Day 1 Wed, March 08, 2023最新文献

{"title":"Method to Develop Fast Response & Live Cruise CFD Data Stream to Digital Twinning Control Software","authors":"Serdar Firkan","doi":"10.5957/tos-2023-006","DOIUrl":"https://doi.org/10.5957/tos-2023-006","url":null,"abstract":"The digital twinning is an important aspect of the evolving vessel management systems to reduce fuel consumption and predict operational parameters along the cruise route. Although the digital twinning of the vessels heavily operates on “pre-loaded” resistance data and engine parameters, it is becoming more important to generate real-time hydrodynamic & aerodynamic resistance data during cruising, with incoming weather, sea current and vessel trim/damage floating conditions along the route. For this purpose, the author aimed to develop a faster CFD methodology & algorithm to calculate the hydrodynamic & aerodynamic resistances, and then send the output to the digital twinning software of the vessel. The author aimed to develop a CFD code and algorithm that can be embedded to any Artificial Intelligence (A.I.) or Vessel Management Software to generate the resistance data in real time. The complexity of grid generation for RANSE calculations requires high density computer resources which increases the response time of the CFD software and the data flow. The other complexity is the adaptation of the “live cruise parameters” to the CFD software which significantly increases the calculation time. Although most programs focus on hydrodynamic calculation, with the implementation of this algorithm, both aerodynamic and hydrodynamic resistances of the vessel can be calculated at the same time.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121987519","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}

{"title":"Case Study of Creating a Brand New, Ultra-efficient, Data-driven Offshore Independent Operator","authors":"Adrian Purdy, Colin Frost","doi":"10.5957/tos-2023-012","DOIUrl":"https://doi.org/10.5957/tos-2023-012","url":null,"abstract":"Supermajors and larger operators are offloading mature assets to focus their capital on funding newer assets and energy transition. Investors see opportunities for free cash flow generation. Ultra-efficiency is key. Data Science is seen as a key enabler. To that end, Cantium, a brand-new data-driven independent operator was formed in 2017. This paper describes how the digital oil company was created, the data science technologies and methods that were employed, the challenges, lessons learned and critical success factors and how value was created over time.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115001543","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}

{"title":"Port Infrastructure Upgrade for Offshore Wind and Commercial Fishing","authors":"B. Stone, Ceasar Duarte","doi":"10.5957/tos-2023-008","DOIUrl":"https://doi.org/10.5957/tos-2023-008","url":null,"abstract":"For the past 21 years and counting, the Port of New Bedford has been America’s highest grossing commercial fishing port and the epicenter of the industry on the East Coast. According to one recent study, the Port generates – largely through fishing, seafood processing, and related businesses – over $11 billion in economic output and supports nearly 7,000 jobs. The Port is the primary economic engine of Southeastern Massachusetts.\u0000 As a means of diversifying the region’s economic base, New Bedford Mayor Jon Mitchell and his Administration have worked for nearly a decade to position New Bedford to become the leader in offshore wind. New Bedford is now in a highly advantageous position to support the emergence of the American offshore wind industry. It is the closest industrial port to the Massachusetts and Rhode Island Wind Energy Areas, the largest cluster of wind energy areas on the East Coast with the acreage to support development of 14 GW of offshore wind power. As a result, the Port of New Bedford has the distinction of being the first U.S. port to host the marshalling and construction of a commercial-scale offshore wind development project. This effort requires a great deal of preparation, investment, and planning, much of which is well underway.\u0000 The goal of the New Bedford Port Authority is to promote development that allows both commercial fishing and offshore wind industries to thrive. This paper discusses the various public and private infrastructure investments in the Port. These investments are creating new bulkhead and terminal space as well as rehabilitating derelict waterfront properties. Because New Bedford Harbor is a Superfund site, most of these infrastructure developments are permitted through the State Enhanced Remedy (SER) process. This process enables projects that meet specific criteria through the Record of Decision to be permitted within weeks rather than months. Several public and private projects permitted through the SER process are, by necessity, interdependent..","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130755241","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}

{"title":"Hydrodynamic Analysis of Ducted Marine Turbine: Study on the Duct and Turbine Efficiency","authors":"Seunghyun Kim, K. S. Kumar, S. Kinnas","doi":"10.5957/tos-2023-003","DOIUrl":"https://doi.org/10.5957/tos-2023-003","url":null,"abstract":"This paper presents a boundary element method applied to the numerical prediction of ducted turbine performance. The model turbine is a horizontal axis marine current turbine subject to the uniform inflow. For this type of steady problem, BEM runs much faster than a finite-volume-method-based viscous simulation, thus facilitating the analysis of different turbine configurations. The primary purpose of this study is to investigate how different duct shapes and loading conditions affect ducted turbine performance compared to those from open turbines. Unlike a lifting line model, a commonly used technique for turbine research, the present method does not require simplifying the turbine geometry and trailing wake. Instead, the blade and duct trailing wakes are fully aligned based on the local stream representing the expansion/contraction of the trailing wakes and their mutual interactions. Predicted force and power coefficients are compared with open turbine performance to see how the presence of the duct influences the overall turbine efficiency. The predicted results show that the ducted turbine performance is significantly affected by the flow induced by the duct and its vertical elevation from the blade tip.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124654061","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}

{"title":"Embedded Sensor Technology Application for Offshore Energy Industry","authors":"Achyut Allady, Ramesh Maini","doi":"10.5957/tos-2023-015","DOIUrl":"https://doi.org/10.5957/tos-2023-015","url":null,"abstract":"Offshore structures have been the backbone of the energy industry for a long time. But questions remain about how much strain, displacement, settlement, and other variables affect the various elements of the Offshore structure. How are these variables verified and compared to design loads? By mathematical and finite element methods only? With rapidly advancing sensor technologies, Offshore energy leaders have, out of necessity, started introducing advanced technologies like Smart Structures’ Embedded Data Collectors (EDCs) for reinforced concrete pile foundation elements, as well as sensor technology for external contact monitoring on steel elements. How can EDC technology transform the integrity of Offshore structures?\u0000 EDC technology involves the use of embedded sensors located inside structural and sub-structural elements, along with a wireless radio transmitter and laptop software to analyze data. On a number of projects by Smart Structures, sensor packages have been embedded in the harsh environment of concrete casting in numerous ways commensurate with the nature of superstructures and substructures. After the concrete sets, the concrete elements, embedded with sensors, are transported without damage to a construction site and installed. EDC further enables long-term remote acquisition of measured data and the real-time transmission of the data from an in-service structure through an IoT-based cloud system. This technology offers endless possibilities to connect and integrate with a host of IoT devices and a host of platforms for many applications with multiple data-gateway options.\u0000 Potential smart sensor technology applications in offshore structures include: jack-up rig spudcans, legs, jack-house assembly, and pinions; wind turbine structure foundations, mooring-line suction piles, superstructures, bridges and various monopod structures.\u0000 This paper discusses the potential for the broader application of EDC technology, already in use in surface transportation infrastructure, to the offshore energy industry. It enumerates multiple benefits related to real-time measured data.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132249014","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}

{"title":"Classification of Single Point Moorings as Offshore Battery Charging Stations","authors":"J. Rousseau, Jude Tomdio","doi":"10.5957/tos-2023-021","DOIUrl":"https://doi.org/10.5957/tos-2023-021","url":null,"abstract":"For vessels which operate offshore for extended periods, there has been industry interest in providing means to recharge the battery systems without repeated return to port. Solutions would ideally use renewably sourced power as opposed to onboard charging from diesel engines.\u0000 The electric charging buoy is a concept that has arisen based on existing technologies from the single point mooring (SPM) buoy. To support this innovation, we can draw from experience with offshore vessels, SPMs, and electrical transmission and storage systems as they relate to safety of personnel and assets at sea. The result has been the development of Classification requirements for charging buoys which address issues such as system design, operating philosophy, operations, testing and verification. Electrical safety and establishing connections in a marine environment are fundamental to deploying this technology.\u0000 Key factors include the buoy structure, power sources (e.g. onshore grid connection, offshore substation, offshore wind turbines), voltage ranges, power quality, maximum allowable current, and on-buoy systems such as transformers, converters, and cables. It is also important to address risks related to vessel profiles for connection time to the buoy and the environmental conditions which may be experienced.\u0000 This paper outlines the considerations for SPM-based charging and the process by which existing standards have been combined with established practice to develop criteria, including input from interested stakeholder organizations that are engaged in battery powered operations. The new Rules are presented along with their underlying goals. Readers will gain an understanding of the process and the importance of supporting innovation in the energy transition, from the design stage through construction and in-service surveys.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120946509","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}

{"title":"Numerical Prediction of Skin Friction Coefficient by Coupling a Bem with X-Foil: Effect on the Hydrofoil and Propeller Performance","authors":"Thomas S. Wu, Seunghyun Kim, S. Kinnas","doi":"10.5957/tos-2023-007","DOIUrl":"https://doi.org/10.5957/tos-2023-007","url":null,"abstract":"A boundary element method (BEM) has been commonly used in a hydrofoil or propeller performance analysis. The effect of viscosity is often considered by applying a constant empirical friction coefficient over the blade, which does not fully consider the development of the boundary layer. In this paper, a three-dimensional (3D) low-order BEM is coupled with an originally two-dimensional boundary layer solver, X-foil, to evaluate the effect of viscosity on the blade surface and predict the open water characteristics of the 3D hydrofoil and propeller. During the process, the boundary layer equations are solved at each section, where the 2D influence coefficients in X-foil have been replaced by the 3D influence coefficients, corresponding to the panels at each strip, with the effect of the boundary layer sources from the other sections and the other blades being considered, in an iterative sense. Then, the viscous/inviscid interactive method is employed to calculate the skin friction coefficient, which significantly improves the prediction of friction and pressure distribution on the blade, and the efficiency of the propeller. Subsequently, full-blown Reynolds Averaged Navier-Stokes (RANS) simulations are conducted to validate the predicted results under various conditions. The results demonstrate that the skin friction coefficient correlates well with RANS results. This model was shown to be robust and efficient for predicting viscous effects while requiring less computational effort than an arduous 3D meshwork in RANS.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"377 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124707587","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}

{"title":"Insight into Parameters Influencing Wash Displacement Efficiency Through CFD Modeling","authors":"A. Phadke, L. Hovda, P. Gonuguntla","doi":"10.5957/tos-2023-014","DOIUrl":"https://doi.org/10.5957/tos-2023-014","url":null,"abstract":"Jet-type perforate-wash-cement (P/W/C) is a relatively new well plugging technique that is more cost effective than the traditional casing milling method. ConocoPhillips has extensively used this technique in the Greater Ekofisk Area (GEA) over the last 10 years. In this method, Tubing Conveyed Perforating (TCP) guns perforate casing in the target interval before the zone is washed and a cross-sectional cement plug is installed using a specialized Bottom Hole Assembly (BHA). The BHA has nozzles in respective zones to separately spray wash fluid and cement during the operation. Tool translational (up and down movement) and rotational speeds, nozzle diameter, number of nozzles, nozzle angle, mud and cement properties, flow rates and nozzle pressure drop are the key governing parameters. In 2014, ConocoPhillips Norway launched a project to improve quality of wash and cement processes and since 2016 utilized Computational Fluid Dynamics (CFD) for parametric optimization. The analysis significantly enhanced understanding of the fundamental processes involved, enabling improvement of the existing tool and processes. The focus of this paper is on how BHA rotational speed, nozzle diameter, and nozzle angle influence wash process efficiency. Deeper insight from CFD analysis on the influence of these parameters on the wash process is discussed in more detail in this paper. Updated wash and cement procedures and parameter values were introduced in 2017 based on CFD modeling and detailed in a best practice document. To date approximately 200 successful operations have been performed as per the best practice.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125989451","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}

{"title":"Results From The World's Largest Arctic Ships and Advancements of Propulsion Technology","authors":"S. Hanninen, Sampo Viherialehto, T. Heideman, Pirjo Maattanen, Ahmad Arslan","doi":"10.5957/tos-2023-011","DOIUrl":"https://doi.org/10.5957/tos-2023-011","url":null,"abstract":"As a result of multi-year ice, shipping activity in Polar regions is growing. A completely new fleet of double-acting Arctic vessels has been developed and successfully proven their capabilities in the harshest environments. The size of Arctic vessels has also grown since the introduction of 172k Arctic icebreaking LNG carriers. Podded propulsion system is an attractive solution making these innovative ship concepts technically and commercially feasible. This paper will discuss practical experiences from Arctic LNG Carriers.\u0000 ABB Marine & Ports has further developed Azipod® propulsion concepts to meet the demands of even larger icebreaking vessels with high power requirements. This paper aims to present the key design factors when developing propulsion systems for high power icebreaking ships.\u0000 The largest podded drives for high ice class vessels have been up to 17MW. The new propulsion system has been developed to meet the market demand for a power range of up to 20MW. Scaling the range up offers considerable advantages for larger vessels. To mention a few the increased propeller size results in better hydrodynamic efficiency. Opportunities for increasing both the maximum bollard pull thrust and maximum over-torque both is another example. The unit will suit the highest ice class requirements such as IACS PC 1 and PC 2.\u0000 The propulsion system utilizes different operating modes to meet the vessel’s operational needs. In difficult ice conditions the Azipod can be operated in specialized ice mode. This gives a very robust and reliable operation to dynamic load variations caused by ice.\u0000 New technological solutions help ship owners to access opportunities in the Arctic regions by providing safe and reliable operation. The successful operational track record transporting LNG through NSR and Eastern Arctic offers proven propulsion solutions that can be used in Western Arctic energy projects as well. This paper will describe results from the world’s largest icebreaking vessels and the latest developments of the most powerful podded propulsion systems.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115344017","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}

{"title":"High Entropy Alloys as a New Alternative to Corrosion-Resistant Alloys For Marine Applications","authors":"M. Paredes","doi":"10.5957/tos-2023-020","DOIUrl":"https://doi.org/10.5957/tos-2023-020","url":null,"abstract":"A recent paradigm shift in physical metallurgy has enabled the exploration of multi-principal element alloys (MPEAs) or high entropy alloys (HEAs) with as-yet-unknown superior properties which have turned attractive to various engineering applications and industry sectors. In particular, the O&G industry, on daily basis, faces technical challenges to overcome the deleterious effects of corrosion processes affecting critical infrastructure such as pipeline networks, refineries, subsea equipment, etc. The purpose of this work is to briefly review some key aspects of this new type of material as an alternative to the existing conventional alloys widely used by the shipbuilding and energy industries including the O&G sector. The review begins with some generalities about the future tendency of the steel-consuming industry and the growing dependency on metallic alloys despite the rising of emerging technologies in the area of manufacturing and smart materials which seek to be substitute goods. Then, a short summary of corrosion processes and some protection methods used by the industry are discussed. Finally, a succinct comparative analysis between HEAs and conventional steel alloys is carried out by highlighting the pros and cons of these latest technological advances in corrosion-resistant alloy development based on the multi-principal element alloy principle.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133850694","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}