IF 9 1区工程技术

Energy Pub Date : 2024-11-02 DOI: 10.1016/j.energy.2024.133660

Pin Peng , Feifei Liang , Yaping Fu , Yanan Chen , Lin-shu Qiu , Haozhi Qi

{"title":"Unraveling the dynamic nexus: Green cryptocurrencies and their role in sustainable market evolution","authors":"Pin Peng , Feifei Liang , Yaping Fu , Yanan Chen , Lin-shu Qiu , Haozhi Qi","doi":"10.1016/j.energy.2024.133660","DOIUrl":"10.1016/j.energy.2024.133660","url":null,"abstract":"<div><div>This study explores the intricate relationships between green cryptocurrencies, traditional energy, and renewable energy stock markets using an innovative approach that combines time-frequency spillover analysis with cross-quantile dependence methodologies. Our findings show a complicated network of market interactions that change over time and vary widely. In the short term, green cryptocurrencies and new energy equities emerge as pivotal drivers of market dynamics, showcasing their growing influence within traditional energy sectors. This interplay, however, is marked by significant temporal variations, with green cryptocurrencies demonstrating remarkable resilience to external shocks and increasingly becoming transmitters of volatility over time. The cross-quantile dependence analysis further highlights the conditional nature of these interactions, shedding light on the nuanced impact of green cryptocurrencies across different market conditions, particularly during periods of extreme market stress. These insights underscore the transformative role of green financial instruments in the context of the energy transition and sustainable development, offering important implications for investors, policymakers, and the strategic orientation of financial markets toward sustainability.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133660"},"PeriodicalIF":9.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A drift-aware dynamic ensemble model with two-stage member selection for carbon price forecasting 采用两阶段成员选择的漂移感知动态集合模型进行碳价格预测

IF 9 1区工程技术

Energy Pub Date : 2024-11-02 DOI: 10.1016/j.energy.2024.133699

Liling Zeng , Huanling Hu , Qingkui Song , Boting Zhang , Ruibin Lin , Dabin Zhang

{"title":"A drift-aware dynamic ensemble model with two-stage member selection for carbon price forecasting","authors":"Liling Zeng , Huanling Hu , Qingkui Song , Boting Zhang , Ruibin Lin , Dabin Zhang","doi":"10.1016/j.energy.2024.133699","DOIUrl":"10.1016/j.energy.2024.133699","url":null,"abstract":"<div><div>Forecasting carbon prices is a pivotal topic in achieving the targets of carbon neutrality and carbon peaking. However, the complex and time-evolving characteristics inherent in carbon price series render precise forecasting a formidable undertaking. Numerous studies have demonstrated that distinct prediction models exhibit varying capabilities and performances, and ensemble learning offers an efficacious approach to enhance forecasting performance. To address variations in model performance and data distribution, a drift-aware ensemble learning framework is employed to adaptively select and combine models for carbon prices forecasting. First, thirty candidate models are generated by integrating data processing techniques with multiple forecast models to comprehensively capture sample information. Second, an initial selection process of candidate models is dynamically executed utilizing a performance drift detection mechanism. Following each drift detection, a second-stage selection is performed given the significance of diversity in ensemble models. Finally, final predictions are calculated by combining the outputs of selected models via a sliding-window weighted average. Carbon price data from four distinct trading markets in China are employed to validate the efficacy of the drift-aware dynamic ensemble (DDE) framework. The results substantiate that DDE can be a convincing tool for the operation and management of carbon trading markets.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133699"},"PeriodicalIF":9.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive enhancement of melting-solidifying process in latent heat storage based on eccentric fin-foam combination 基于偏心翅片-泡沫组合的潜热蓄能熔化-凝固过程综合强化技术

IF 9 1区工程技术

Energy Pub Date : 2024-11-02 DOI: 10.1016/j.energy.2024.133693

Kuo Zeng , Junjie Gao , Yongwen Lu , Hongyang Zuo , Bowen Chi , Zheyu Fang , Jun Li , Huaqian Xu , Beiyang Li , Haiping Yang , Hanping Chen

{"title":"Comprehensive enhancement of melting-solidifying process in latent heat storage based on eccentric fin-foam combination","authors":"Kuo Zeng , Junjie Gao , Yongwen Lu , Hongyang Zuo , Bowen Chi , Zheyu Fang , Jun Li , Huaqian Xu , Beiyang Li , Haiping Yang , Hanping Chen","doi":"10.1016/j.energy.2024.133693","DOIUrl":"10.1016/j.energy.2024.133693","url":null,"abstract":"<div><div>A novel fin-foam combination, applying upward fins to accelerate natural convection and downward foams to dominate thermal conduction, was established to comprehensively enhance the melting and solidifying performance of horizontal shell-and-tube latent heat storage devices. Enhancement mechanisms of the current design were numerically investigated and compared with the typical eccentric and concentric design the whole melting-solidifying process. Among investigated enhancement designs, the fin-foam combination achieved the best results, reducing the melting time and the solidifying time by 47.9 % and 55.4 % respectively. Meanwhile, the relative difference between the melting and solidifying time was reduced to 12 %, indicating a significant mitigation of the buckets effect of solidifying caused by eccentric designs. Further, the effect of the total enhancement material usage was investigated. Results showed that the marginal effect of the heat transfer enhancement started at 9 fins and 0.91 porosity, but the relative difference between melting and solidifying time then dropped below 0.61 %. The economic assessment showed that increasing the amount of enhancement material can significantly improve the storage capacity per unit cost when the price ratio of the enhancement material to PCM is less than 10, indicating a considerable applicability and cost performance of fin-foam combination under different power density demands.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133693"},"PeriodicalIF":9.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance evaluation and multi-objective optimization of hydrogen-based integrated energy systems driven by renewable energy sources 可再生能源驱动的氢基综合能源系统的性能评估和多目标优化

IF 9 1区工程技术

Energy Pub Date : 2024-11-02 DOI: 10.1016/j.energy.2024.133698

Fanhua Rong , Zeting Yu , Kaifan Zhang , Jingyi Sun , Daohan Wang

{"title":"Performance evaluation and multi-objective optimization of hydrogen-based integrated energy systems driven by renewable energy sources","authors":"Fanhua Rong , Zeting Yu , Kaifan Zhang , Jingyi Sun , Daohan Wang","doi":"10.1016/j.energy.2024.133698","DOIUrl":"10.1016/j.energy.2024.133698","url":null,"abstract":"<div><div>This study proposes an integrated energy system using hydrogen storage to realize the efficient utilization of renewable energy sources and reduce the fluctuation when renewable energy is connected to grid. The system utilizes solar and wind energy to realize hydrogen production, desalination, and CCHP. First, the energy, exergy, and economic evaluations for the proposed system are carried out, and then an in-depth analysis of the key operating parameters is performed. The system achieves energy efficiency, exergy efficiency, and cost rate of 48.49 %, 19.98 %, and 7.969 $/h, respectively. And the exergy analysis shows that the main exergy destructions are caused by the parabolic trough solar collector and the transcritical CO<sub>2</sub> power cycle. The parametric analysis demonstrates when solar radiation flux and wind speed increase, the exergy efficiency and hydrogen production are increased, but the cost rate is increased accordingly. Finally, two sets of multi-objective optimization schemes are performed combining the artificial neural network with the Non-dominant genetic algorithm-II. For the optimized fresh water output, cost rate, and exergy efficiency, it is achieving improvements of 51.73 %, 8.4 %, and 3.6 %, and for the optimized hydrogen production, cost rate, and exergy efficiency, it is increased by 12.53 %, 0.564 %, and 0.75 %, respectively.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133698"},"PeriodicalIF":9.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-loop segmented piston trajectory control of free piston linear generator based on sliding mode control 基于滑模控制的自由活塞式线性发生器双回路分段活塞轨迹控制

IF 9 1区工程技术

Energy Pub Date : 2024-11-01 DOI: 10.1016/j.energy.2024.133684

Yingdong Cheng , Jiaqi Li , Jin Xiao , Chen Zhang , Lei Zhu , Zhen Huang

{"title":"Dual-loop segmented piston trajectory control of free piston linear generator based on sliding mode control","authors":"Yingdong Cheng , Jiaqi Li , Jin Xiao , Chen Zhang , Lei Zhu , Zhen Huang","doi":"10.1016/j.energy.2024.133684","DOIUrl":"10.1016/j.energy.2024.133684","url":null,"abstract":"<div><div>Free piston linear generator (FPLG) can be applied as range extender for electrical vehicles to reduce greenhouse gas emissions attributed to its fuel flexibility and ultimate freedom of piston motion. However, FPLG still faces several challenges in control such as misfire and collision due to the eliminate of mechanical crankshaft. To fully utilize the potential of the ultimate freedom of piston motion, this paper presents a novel piston trajectory control strategy which employs the piston trajectory on the entire operation process of FPLG as the control objective. Considering disturbances and high coupling of FPLG, a sliding mode controller is employed to track reference piston trajectory. Additionally, a segmented control strategy is implemented to decouple the control of combustion pressure force and electromagnetic force. In order to ascertain the effectiveness of the proposed controller, a prototype of single-piston FPLG and a corresponding numerical model are constructed. The experimental and simulation results demonstrate the proposed controller shows fast response, precise tracking performance, and good robustness at various reference piston trajectories. Furthermore, the experimental results illustrate that the system can achieve cold start through the seamless transition between operation states and long-term stable operation by the controller.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133684"},"PeriodicalIF":9.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical investigation on the effect of ignition timing on a low-temperature hydrogen-fueled Wankel rotary engine with passive pre-chamber ignition 关于点火正时对采用被动式前腔点火的低温氢燃料万克尔旋转发动机的影响的数值研究

IF 9 1区工程技术

Energy Pub Date : 2024-11-01 DOI: 10.1016/j.energy.2024.133686

Changwei Ji, Hanlin Li, Jinxin Yang, Hao Meng

{"title":"Numerical investigation on the effect of ignition timing on a low-temperature hydrogen-fueled Wankel rotary engine with passive pre-chamber ignition","authors":"Changwei Ji, Hanlin Li, Jinxin Yang, Hao Meng","doi":"10.1016/j.energy.2024.133686","DOIUrl":"10.1016/j.energy.2024.133686","url":null,"abstract":"<div><div>Adopting the low-temperature hydrogen evaporated from the liquid hydrogen is capable of improving volumetric efficiency for the Wankel rotary engine (WRE). Considering the difficulty in ignition and slow flame propagation of low-temperature hydrogen-air mixtures, the passive pre-chamber is used to improve ignition and combustion. A three-dimensional computational fluid dynamics model for a turbulent jet ignition (TJI) WRE fueled by low-temperature hydrogen was established. The effects of low temperature and TJI on the in-cylinder flow field, combustion, emissions and leakage in the TJI-WRE fueled by low-temperature hydrogen were studied under different ignition timings. The results indicated that low-temperature tends to suppress the flame propagation, whereas TJI can accelerate the flame speed and promote flame propagation to the unburned zone in the combustion chamber. Combining low-temperature hydrogen with the passive pre-chamber can achieve high engine thermal efficiency and power while significantly reducing leakage. With the ignition timing set at 18 °CA before the top dead center, the indicated thermal efficiency reached 39.49 % and the indicated mean effective pressure peaked at 0.77 MPa. Compared to the original engine, fresh mixture leakage through spark plug cavities and adjacent chambers was reduced by 72.13 % and 78.79 %, respectively.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133686"},"PeriodicalIF":9.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data envelopment analysis and multi-objective genetic algorithm based optimization of energy consumption and greenhouse gas emissions in rice-wheat system 基于数据包络分析和多目标遗传算法的稻麦系统能耗和温室气体排放优化研究

IF 9 1区工程技术

Energy Pub Date : 2024-11-01 DOI: 10.1016/j.energy.2024.133680

Naman Kumar , Snehasish Bhunia , Prithwiraj Dey

{"title":"Data envelopment analysis and multi-objective genetic algorithm based optimization of energy consumption and greenhouse gas emissions in rice-wheat system","authors":"Naman Kumar , Snehasish Bhunia , Prithwiraj Dey","doi":"10.1016/j.energy.2024.133680","DOIUrl":"10.1016/j.energy.2024.133680","url":null,"abstract":"<div><div>This study seeks to optimize energy use and reduce greenhouse gas emissions in rice-wheat cropping systems across Chhattisgarh, Bihar, and Punjab, India, using Data Envelopment Analysis and a multi-objective genetic algorithm. Energy inputs, including labour, machinery, diesel, fertilizers, herbicides, pesticides, fungicides, and irrigation, were evaluated across 65 farms. The average energy input was 39,706 ± 4877 MJ ha⁻<sup>1</sup>, while the average output was 140,961 MJ ha⁻<sup>1</sup>. The highest energy expenditures were attributed to nitrogen (15,995 ± 2973 MJ ha⁻<sup>1</sup>), diesel (5978 ± 358 MJ ha⁻<sup>1</sup>), and machinery (4438 ± 141 MJ ha⁻<sup>1</sup>). Data envelopment analysis results indicated that 26.15 % of farms operated at technical efficiency, with an average technical efficiency score of 0.833 and scale efficiency of 0.838. The Banker, Charnes, and Cooper model suggested an optimal energy input of 24,635 MJ ha⁻<sup>1</sup>. multi-objective genetic algorithm further optimized energy use, achieving a reduction of 13,440 MJ ha<sup>−1</sup> compared to data envelopment analysis results alone. Conventional farming systems emitted 67,410 kg CO<sub>2</sub>-eq ha⁻<sup>1</sup>, while optimized farms achieved a reduction of 34 kg CO<sub>2</sub>-eq ha⁻<sup>1</sup>. These findings highlight the potential for substantial energy savings and greenhouse gas reductions through optimized input management, promoting more sustainable agricultural practices by minimizing reliance on chemical fertilizers, diesel, and machinery in rice-wheat systems.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133680"},"PeriodicalIF":9.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extreme weather impact on carbon-neutral power system operation schemes: A case study of 2060 Sichuan Province 极端天气对碳中和电力系统运行方案的影响：四川省 2060 年案例研究

IF 9 1区工程技术

Energy Pub Date : 2024-11-01 DOI: 10.1016/j.energy.2024.133677

Weiqi Li , Weijia Yang , Fan Zhang , Shuang Wu , Zheng Li

{"title":"Extreme weather impact on carbon-neutral power system operation schemes: A case study of 2060 Sichuan Province","authors":"Weiqi Li , Weijia Yang , Fan Zhang , Shuang Wu , Zheng Li","doi":"10.1016/j.energy.2024.133677","DOIUrl":"10.1016/j.energy.2024.133677","url":null,"abstract":"<div><div>The impact of increasingly frequent and intense climate change events on power supply and consumption has become a concern for many countries. This study evaluated the impact of extreme weather on the power system economy and security by conducting an empirical case study of the Sichuan power network to address uncertainty attributed to different extreme weather events under carbon neutrality scenarios. First, our paper proposed a CNPSSO model of four seasonal typical days by jointly considering the regional hourly disparities of load curves and renewable power output curves. Then, the model creatively introduced the effects of extreme weather on the power supply and demand curves based on various scenario analyses. The most cost-effective output strategy using various generation technologies was provided based on optimization models. Finally, Sichuan Province, a hydropower-dominated province was selected as an empirical case study. The results indicate that extreme weather significantly affects the hourly operational and dispatching schemes of Sichuan's power system. Compared to the \"Normal weather scenario”, hydropower's share plummets from 83.3 % to 46.1 %, while pumped storage surges 7.1 billion kWh in summer in extremely hot and dry weather. Imported electricity rises by 24.4 %, 30.5 % and 24.8 % in dry scenario, extremely hot and dry scenario, and extremely cold scenario, respectively. Furthermore, extreme weather increases carbon emissions (mainly from thermal power and imported electricity) and costs. Specifically, when juxtaposed against normal weather, extreme drought, extreme heat drought and extremely cold lead to respective increases in carbon emissions by 32.9 %, 33.5 %, and 12.3 %. Regarding the levelized cost of electricity (LCOE), \"Extremely dry scenario”, \"Extremely hot and dry scenario”, and \"Extremely cold scenario” drive up the LCOE by 7.2 %, 9.2 %, and 4.2 %, respectively.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133677"},"PeriodicalIF":9.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Orthogonal experimental investigation on permeability evolution of unconsolidated sandstones during geothermal fluid reinjection: A case study in the Minghuazhen Formation, Tianjin, China 地热流体回注过程中未固结砂岩渗透率演化的正交实验研究：中国天津明化镇地层案例研究

IF 9 1区工程技术

Energy Pub Date : 2024-10-31 DOI: 10.1016/j.energy.2024.133626

Peng Xiao , Hong Tian , Bin Dou , Jun Zheng , Jian Shen , Bao Lu , Alessandro Romagnoli , Lizhong Yang

{"title":"Orthogonal experimental investigation on permeability evolution of unconsolidated sandstones during geothermal fluid reinjection: A case study in the Minghuazhen Formation, Tianjin, China","authors":"Peng Xiao , Hong Tian , Bin Dou , Jun Zheng , Jian Shen , Bao Lu , Alessandro Romagnoli , Lizhong Yang","doi":"10.1016/j.energy.2024.133626","DOIUrl":"10.1016/j.energy.2024.133626","url":null,"abstract":"<div><div>Geothermal fluid reinjection (GFR) is vital for sustainable sandstone hydrothermal geothermal resource extraction. However, the permeability damage mechanisms of sandstone geothermal reservoirs due to reinjection remain unclear. This study aimed to investigate the permeability evolution of unconsolidated sandstone during GFR through an orthogonal experiment. The influence mechanism of the factors, including temperature, injection rate, confining pressure, geothermal fluid concentration (GFC), and depth, on sandstone permeability is also discussed. The results showed the sandstone samples suffered permeability damage in 34.62–72.73 %. Particle clogging emerged as the primary mechanism responsible for the permeability damage, serving as a crucial bridge in understanding the influences of the factors on sandstone permeability. Efficient GFR requires the optimization of reinjection conditions tailored to the characteristics of geothermal reservoirs. Sensitivity analysis showed that the order-sensitive characteristic of permeability damage to the factors was injection rate > GFC > temperature > depth > confining pressure. Through the optimization of reinjection parameters, the heat exploitation performance under the worst permeability damage case can be improved by 1.77–1.93 times. This study could offer valuable insights into the challenges and considerations associated with GFR in sandstone reservoirs.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133626"},"PeriodicalIF":9.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

0D-1D coupled method for performance design and analysis of adaptive cycle engine - Modeling, simulation and validation 自适应循环发动机性能设计和分析的 0D-1D 耦合方法 - 建模、模拟和验证

IF 9 1区工程技术

Energy Pub Date : 2024-10-30 DOI: 10.1016/j.energy.2024.133666

Wangzhi Zou , Xinqian Zheng , Weitao Liu , Jun Lai , Baotong Wang

{"title":"0D-1D coupled method for performance design and analysis of adaptive cycle engine - Modeling, simulation and validation","authors":"Wangzhi Zou , Xinqian Zheng , Weitao Liu , Jun Lai , Baotong Wang","doi":"10.1016/j.energy.2024.133666","DOIUrl":"10.1016/j.energy.2024.133666","url":null,"abstract":"<div><div>Adaptive cycle engine (ACE) can efficiently operate in different modes to fulfill complex mission requirements, which features better mission adaptability than the conventional engine, but also brings great challenges to the performance design and analysis. To deal with the low accuracy of the traditional zero-dimensional (0D) method in predicting the ACE performance under variable geometry and off-design conditions, a zero-dimensional and one-dimensional (0D-1D) coupled simulation method is proposed and validated in this paper. The physics-based 1D mean-line models for the adaptive fan and variable geometry turbine are established, and then coupled with the 0D engine model by iteratively coupled method. Besides, an adaptive selection strategy on the coupling parameters is proposed to improve the convergence issue related to the usage of generic performance maps and accelerate the convergence. Different coupled methods are also compared regarding engine performance, component characteristics and computing time. The 0D-1D coupled method provides a more physical, more accurate and efficient solution for reasonably considering the effects of the design parameters and variable geometry parameters on the ACE performance. The maximum computing time for a single operating point is less than 2 min, which is significant for the quick iteration in the stage of ACE conceptual and preliminary design.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133666"},"PeriodicalIF":9.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","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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