Renwei Liu

Huzhou University

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Frank Liou

Missouri University of Science and Technology

Todd E. Sparks

Product Innovation and Engineering (United States)

Yoshihiro Deguchi

Xi'an Jiaotong University

Yanzhuo Xue

Harbin Engineering University

Shifeng Ding

Jiangsu University of Science and Technology

Junjie Yan

University of Louisville

Li Zhou

China University of Geosciences

Jiping Liu

Xi'an Jiaotong University

Xiaona Li

Jiangnan University

Yufei Wan

Jiangxi Agricultural University

Cooperative Institutions

Chinese Academy of Sciences

Dalian University of Technology

Jiangsu University of Science and Technology

Xi'an Jiaotong University

Harbin Engineering University

University of Science and Technology of China

Jilin University

Shanghai University

University of Chinese Academy of Sciences

Zhejiang University

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Study of Uneven Distribution in Parallel Petroleum Processing Pipes

Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining (2016)

Renwei Liu Haishan Zhu Qingping Li Yufei Wan Kaifeng Fan

The aim of this article is to investigate uneven distribution of oil-gas two phase flow in parallel petroleum processing pipelines. On-site analysis on BZ35-2 central platform A and SZ36-1 central platform N/O (two typical platforms in China’s Bohai Bay) shows that uneven distribution is originated mainly by two sources: flow rate difference and dryness difference. A 3-dimensional numerical model of two-phase flow in T-junction before parallel processing units was built. Flow and dryness distribution under different operating conditions were simulated. It is demonstrated that unevenness of flow rate grows worse as the total flow rate increases or operating pressure difference between parallel units becomes larger. Moreover, unevenness of dryness is mainly caused by phase split in a tee. It can be concluded that the phase split will be more obvious when parallel units are located at different heights or gas volume fraction of feed stream and inlet flow rate is small. Besides, flow rate distribution has an effect on dryness distribution. There is a specific flow ratio that will cause the most serious phase split. Finally, according to the conclusions, modification scheme for BZ35-2 central platform A piping layout was proposed. And this work may provide some guidance for process design and practical operation of parallel units.

Dryness

Multiphase flow

10.1115/ipc2016-64262

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Experimental Study on Localized Skin Effect Current Tracing Technology in Offshore Environment

The 30th International Ocean and Polar Engineering Conference (2020)

Yufei Wan Wenguang Wang Zhaoguang Qu Renwei Liu Xin Qian

Skin effect

Source

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A general finite deformation hypoelastic-plasticity non-ordinary state-based peridynamics model and its applications

Engineering With Computers (2023)

Renwei Liu Yanzhuo Xue Shaofan Li

Peridynamics

Finite strain theory

Hyperelastic material

10.1007/s00366-023-01792-0

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A simple and effective method to predict the generation of black carbon in oilfields

WAN YUFEI DAI GUOHUA LIU CHUNYU Jun Sang Wenguang Wang

10.1115/1.0005217v

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Emission Characteristics of Laser-Induced Plasma Using Collinear Long and Short Dual-Pulse Laser-Induced Breakdown Spectroscopy (LIBS)

Applied Spectroscopy (2017)

Zhenzhen Wang Yoshihiro Deguchi Renwei Liu Akihiro Ikutomo Zhenzhen Zhang

Collinear long and short dual-pulse laser-induced breakdown spectroscopy (DP-LIBS) was employed to clarify the emission characteristics from laser-induced plasma. The plasma was sustained and became stable by the long pulse-width laser with the pulse width of 60 μs under free running (FR) conditions as an external energy source. Comparing the measurement results of stainless steel in air using single-pulse LIBS (SP-LIBS) and DP-LIBS, the emission intensity was markedly enhanced using DP-LIBS. The temperature of plasma induced by DP-LIBS was maintained at a higher temperature under different gate delay time and short pulse-width laser power conditions compared with those measured using short SP-LIBS. Moreover, the variation rates of plasma temperatures measured using DP-LIBS were also lower. The superior detection ability was verified by the measurement of aluminum sample in water. The spectra were clearly detected using DP-LIBS, whereas it cannot be identified using SP-LIBS of short and long pulse widths. The effects of gate delay time and short pulse-width laser power were also discussed. These results demonstrate the feasibility and enhanced detection ability of the proposed collinear long and short DP-LIBS method.

Laser-induced breakdown spectroscopy

10.1177/0003702817693239

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Citations (28)

A simple and effective method to predict the generation of black carbon in oilfields

WAN YUFEI DAI GUOHUA LIU CHUNYU Jun Sang Wenguang Wang

10.1115/1.0000821v

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Resistance Performance of a Ship in Model-Scaled Brash Ice Fields Using CFD and DEM Coupling Model

Frontiers in Energy Research (2022)

Chang Xie Li Zhou Tiecheng Wu Renwei Liu Sijie Zheng

The brash ice channel formed with icebreaker navigation is a normal working scenario for ice-going vessels. Therefore, it is necessary to study brash ice resistance in this condition. In this study, CFD and DEM coupling methods were adopted to investigate the resistance performance of a ship sailing in model-scaled brash ice fields, considering the collision force and friction resistance, among the brash ice, and the water resistance and hydrodynamic force of brash ice, which make up physical scenarios of navigation in the brash ice channel. To study the effect of aforementioned parameters on the average total resistance, the time step, iteration, and brash ice stiffness were analyzed; we found that a time step of 0.02 s, iteration of 10, and brash ice stiffness of 1000 N/m that showed better repeatability of the physical phenomenon, and it was used to reproduce working conditions created in the HSVA ice tank test. The error between the numerical simulation results and the test results is less than 5%, which shows the robustness of the present coupling strategy. Finally, the effects of ship–ice friction coefficient, ice thickness, ice shape, brash ice channel width, and ice concentration on the resistance of the ship were investigated and verified with the published results.

10.3389/fenrg.2022.895948

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Citations (10)

Multifeature-Fitting and Shape-Adaption Algorithm for Component Repair

Journal of Manufacturing Science and Engineering (2017)

Renwei Liu Zhiyuan Wang Frank Liou

In recent years, the usage of additive manufacturing (AM) provides new capabilities for component repair, which includes low heat input, small heat-affected zone, and freeform near-net-shape fabrication. Because the geometry of each worn component is unique, the automated repair process is a challenging and important task. The focus of this paper is to investigate and develop a general best-fit and shape-adaption algorithm for automating alignment and defect reconstruction for component repair. The basic principle of using features for rigid-body best-fitting is analyzed and a multifeature-fitting method is proposed to best fit the 3D mesh model of a worn component and its nominal component. The multifeature-fitting algorithm in this paper couples the least-squares method and a density-based outlier detection method. These two methods run alternately to approach the best-fit result gradually and eliminate the disturbance caused from the defect geometry. The shape-adaption algorithm is used to do cross section comparison and defect reconstruction based on the best-fitted 3D model. A “point-line-surface” fracture surface detection method is proposed to construct fracture surface and the fracture surface boundary is dilated to trim the nominal 3D model to obtain defect geometry. Illustrative examples with typical components and different kinds of defects are used to demonstrate the flexibility and capability of using multifeature-fitting and shape-adaption algorithm developed in this paper.

Component (thermodynamics)

Line (geometry)

10.1115/1.4037107

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Experimental and numerical investigation on self-propulsion performance of polar merchant ship in brash ice channel

Ocean Engineering (2023)

Chang Xie Li Zhou Shifeng Ding Renwei Liu Sijie Zheng

Propulsor

10.1016/j.oceaneng.2022.113424

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Citations (54)