Armono, .. Wahyudi

{"title":"Dynamic Behavior Analysis of Porous Saw Floating Breakwater under Regular Waves","authors":".. Sujantoko, E. Djatmiko, W. Wardhana, H. Armono, .. Wahyudi","doi":"10.5220/0010119102120217","DOIUrl":"https://doi.org/10.5220/0010119102120217","url":null,"abstract":"Porous saw floating breakwaters are floated and tethered breakwaters for coastal protectors with typical steep, deep, and relatively large choppy contours, designed with saw porous, to be able to absorb waves efficiently and effectively. A proposed numerical model was developed for the porous saw type, while the model for the pontoon and the saw type will be used as a comparative study. All types of the structure breakwaters were physically placed inside the flume tank in which the direction of waves was perpendicular (to the structure) with 3 cm height and 1.1 seconds of period conducted in 41 cm depth of water. The numerical model shows that the Response Amplitude Operators (RAO) only affect the sway, heave, and roll motions. The porous saw floating breakwater demonstrates the smallest RAO value among other types i.e. sway 0.66 cm/cm, heave 2.1 cm/cm, and roll 0.86 deg/cm. It means the porous saw type more advantages since the ability to absorb the wave. Moreover, some of the wave energy will be reduced when the wave passes through the structure. Therefore, the wave energy received by the structure and the mooring rope becomes smaller.","PeriodicalId":267695,"journal":{"name":"Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116778003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Numerical Modeling of Vertical Axis Hydro Turbine with Experimental Validation 垂直轴水轮机数值模拟及实验验证

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010046900220029

A. Yasim, .. Mukhtasor, S. Rahmawati, .. Widodo, .. Madi

引用次数: 0

Thermal Front in the North of Java Sea, Indonesia 印度尼西亚爪哇海北部的热锋

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010060701980206

Risfiadela Ristyatmaja, Supriyatno Widagdo, Viv Djanat Prasita

{"title":"Thermal Front in the North of Java Sea, Indonesia","authors":"Risfiadela Ristyatmaja, Supriyatno Widagdo, Viv Djanat Prasita","doi":"10.5220/0010060701980206","DOIUrl":"https://doi.org/10.5220/0010060701980206","url":null,"abstract":"Indian Ocean Dipole (IOD) is a phenomenon in the Indian Ocean caused by differences in the anomaly of Sea Surface Temperature (SST) between the West Coast of Sumatra and the East Coast of Africa. The phase difference of the formation of positive IOD (+) and negative IOD (-). The IOD phase can be known by using the Dipole Mode Index (DMI). This research aims to identify the effect of IOD phase on SST and distribution thermal front. Identification of distribution using the Pearson method, and analysis of the distribution thermal front using the Single Image Detection (SIED) method. Area research in North Java Seas during wet season 2013-2015. IOD phase with normal condition more often occure than IOD phase with weakly condition. Strong correlation occurred with negative direction, and moderate correlation occured with positive direction. Meanwhile, correlation IOD with rainfall not significant or uncorrelation. During five years the heat temperature was concentrated in the coastal area. IOD with normal condition has a larger thermal front area 1976 km2, while IOD with weakly condition has a 624 km2 thermal front area. Thermal front distribusion more often occure on north area of Central Java with a longwise and widing distribusion.","PeriodicalId":267695,"journal":{"name":"Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124789925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrodynamic Modelling of Flood Inundation on Welang River, Indonesia 印尼威朗河洪水淹没的水动力模拟

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010218602690274

Ilham Cahya, .. Suntoyo

引用次数: 0

Experimental Study of the Effect of Waves on SPAR Responses with and without Heave Plate in Intact and Damaged Mooring Systems 完整与受损系泊系统中波浪对有和无升沉板的SPAR响应影响的实验研究

Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management Pub Date : 1900-01-01 DOI: 10.5220/0010060101810190

.. Murdjito, Gilrandi Negoro, E. Djatmiko, Baharuddin Ali

{"title":"Experimental Study of the Effect of Waves on SPAR Responses with and without Heave Plate in Intact and Damaged Mooring Systems","authors":".. Murdjito, Gilrandi Negoro, E. Djatmiko, Baharuddin Ali","doi":"10.5220/0010060101810190","DOIUrl":"https://doi.org/10.5220/0010060101810190","url":null,"abstract":": This research discusses the effects of heave plate utilization against dynamic responses of SPAR due to random waves. The analysis has been done by numerical and experimental methods. The experimental method was held in Maneuvering Ocean Engineering Basin of Balai Teknologi Hidrodinamika (BTH) – BPPT. The model scale of SPAR was constructed based on the classic SPAR prototype with taut mooring systems using four identical moorings in a 1:125 scale factor. Both experimental and numerical studies were conducted in time domain analysis with heave plate utilization in the keel of SPAR as the main variable. The diameter of the heave plate has a 1.5 ratio to the outer diameter of SPAR. Each analysis was conducted in intact and damaged mooring systems. The analyzed variables of dynamic responses are the surge, heave, pitch, and maximum offset of the SPAR. Results of both the experimental and numerical studies were then be compared, showing that the heave plate does not affect surge and pitch responses significantly. On the other hand, it significantly and consistently reduces the SPAR heave responses in every condition of analysis in both the numerical and experimental methods. The most significant reduction of SPAR heave response occurred when the mooring systems were in damaged condition, i.e., 33.29% and 27.84% heave reduction in the experimental and numerical method, respectively. The study also shows that the heave plate reduces SPAR maximum offset up to 31.69% in experimental analysis and 11.22% in numerical analysis.","PeriodicalId":267695,"journal":{"name":"Proceedings of the 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134365844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0