Frontiers in Ocean Engineering最新文献

Numerical Simulation of Dynamic Fluid-Solid Coupling of Saturated Soil 饱和土动态流固耦合数值模拟

Frontiers in Ocean Engineering Pub Date : 2023-06-06 DOI: 10.38007/foe.2023.040101

Z. Pan, Bowen Wu, Yubing Niu, Tengfei Yan

引用次数: 0

Hydrodynamic Numerical Calculation Method of Small-scale Objects in Ocean Engineering Based on Immersion Boundary Method 基于浸入边界法的海洋工程小尺度目标水动力数值计算方法

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030401

Prusa Filip

{"title":"Hydrodynamic Numerical Calculation Method of Small-scale Objects in Ocean Engineering Based on Immersion Boundary Method","authors":"Prusa Filip","doi":"10.38007/foe.2022.030401","DOIUrl":"https://doi.org/10.38007/foe.2022.030401","url":null,"abstract":": Isolated piles, jacket platforms, submarine pipelines, etc. are ubiquitous structures in marine engineering. When the ratio of the lateral dimension D to the wavelength L of the part surrounded by waves is less than 0.2, it is generally called a small-scale structure. Current and waves are the two most important external loads in ocean engineering. The interaction between current and waves and small-scale structures in ocean engineering has always been the focus of research, and it is also one of the main problems that have not been well resolved in ocean engineering. In this paper, under the premise of considering the viscosity, turbulence and free surface flow of the fluid, the hydrodynamic problems related to small-scale objects in marine engineering are selected as the research content, and the numerical calculation model combining the immersion boundary method and the fluid volume method is selected for numerical calculation. The numerical expressions, solution steps and method verifications of the immersion boundary method and the fluid volume method are given respectively. A numerical calculation method by directly solving the external force source term in the immersion boundary method is proposed. The advantages, disadvantages and calculation steps of two different processing methods of applied force source terms in the immersion boundary method, continuous force method and discrete force method, are given. Instead of solving the force source term by means of interpolation and extrapolation, this paper adopts the discrete force method and the immersion boundary method for numerical calculation. Bounds method for numerical calculation. The realization process","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133104625","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

Identification of Structural Parameters of Offshore Platforms Based on Reality and Virtual Technology 基于现实与虚拟技术的海洋平台结构参数辨识

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030406

Vempaty Bisen

{"title":"Identification of Structural Parameters of Offshore Platforms Based on Reality and Virtual Technology","authors":"Vempaty Bisen","doi":"10.38007/foe.2022.030406","DOIUrl":"https://doi.org/10.38007/foe.2022.030406","url":null,"abstract":": Offshore platforms have complex structures, high construction costs and harsh operating environments. To prevent serious and fatal accidents, regular/irregular inspections and safety assessments of outdoor platform systems are required during work. Especially for external platforms in the middle and late stages of operation and platforms that are not running, it is more important to perform effective health detection. The purpose of this paper is to study the identification of structural parameters of offshore platforms based on the reality and virtual technology. This paper summarizes the feedback-based linear structure parameter identification methods at home and abroad in recent years, and makes a comprehensive analysis of its application origin, research importance, research status at home and abroad, existing research methods and existing problems. This paper points out that the main problem in the application of output response-based modal parameter identification technology in the field of water engineering is to eliminate the noise and null conditions of measurement signals and signal keys. Denoising and removing spurious noise is a logical model command. Experiments have shown that the recognition results are very close to the real values, and the recognition accuracy will decrease in the presence of noisy signals, and the use of virtual reality technology can improve the accuracy by about 10%.","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127273472","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 Characteristics of Ocean Engineering Numerical Pool Benchmark Model Relying on Numerical Simulation 基于数值模拟的海洋工程数值池基准模型水动力特性研究

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030408

Mayank Verma

{"title":"Hydrodynamic Characteristics of Ocean Engineering Numerical Pool Benchmark Model Relying on Numerical Simulation","authors":"Mayank Verma","doi":"10.38007/foe.2022.030408","DOIUrl":"https://doi.org/10.38007/foe.2022.030408","url":null,"abstract":": The development of water resources and energy is increasing day by day, including the exploration and development of marine resources and natural gas. Over the past 30 years of reform and opening up, my country's economic development has made remarkable achievements, high-tech enterprises and power plants have also developed rapidly, and the demand for electricity and resources is also increasing. The purpose of this paper is to study the hydrodynamic characteristics of the numerical pool benchmark model for marine engineering relying on numerical simulation. This paper develops a numerical model for a design reference test case of a semi-submersible platform and predicts the hydrodynamic properties under three typical operating conditions, namely survival and pumping, space acceleration operation, etc. Comparing the dynamic response calculation results with the existing sixth-generation response numerical simulation results, the trend is consistent, which proves that the model is as reasonable and advanced as the reference model. In this paper, the comparative results of numerical simulations are analyzed. The motion performance of the platform and its motion system under different conditions, such as changing the height of the center of gravity, changing the composition of the mooring line, changing the initial pre-tightening angle of the line mooring, and breaking the line under its influence are studied. The results of the difference law of displacement and motion between the platform and the mooring system provide a specific reference for the optimal design of the platform. Experiments show that the maximum relative errors of mooring line tension, heave motion","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128263241","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

Relationship between Marine Resources growth and Marine Economy Based on Neural Network 基于神经网络的海洋资源增长与海洋经济关系研究

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030404

Gachuno Onesmus

{"title":"Relationship between Marine Resources growth and Marine Economy Based on Neural Network","authors":"Gachuno Onesmus","doi":"10.38007/foe.2022.030404","DOIUrl":"https://doi.org/10.38007/foe.2022.030404","url":null,"abstract":": With the rapid growth of China's economy, people pay more and more attention to marine resources. In the process of growth and utilization, how to deal with the relationship with the marine ecological environment is also a great challenge for us. In this paper, the domestic and foreign research and analysis on protecting the marine environment, carrying out large-scale marine engineering activities and promoting sustainable fishery production are carried out, and classified and summarized. Through the establishment of models to predict the factors affecting the coastline of the coastal seabed zone and their change rules in different stages, according to the historical data of marine resources, artificial neural networks(NN) are constructed using NN algorithms to study the regional water and soil conservation planning and growth measures based on the marine ecological environment. Finally, the model is simulated and tested. The test results show that the marine resource growth model based on neural algorithm has short data processing time and low delay time, which indicates that the algorithm can meet the operational requirements of the marine resource model.","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126662213","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

Development Trend of Ocean Engineering Based on Literature and Patent Analysis 基于文献与专利分析的海洋工程发展趋势

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030405

Logesh Lakshmi

{"title":"Development Trend of Ocean Engineering Based on Literature and Patent Analysis","authors":"Logesh Lakshmi","doi":"10.38007/foe.2022.030405","DOIUrl":"https://doi.org/10.38007/foe.2022.030405","url":null,"abstract":": The development trend of Marine engineering had different time, at different times have different research focus, from the patent literature level on the trend of development of ocean engineering is analyzed, the build is based on the analysis of the patent literature and ocean engineering development situation, the research to the development of ocean engineering technology in the field is of great significance. In order to solve the existing literature and patent analysis based Marine engineering development trend research of ocean engineering function equation based on patent analysis based on map and patent literature analysis method is discussed on the basis of the analyses based on the literature and patents of ocean engineering development trend research of search keywords and data source has carried on the simple introduction. And based on the existing literature and ocean engineering development trend of patent analysis model of workflow design is discussed, finally the existing based on the analysis of ocean engineering and patent application development situation of experimental analysis, the experimental data show that the number of patent for academic and research in ocean engineering from 1987 to 2007 before the slow growth, However, the number of patents showed a significant growth trend from 2007 to 2017, and reached 150 after 2020. Therefore, the research on the development situation of ocean engineering based on literature and patent analysis has certain reference significance.","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125266416","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

Ecological Problems in Ocean Engineering Construction Based on Fuzzy Recognition 基于模糊识别的海洋工程建设生态问题

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030403

Univ Porto

{"title":"Ecological Problems in Ocean Engineering Construction Based on Fuzzy Recognition","authors":"Univ Porto","doi":"10.38007/foe.2022.030403","DOIUrl":"https://doi.org/10.38007/foe.2022.030403","url":null,"abstract":": With the development of large-scale building structures and complex structures such as hydraulic engineering and marine engineering (ME), their health during work is related to the vital interests of all parties. The combination of environmental corrosion, material aging, long-term effects of loads, and fatigue factors will cause structural damage, reduce the ability of the structure to resist external influences, and inevitably lead to a decline in the safety of structural performance. ME structures have been operating in harsh marine environments for a long time. Using intelligent monitoring technology to process monitoring signals can invert the damage status of the structure, or use a variety of information to evaluate the overall safety of the structure. The main purpose of this paper is to study the ecological problems in ME construction based on fuzzy identification. Based on fuzzy identification technology, this paper analyzes and studies the environmental risk events existing in the whole process of ME from planning, design, construction and operation, and establishes the risk assessment method and process for the environmental impact of ME construction. Experiments show that ME mainly affects the marine ecological environment from the following four aspects: 1) The occupation of engineering sediment and the impact of dredging operations on benthic organisms; 2) The impact of underwater blasting operations on aquatic organisms; 3) Suspended matter The impact on the marine ecological environment; 4) The impact of domestic sewage, machine sewage and other pollutants on the marine ecological environment.","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130354288","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

Quality Management of Offshore Engineering Project Based on Clustering Algorithm 基于聚类算法的海洋工程项目质量管理

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030402

Zecevic Petar

引用次数: 0

Dynamic Calculation of Waves in Ocean Engineering Based on Damping Waves 基于阻尼波的海洋工程波浪动力计算

Frontiers in Ocean Engineering Pub Date : 2022-10-30 DOI: 10.38007/foe.2022.030407

Kothapalli Ahmad

{"title":"Dynamic Calculation of Waves in Ocean Engineering Based on Damping Waves","authors":"Kothapalli Ahmad","doi":"10.38007/foe.2022.030407","DOIUrl":"https://doi.org/10.38007/foe.2022.030407","url":null,"abstract":": With the development of numerical computer simulation technology, the application of numerical wave troughs to simulate the motion and deformation of waves and their interaction with the ground has become an important development direction of computational fluid dynamics. The purpose of this paper is to study the dynamic calculation of waves in marine engineering based on damping waves. In this paper, the study of the irregular wave reflection of numerical wave flow is based on the VOF method. Taking the turbulent motion-Reynolds equation as the governing equation, the negative work technique is used in the near-wall region. The active receiver is placed on the left side of the waveform generator. The absorbing effects of different attenuation coefficient sponge layers and the effects of different attenuation coefficient power ratios on water reflection in the tank were compared. Good cleaning power. It can be seen from the spatial distribution of the wave surface height in the water tank along the water tank that the selected attenuation coefficient of the sponge layer can reduce the traveling wave in this region by one to two times the length and width. The spectra under different reservoir conditions are in good agreement with the target. The numerical calculation results show that the wave sponge cold resistance technology adopted in this paper can avoid the reflection at the output boundary. Combined with the active wave generation technology, the irregular wave based on the VOF method does not show the numerical groove of the wave.","PeriodicalId":103481,"journal":{"name":"Frontiers in Ocean Engineering","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125758674","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

Influence of Performance Calculation Method Based on Kinetic Energy Theorem on Tidal Power Generation in Offshore Engineering 基于动能定理的性能计算方法对近海潮汐能发电的影响

Frontiers in Ocean Engineering Pub Date : 2022-08-10 DOI: 10.38007/foe.2022.030304

引用次数: 1