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Journal of Physics-Photonics最新文献

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The control equipment for the integrated use of cold energy in LNG vessels LNG船冷能综合利用控制设备
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2636/1/012012
Xin Liang, Liyuan Zheng, Xingzhi Lin
{"title":"The control equipment for the integrated use of cold energy in LNG vessels","authors":"Xin Liang, Liyuan Zheng, Xingzhi Lin","doi":"10.1088/1742-6596/2636/1/012012","DOIUrl":"https://doi.org/10.1088/1742-6596/2636/1/012012","url":null,"abstract":"Abstract The design of control equipment for the cold energy recovery and utilization of LNG ships is the focus of ship technology and a prerequisite for equipment manufacture. By analyzing the design background and design status of LNG ship cold energy recycling control equipment, the study forms design ideas and prepares equipment materials. It optimizes design methods and compares and evaluates them with traditional control equipment. After a series of evaluation tests, it is found that the LNG ship cold energy comprehensive utilization control equipment can effectively achieve the purpose of energy saving and emission reduction and solve the problems of high operating costs and environmental pollution of traditional LNG ships.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"25 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763651","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
Mixed Horizontal Well Pattern and Fracturing Parameter Optimization of Low Permeability Reservoir 低渗透油藏混合水平井网布及压裂参数优化
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2636/1/012007
Qi-hao Hu, Fa-jun Guo, Hong-qiang Cao, Xiu-wei Wang, Ya-zhou Wang, Xia Wang, Hong-tao Wang, Jie-feng Cao
{"title":"Mixed Horizontal Well Pattern and Fracturing Parameter Optimization of Low Permeability Reservoir","authors":"Qi-hao Hu, Fa-jun Guo, Hong-qiang Cao, Xiu-wei Wang, Ya-zhou Wang, Xia Wang, Hong-tao Wang, Jie-feng Cao","doi":"10.1088/1742-6596/2636/1/012007","DOIUrl":"https://doi.org/10.1088/1742-6596/2636/1/012007","url":null,"abstract":"Abstract Horizontal well fracturing development is significant in improving the development effect of low permeability reservoirs and is widely applied in many low permeability reservoirs of China. In this study, the reservoir numerical simulation is used to establish different mixed horizontal well networks of the target reservoir. The result shows that the best waterflood development effect is achieved when horizontal segment orientation and crack orientation are at an angle of 45°. The horizontal segment length and fracturing parameters of mixed horizontal well networks are optimized. It is considered that the rational horizontal segment length of the horizontal well is 400 m, the rational number of cracks is 3, and the optimal crack conductivity is between 180-200 mD.m. Through the study of mixed horizontal well network and fracturing parameter optimization, the low permeability reservoir efficient horizontal well fracturing development is well guided.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"23 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763661","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
Numerical analysis of flow and heat transfer characteristics of supercritical endothermic hydrocarbon fuel in taper tube 超临界吸热碳氢燃料在锥形管内流动和传热特性的数值分析
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2633/1/012011
Jiajun Zhao, Hui Gao, Chen Zhang, Dongsheng Wen
{"title":"Numerical analysis of flow and heat transfer characteristics of supercritical endothermic hydrocarbon fuel in taper tube","authors":"Jiajun Zhao, Hui Gao, Chen Zhang, Dongsheng Wen","doi":"10.1088/1742-6596/2633/1/012011","DOIUrl":"https://doi.org/10.1088/1742-6596/2633/1/012011","url":null,"abstract":"Abstract To enhance the cooling performance of the scramjet regenerative cooling system, a novel taper tube is proposed. Under supercritical pressure, the flow characteristics and heat transfer characteristics of endothermic hydrocarbon fuel (EHF) in taper tube, narrow cylindrical tube, and wide cylindrical tube are numerical investigated and compared. The results of the investigation of flow and heat transfer processes in the above three tubes indicate that the taper tube effectively facilitates the pyrolysis of n -decane and the n -decane conversion is increased by 3.94%, compared with narrow cylindrical tube. Compared with wide cylindrical tube, the taper tube enhances cooling effect and the wall temperature near the outlet is reduced by 50.16 K. The taper tube contributes to the cooling structure optimization and promotion of regenerative cooling system performance.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"23 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763664","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
Performance optimization design of wide-body aircraft pressure refueling system 宽体飞机压力加油系统性能优化设计
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2633/1/012002
Hao Gong
{"title":"Performance optimization design of wide-body aircraft pressure refueling system","authors":"Hao Gong","doi":"10.1088/1742-6596/2633/1/012002","DOIUrl":"https://doi.org/10.1088/1742-6596/2633/1/012002","url":null,"abstract":"Abstract In order to reduce the wide body aircraft refueling process time-cost and improve the airport operation efficiency, pressure refueling system design strategy was innovated. The shutoff valves’ operation sequence in refueling process was optimized. The diameter of the orifices on the pressure refueling system fuel line was designed. Pressure refueling performance was simulated and analyzed at different scenarios. The results show that it can improve the pressure refueling system performance at different scenarios by optimizing the pressure refueling process strategy design including optimizing the fuel line orifice design and optimizing the wing tank inner side shut-off valve operation sequence.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"28 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763767","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
Experimental Study on Condensation Heat Transfer Performance of Hydrophilic/Hydrophobic Microstructured 亲/疏水微结构的冷凝换热性能实验研究
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2636/1/012048
Zhiwei He, Enlong Wen, Tao Wang, Chao Huang, Shujie Li, Ruhua Cai
{"title":"Experimental Study on Condensation Heat Transfer Performance of Hydrophilic/Hydrophobic Microstructured","authors":"Zhiwei He, Enlong Wen, Tao Wang, Chao Huang, Shujie Li, Ruhua Cai","doi":"10.1088/1742-6596/2636/1/012048","DOIUrl":"https://doi.org/10.1088/1742-6596/2636/1/012048","url":null,"abstract":"Abstract In order to study the condensation and heat transfer characteristics of similar microstructure surfaces, two similar microstructure surfaces, cylindrical and circular, were fabricated by femtosecond laser technology on a 0.5 mm silicon wafer. The cylindrical surface is superhydrophobic when the contact angle is more than 150°, and the circular surface is hydrophilic when the contact angle is less than 90°. The difference in condensation heat transfer characteristics between superhydrophobic and hydrophilic microstructures was analyzed, and a visual condensation experimental platform was built. Experimental research showed that: At the same flow rate, the heat transfer coefficient of the superhydrophobic surface and the hydrophilic surface decreases significantly with the increase of the surface subcooling degree, but the heat transfer coefficient of the cylindrical surface is still much larger than that of the circular surface. In addition, the heat transfer performance of the hydrophobic microstructure surface is better than that of the hydrophilic surface at medium and high-speed cooling water flow rates. Although the surface microstructures are similar in shape, the heat transfer performance of cylindrical microstructures is much better than that of circular microstructures under the same conditions, and the heat flux of cylindrical microstructures is 2.2 times that of circular microstructures.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"30 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135764053","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
A power constant logic circuit based on mask control 基于掩模控制的功率恒逻辑电路
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2645/1/012010
Haiwei Li, Maoqun Yao, Conghui Li, Shanhu Shen
{"title":"A power constant logic circuit based on mask control","authors":"Haiwei Li, Maoqun Yao, Conghui Li, Shanhu Shen","doi":"10.1088/1742-6596/2645/1/012010","DOIUrl":"https://doi.org/10.1088/1742-6596/2645/1/012010","url":null,"abstract":"Abstract As the structure of existing anti-power attack circuits has certain security problems, this paper proposes a new mask-based control constant power logic circuit based on the existing masking technology. By integrating OR/NOR and AND/NAND circuits into a dual-rail circuit, different circuit logic functions can be controlled by inputting different masks. By introducing two parameters, Normalised Energy Deviation (NED) and Normalised Standard Deviation (NSD), the structure proposed in this paper improves the level of resistance of the circuit to power attacks to a certain extent, as well as reduces the cost of the circuit compared to other power attack resistant circuits.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"86 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716618","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
Fisheries Water Quality Monitoring Improvement System 渔业水质监察改善系统
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2632/1/012016
Junle Jia, Chun Luo, Zhengyi Hou, Qiqi Xia, Xuanhang Ma, Xiang Pan, Awen Ma, Yuru Zheng
{"title":"Fisheries Water Quality Monitoring Improvement System","authors":"Junle Jia, Chun Luo, Zhengyi Hou, Qiqi Xia, Xuanhang Ma, Xiang Pan, Awen Ma, Yuru Zheng","doi":"10.1088/1742-6596/2632/1/012016","DOIUrl":"https://doi.org/10.1088/1742-6596/2632/1/012016","url":null,"abstract":"Abstract In this paper, the system of dynamic identification and monitoring of water bodies and intelligent allocation of pharmaceutical discharge is designed. At present, aquaculture technology in our country is relatively traditional, and the water environment-bearing capacity will often be ignored. This paper aims to realize the efficiency of equipment in the multiple stages of aquaculture through the design system, the remote control of motion software device, and strive to combine intelligent equipment and the basic process of aquaculture, so as to make the aquaculture industry gradually upgrade. Through the test, our device can dynamically identify and detect the water body, and ensure the fishery output and water quality at the same time, bringing economic and environmental benefits to a great extent.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"83 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716627","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
Peer Review Statement 同行评议声明
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2645/1/011002
{"title":"Peer Review Statement","authors":"","doi":"10.1088/1742-6596/2645/1/011002","DOIUrl":"https://doi.org/10.1088/1742-6596/2645/1/011002","url":null,"abstract":"All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Double Anonymous • Conference submission management system: Morressier • Number of submissions received: 36 • Number of submissions sent for review: 36 • Number of submissions accepted: 19 • Acceptance Rate (Submissions Accepted / Submissions Received × 100): 52.8 • Average number of reviews per paper: 2 • Total number of reviewers involved: 10 • Contact person for queries: Name: Fengxin Cen Email: alan.cen@gsrassn.org Affiliation: Global Scientific Research Association","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"80 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716635","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
RGB and LiDAR Fusion-based 3D Semantic Segmentation for Autonomous Driving 基于RGB和LiDAR融合的自动驾驶3D语义分割
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2632/1/012034
Jianguo Liu, Zhiling Jia, Gongbo Li, Fuwu Yan, Youhua Wu, Yunfei Sun
{"title":"RGB and LiDAR Fusion-based 3D Semantic Segmentation for Autonomous Driving","authors":"Jianguo Liu, Zhiling Jia, Gongbo Li, Fuwu Yan, Youhua Wu, Yunfei Sun","doi":"10.1088/1742-6596/2632/1/012034","DOIUrl":"https://doi.org/10.1088/1742-6596/2632/1/012034","url":null,"abstract":"Abstract Projection-based multimodal 3D semantic segmentation methods suffer from information loss during the point cloud projection process. This issue becomes more prominent for small objects. Moreover, the alignment of sparse target features with the corresponding object features in the camera image during the fusion process is inaccurate, leading to low segmentation accuracy for small objects. Therefore, we propose an attention-based multimodal feature alignment and fusion network module. This module aggregates features in spatial directions and generates attention matrices. Through this transformation, the module could capture remote dependencies of features in one spatial direction. This helps our network precisely locate objects and establish relationships between similar features. It enables the adaptive alignment of sparse target features with the corresponding object features in the camera image, resulting in a better fusion of the two modalities. We validate our method on the nuScenes-lidar seg dataset. Our CAFNet achieves an improvement in segmentation accuracy for small objects with fewer points compared to the baseline network, such as bicycles (6% improvement), pedestrians (2.1% improvement), and traffic cones (0.9% improvement).","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"92 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716780","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
Power Equalization Strategy Based on Adaptive Virtual Impedance 基于自适应虚拟阻抗的功率均衡策略
Journal of Physics-Photonics Pub Date : 2023-11-01 DOI: 10.1088/1742-6596/2632/1/012018
Xiong Lv, Baoge Zhang, Hao Tian, Yongquan Ren, Fuhong Cui
{"title":"Power Equalization Strategy Based on Adaptive Virtual Impedance","authors":"Xiong Lv, Baoge Zhang, Hao Tian, Yongquan Ren, Fuhong Cui","doi":"10.1088/1742-6596/2632/1/012018","DOIUrl":"https://doi.org/10.1088/1742-6596/2632/1/012018","url":null,"abstract":"Abstract Due to the differences in the line resistance of each distributed generation unit, conventional sag control does not allow for precise distribution of power, which also reduces the problem of system reactive power accuracy. To address this problem, this paper analyzes the power equalization and distribution conditions. A method for adaptive adjustment of virtual resistance by system output power feedback is submitted. Reducing the variance among the original line resistances aims to solve the problem of power not being evenly divided and improve the equalization of reactive power. By building a Simulink parallel simulation model of the inverter, it is verified that the power feedback-based fetching and the improved droop control is effective.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135716788","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
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