Journal of Physics: Conference Series最新文献

ZnIn2S4-based heterostructured photocatalysts for CO2 reduction: A mini review 用于还原二氧化碳的基于 ZnIn2S4 的异质结构光催化剂：微型综述

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012012

Yi Feng, Ruitang Guo, Zhongzhu Qiu

引用次数: 0

Optimization design of hydrogen Laval nozzle based on response surface methodology (RSM) 基于响应面法（RSM）的拉瓦尔氢气喷嘴优化设计

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012035

Jianyang Fang, Yusheng Ju, Liwei Mao, Shichao Pei

{"title":"Optimization design of hydrogen Laval nozzle based on response surface methodology (RSM)","authors":"Jianyang Fang, Yusheng Ju, Liwei Mao, Shichao Pei","doi":"10.1088/1742-6596/2838/1/012035","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012035","url":null,"abstract":"To conduct an in-depth study of the injection characteristics of gas fuels, the structural parameters of the nozzle are optimized. Utilizing the Response Surface Method (RSM), this study selects an inlet radius <italic toggle=\"yes\">R1</italic>, outlet radius <italic toggle=\"yes\">R2</italic>, throat straight radius <italic toggle=\"yes\">R0</italic>, expansion half angle <italic toggle=\"yes\">θ</italic>, and contraction half angle <italic toggle=\"yes\">α</italic> as design parameters. Based on the validated numerical model, a response surface prediction model for outlet velocity <italic toggle=\"yes\">v</italic> and mass flow rate <italic toggle=\"yes\">Q</italic> is established. Using the derived expressions, the contribution and interactive effects of design variables on response variables are analyzed. The findings indicate that the outlet radius and throat radius significantly affect the outlet velocity. The outlet radius positively correlates with the outlet velocity, while the throat radius negatively correlates with it. The mass flow rate is most significantly influenced by the throat radius, increasing with its increase. With outlet velocity and mass flow rate as optimization objectives, the MOGA algorithm is applied for multi-objective optimization. The optimization results indicate that the optimized structural parameters increased the centrifugal nozzle’s atomization cone angle and mass flow rate by 1.86% and 27.4%, respectively.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199453","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

Calcium-based nanowires for bone repair 用于骨修复的钙基纳米线

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012009

Yuqi Sun, Yuanbo Wang

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Comparison of thermo-catalytic and photo-assisted thermo-catalytic conversion of glucose to HMF with Cr-MOFs@ZrO2 用 Cr-MOFs@ZrO2 热催化和光助热催化将葡萄糖转化为 HMF 的比较

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012020

Kanglu Chang, Xumei Tao

引用次数: 0

Research on the co-pyrolysis of biomass and coal 生物质和煤的联合热解研究

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012019

Jiaojiao Zhang, Minghang Lv, Fuli Li, Zhe Wang, Xinyu Liu

{"title":"Research on the co-pyrolysis of biomass and coal","authors":"Jiaojiao Zhang, Minghang Lv, Fuli Li, Zhe Wang, Xinyu Liu","doi":"10.1088/1742-6596/2838/1/012019","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012019","url":null,"abstract":"Co-pyrolysis of biomass and coal has attracted much attention as a potential energy conversion technology. In this paper, the significant effects of n-hexane insoluble substance (INS) on tar, water, and coke residue yields were analyzed in depth using statistical analysis. With INS and mixing ratio as independent variables, multivariate analysis of variance (ANOVA) was used to comprehensively investigate the effects of the interaction between the two on the yields of different pyrolysis products, revealing the significant interaction between different pyrolysis products. The genetic algorithm was used to establish an optimization model to optimize the mixing ratios of the co-pyrolysis, and the considerable differences between the experimental and theoretically calculated values of the product yields of the co-pyrolysis compounds were analyzed by statistical tests, and subgroup analyses were carried out to determine the specific differences under different mixing ratios. CNN prediction model was established, and model optimization confirmed the differences between the experimental and theoretically calculated values for different pyrolytic coupling ratio-specific ratios by data validation and subgroup analysis. The further extension and optimization of the model provide a new theoretical basis and idea for further research on the co-pyrolysis of biomass and coal, which can help to improve the energy conversion efficiency and product quality.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199329","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

Phase sequence selection method of double-circuit transmission lines on the same tower based on a comprehensive index 基于综合指数的同塔双回路输电线路相序选择方法

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012039

Xiaoyan Lu, Jianqiao Hu, Zhengwei Peng, Peihua Ma, Kun Zhang, Feng Gao

引用次数: 0

Optimization of Bacillus licheniformis’ nutrient system and oilfield trial for MEOR 地衣芽孢杆菌营养系统优化和油田 MEOR 试验

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012021

Dingyu Kang, Duo Sun, Zixun Yao, Zhongzhi Zhang, Zhiyong Zhang

{"title":"Optimization of Bacillus licheniformis’ nutrient system and oilfield trial for MEOR","authors":"Dingyu Kang, Duo Sun, Zixun Yao, Zhongzhi Zhang, Zhiyong Zhang","doi":"10.1088/1742-6596/2838/1/012021","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012021","url":null,"abstract":"The efficacy of microbial-enhanced oil recovery (MEOR) is contingent upon the performance of oil recovery functional bacteria. The optimization of the nutrient system for oil recovery functional bacteria can enhance their performance. In this study, the nutrient systems of the strains underwent screening and optimization procedures, utilizing single-factor combined with response surface methodology. Subsequently, field trials were conducted to assess the efficacy of MEOR. The results indicated that the carbon source in the nutrient system was sucrose, the nitrogen source was NaNO3, and the phosphorus source was a combination of KH2PO4 and Na2HPO4 (in a 1:1 ratio). The combination of the results from the single-factor experiments and the response surface experiment led to the following formulation for the strain F-T nutrient system (g/L): sucrose 10.0, NaNO3 2.0, KH2PO4 1.5, Na2HPO4 1.5, CaCl2 0.12, FeSO4 0.12, MgSO4·7H2O 0.2, Na2MoO4 0.08, yeast powder 1.0, and pH 7.2-7.5. The optimized F-T bacterium has the potential to spread oil up to a diameter of 40.50 mm. The results of the MEOR field trial indicated a 2.95 × 10 t increase in oil production, with a success rate of 83.87%. Following the implementation of MEOR, production levels were observed to decline to levels comparable to those observed prior to the intervention. This indicates that continued MEOR field applications may be necessary to further enhance crude oil recovery.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199534","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

Research on wind turbine blade coating erosion modeling based on Generic modeling 基于通用建模的风力涡轮机叶片涂层侵蚀建模研究

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012034

Yuantian Xue, Changcheng Song, Chenlai Yang

引用次数: 0

Enhanced heat transfer technology for solar air heaters 太阳能空气加热器的强化传热技术

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012022

Aixin Yang, Chunxia Zhang

引用次数: 0

Finite element analysis of grout-filled GFRP tube repaired corroded tubular offshore platforms 灌浆填充 GFRP 管修复腐蚀管式海上平台的有限元分析

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012017

Yaping Lu, Yongli Zhou, Xiaoyu Yan, Ziyang Meng, Xiaoyu Hou

{"title":"Finite element analysis of grout-filled GFRP tube repaired corroded tubular offshore platforms","authors":"Yaping Lu, Yongli Zhou, Xiaoyu Yan, Ziyang Meng, Xiaoyu Hou","doi":"10.1088/1742-6596/2838/1/012017","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012017","url":null,"abstract":"Steel tubular offshore platforms are exposed to aggressive marine conditions, which leads to inevitable corrosion and degradation of the structures after a long time of service. Repairing the corroded tubular structure is not easy, especially for the members that are beneath the sea level. The current paper aims to provide an alternative approach for the repairing of corroded steel tubular platforms, by which a novel method with grout-filled GFRP tube cladding the tubular members is proposed. The conception design of the method is introduced, and the repairing process is demonstrated in detail. Then the repairing efficiency of repaired joints and platforms with different corrosion rates is investigated with finite element analysis, which proves a satisfactory reinforcement on the strength of them. The enhanced ratio is up to 117% for the T-joint under compression, and 44% for the compression brace of the K-joint, 37% for the tension brace of the K-joint, 45% for the platform. Finite element models are developed to explore the influence of the GFRP tube thickness ratio and the cube strength of grout material on its strength and repair efficiency. Then the corresponding repair structure suggestions under each corrosion rate are put forward.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199340","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