The Experts below are selected from a list of 499074 Experts worldwide ranked by ideXlab platform
Jijun Gu - One of the best experts on this subject based on the ideXlab platform.
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analytical model for Transfer Process of deepwater steel lazy wave riser on elastic seabed
Journal of Marine Science and Technology, 2019Co-Authors: Yi Wang, Menglan Duan, Jijun GuAbstract:The steel lazy-wave riser (SLWR) is considered as an appropriate approach for deepwater riser installation due to its advantages in service performance. However, the introduction of buoyancy modules system brings about the great nonlinearity of lazy wave configuration in installation, especially during Transfer Process. This paper presents a comprehensive analytical model to analyze the behavior of SLWR during Transfer Process which is of great importance to the installation feasibility and analysis. Taking the elastic seabed and boundary-layer phenomenon into consideration, this analytical model is able to deal with the three different stages of the actual Transfer Process. The reliability of the proposed analytical model is verified and a typical SLWR Transfer Process analysis is conducted to investigate the riser configurations and some important mechanical parameters which exert influences on the riser’s performance. The proposed method provides a practical reference for the design and analysis of actual SLWR installation.
Yi Wang - One of the best experts on this subject based on the ideXlab platform.
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analytical model for Transfer Process of deepwater steel lazy wave riser on elastic seabed
Journal of Marine Science and Technology, 2019Co-Authors: Yi Wang, Menglan Duan, Jijun GuAbstract:The steel lazy-wave riser (SLWR) is considered as an appropriate approach for deepwater riser installation due to its advantages in service performance. However, the introduction of buoyancy modules system brings about the great nonlinearity of lazy wave configuration in installation, especially during Transfer Process. This paper presents a comprehensive analytical model to analyze the behavior of SLWR during Transfer Process which is of great importance to the installation feasibility and analysis. Taking the elastic seabed and boundary-layer phenomenon into consideration, this analytical model is able to deal with the three different stages of the actual Transfer Process. The reliability of the proposed analytical model is verified and a typical SLWR Transfer Process analysis is conducted to investigate the riser configurations and some important mechanical parameters which exert influences on the riser’s performance. The proposed method provides a practical reference for the design and analysis of actual SLWR installation.
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a nonlinear mechanical model for deepwater steel lazy wave riser Transfer Process during installation
Applied Ocean Research, 2015Co-Authors: Jinlong Wang, Menglan Duan, Yi Wang, Xinzhong LiAbstract:Abstract To meet the increasing applications of the deepwater steel lazy-wave riser (SLWR), its installation is a great challenge for SLWR which affects its service performance. This paper is focused on the Transfer Process during the SLWR installation which is of great importance to the installation feasibility and analysis. A comprehensive mechanical model based on the nonlinear large deflection beam theory for the deepwater SLWR Transfer Process is developed. The presented model is able to deal with three different stages analysis of the Transfer Process and the length and tension of the two cables used to lift the riser's pull-head: A&R cables of installation vessel and pull-in cable of production platform. Numerical analysis is conducted to investigate the riser configurations and some important mechanical parameters which exert influences on the riser's performance. The proposed model can be a basic reference to the design and dynamic analysis of deepwater SLWR installation.
Menglan Duan - One of the best experts on this subject based on the ideXlab platform.
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analytical model for Transfer Process of deepwater steel lazy wave riser on elastic seabed
Journal of Marine Science and Technology, 2019Co-Authors: Yi Wang, Menglan Duan, Jijun GuAbstract:The steel lazy-wave riser (SLWR) is considered as an appropriate approach for deepwater riser installation due to its advantages in service performance. However, the introduction of buoyancy modules system brings about the great nonlinearity of lazy wave configuration in installation, especially during Transfer Process. This paper presents a comprehensive analytical model to analyze the behavior of SLWR during Transfer Process which is of great importance to the installation feasibility and analysis. Taking the elastic seabed and boundary-layer phenomenon into consideration, this analytical model is able to deal with the three different stages of the actual Transfer Process. The reliability of the proposed analytical model is verified and a typical SLWR Transfer Process analysis is conducted to investigate the riser configurations and some important mechanical parameters which exert influences on the riser’s performance. The proposed method provides a practical reference for the design and analysis of actual SLWR installation.
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a nonlinear mechanical model for deepwater steel lazy wave riser Transfer Process during installation
Applied Ocean Research, 2015Co-Authors: Jinlong Wang, Menglan Duan, Yi Wang, Xinzhong LiAbstract:Abstract To meet the increasing applications of the deepwater steel lazy-wave riser (SLWR), its installation is a great challenge for SLWR which affects its service performance. This paper is focused on the Transfer Process during the SLWR installation which is of great importance to the installation feasibility and analysis. A comprehensive mechanical model based on the nonlinear large deflection beam theory for the deepwater SLWR Transfer Process is developed. The presented model is able to deal with three different stages analysis of the Transfer Process and the length and tension of the two cables used to lift the riser's pull-head: A&R cables of installation vessel and pull-in cable of production platform. Numerical analysis is conducted to investigate the riser configurations and some important mechanical parameters which exert influences on the riser's performance. The proposed model can be a basic reference to the design and dynamic analysis of deepwater SLWR installation.
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a mechanical model for deepwater steel catenary riser Transfer Process during installation
Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment, 2013Co-Authors: Menglan Duan, Jinghao Chen, Kai Tian, Jian ZhangAbstract:Steel catenary risers are widely used in the development of marine oil and gas. Deepwater installation is an important procedure that will affect the service life of steel catenary risers. A comprehensive study of a mechanical model for the deepwater steel catenary riser Transfer Process during installation is performed in this paper. This model is derived on the basis of large deformation beam theory, the catenary method and the Winkler foundation model. Numerical analysis is also undertaken to investigate the factors influencing the Transfer Process of deepwater steel catenary risers during installation. The model presented is able to complete the Transfer Process through controlling the length of the cables from the installation vessel and the platform. The procedure can be applied to the design of deepwater steel catenary riser installations.
Peng He - One of the best experts on this subject based on the ideXlab platform.
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the cmt short circuiting metal Transfer Process and its use in thin aluminium sheets welding
Materials & Design, 2009Co-Authors: Jicai Feng, Hongtao Zhang, Peng HeAbstract:Cold metal Transfer (CMT) is a modified metal inert gas welding Process based on short-circuiting Transfer Process, characterised by low heat input and no-spatter welding. The wave control characteristics and its droplet Transfer Process were analyzed by sensing and image method. The results show that it can realize no-spatter welding and low heat input during welding Process. When welding thin sheets, it can obtain small deformation weldment. The low heat input also promotes the gap bridging ability.
Junhong Hao - One of the best experts on this subject based on the ideXlab platform.
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integrated dispatch model for combined heat and power plant with phase change thermal energy storage considering heat Transfer Process
IEEE Transactions on Sustainable Energy, 2018Co-Authors: Yuanhang Dai, Lei Chen, Yong Min, Qun Chen, Pierluigi Mancarella, Junhong HaoAbstract:Combined heat and power (CHP), with its limited flexibility, is one of the leading causes for the curtailment problem of variable renewable energy source (VRES) in Northern China. To increase the flexibility for CHP, thermal energy storage (TES) is considered to be an effective solution, and a phase-change TES demonstration pilot project is now being constructed in Northern China. Almost all the previous studies have modeled the TES device without considering the heat Transfer Process, which is a main constraint in thermal system analysis. Thus, in this contribution, we consider the heat Transfer Process for the phase-change TES device installed in a CHP plant based on the steam's three-stage heat Transfer model and the entransy dissipation-based thermal resistance theory. An integrated electrical–thermal dispatch model concerning conventional thermal units, VRESs, and CHP units with phase-change TES device is given, and an iteration method for solving this nonlinear programming problem is proposed. Case studies show that it is vital to consider the heat Transfer Process in the modeling of CHP plant with phase-change TES device, and it has significant influence on the flexibility that the TES device can provide when the working conditions vary.
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dispatch model of combined heat and power plant considering heat Transfer Process
IEEE Transactions on Sustainable Energy, 2017Co-Authors: Yuanhang Dai, Lei Chen, Yong Min, Qun Chen, Junhong Hao, Yiwei ZhangAbstract:Due to the coupling of its heat and power output, combined heat and power (CHP) has limited flexibility, which is one of the main reasons for variable renewable energy source (RES) curtailment problem in Northern China. Almost all the existing studies have modelled the CHP's output characteristics as a feasible operation region of electric power and heat power. However, only the extraction steam of a CHP unit that used for district heating can be controlled directly, without considering the extraction steam's heat Transfer Process, the actual heat power output cannot be precisely decided. Thus this paper proposes a detailed CHP dispatch model based on the principles of heat Transfer. A three-stage heat Transfer model of the extraction steam is used to describe the heating Process. Then, a joint dispatch model concerning CHP units, conventional thermal power units, and RESs is given. Finally, the impacts of different factors on the extraction steam's heat Transfer Process and its influence for RES accommodation are analyzed. Results show that considering heat Transfer Process is essential in modelling the CHP plant that used for district heating, especially when the CHP plant is working at a status that deviates from the rated one significantly.
