Bubble science engineering and technology最新文献

Towards Automation of the FORM/BCS Method 迈向表单/BCS方法的自动化

Bubble science engineering and technology Pub Date : 2023-11-01 DOI: 10.54327/set2024/v4.i1.86

Hayatou Oumarou, Ibrahim Moussa Mahamat, Moulla Koulla Donatien

{"title":"Towards Automation of the FORM/BCS Method","authors":"Hayatou Oumarou, Ibrahim Moussa Mahamat, Moulla Koulla Donatien","doi":"10.54327/set2024/v4.i1.86","DOIUrl":"https://doi.org/10.54327/set2024/v4.i1.86","url":null,"abstract":"The software industry is facing more complex computer systems, with short development and sustainability issues. To deliver good software with these constraints, software reuse has become a central concept for minimizing design and realization costs. This study improves upon Feature-Oriented Reuse Method with Business Component Semantics (FORM/BCS), a software development method that produces adaptable architectures from reusable domain components. This is a promising method for reusable software assets and model creation. The objective of the FORM/BCS is to bring the industrial production chain to the software. This study proposes a model to automatically transform the FORM/BCS business subsystem component into a process business component. Two metamodels for business subsystems and process business components were developed. In addition, this study establishes correspondences between the source metamodel and target metamodel classes, transformation rules, and the instance of the source metamodel and generates the target metamodel instance. Detailed findings can help practitioners reduce software design costs and development time, and contribute to the advancement of knowledge in software engineering.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"271 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":"135320683","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

Fatigue life prediction of mistuned steam turbine blades subjected to deviations in blade geometry 叶片几何偏差下失谐汽轮机叶片疲劳寿命预测

Bubble science engineering and technology Pub Date : 2023-10-03 DOI: 10.54327/set2023/v3.i2.101

Makgwantsha Mashiachidi, Dawood Desai

{"title":"Fatigue life prediction of mistuned steam turbine blades subjected to deviations in blade geometry","authors":"Makgwantsha Mashiachidi, Dawood Desai","doi":"10.54327/set2023/v3.i2.101","DOIUrl":"https://doi.org/10.54327/set2023/v3.i2.101","url":null,"abstract":"The blades of the steam turbine are subjected to bending of the steam flow, centrifugal loading, vibration response, and structural mistuning. These factors mentioned contribute significantly to the fatigue failure of steam turbine blades. Low pressure (LP) steam turbines experience premature blade and disk failures due to the stress concentrations in the root location of the blade of its bladed disk. This study of mistuned steam turbine blades subjected to variation in blade geometry will be of great significance to the electricity generation industry. A simplified, mistuned, scaled-down steam turbine bladed disk model was developed using ABAQUS finite element analysis (FEA) software. The acquisition of the vibration characteristics and steady-state stress response of the disk models was carried out through FEA. Such studies are very limited. Subsequently, numerical stress distributions were acquired and the model was subsequently exported to Fe-Safe software for fatigue life calculations based on centrifugal and harmonic sinusoidal pressure loading. Vibration characteristics and response of the variation of the geometric blade of the steam turbine were investigated. Natural FEA frequencies compared well with the published literature of real steam turbines, indicating the reliability of the developed FEA model. The study found that fatigue life is most sensitive to changes in blade length, followed by width and then thickness, in this order. Analytical life cycles and Fe-Safe software show a percentage difference of less than 4.86%. This concludes that the numerical methodology developed can be used for real-life mistuned steam turbine blades subjected to variations in blade geometry.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135689779","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

Recycling of Waste Cartons and Musanga cecropioides Heartwood into Composite Panels for Structural Application 回收废纸盒和木参心材制成结构用复合板

Bubble science engineering and technology Pub Date : 2023-09-19 DOI: 10.54327/set2023/v3.i2.89

Grace Peter Umoren, Uduakobong Sunday Okorie, Casmir Chukwuemeka Akaolisa, Emmanuel Bassey Umoren

{"title":"Recycling of Waste Cartons and Musanga cecropioides Heartwood into Composite Panels for Structural Application","authors":"Grace Peter Umoren, Uduakobong Sunday Okorie, Casmir Chukwuemeka Akaolisa, Emmanuel Bassey Umoren","doi":"10.54327/set2023/v3.i2.89","DOIUrl":"https://doi.org/10.54327/set2023/v3.i2.89","url":null,"abstract":"In this research, the suitability of composite panels developed from waste carton paste (WCP) and Musanga cecropioides heartwood particles (MHP) was assessed for structural applications. Proportions of the MHP adopted were 0, 25, 50, 75, and 100 % by weight of the composite mix. For each formulation, three representative samples were fabricated and also subjected to various tests. The results of the tests showed variations in the mean values of water absorption (8.83 – 30.35 %), thickness swelling (3.72 – 10.84 %), bulk density (342.3 – 461.6 kgm-3), thermal conductivity (0.1166 – 0.1717 Wm-1K-1), thermal diffusivity (2.051 – 2.397 x 10-7 m2s-1), and flexural strength (1.388 – 9.636 MPa) as proportion of the MHP decreased from 100 % to 0 %. On the contrary, a positive correlation was observed in the cases of specific heat capacity (1.552 – 1.661 x 103 Jkg-1K-1) and solar radiation absorptivity (12.32 – 13.32 m-1) with respect to increase in the proportions of the MHP used. Though all the samples exhibited better performance tendencies for thermal insulation compared to conventional ceilings or partition elements used in buildings, it was observed that samples developed with more than 50 % of the MHP could not withstand nailability. Above all, waste cartons and Musanga cecropioides heartwood are promising raw materials to be considered for fabrication of low-cost composite thermal insulation panels suitable for application in building designs. This undertaking could also serve as a safe way of managing them as wastes.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135016077","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

Electro-Osmotic Blood Flow of Shear-Thinning Fluid with Hall Current and Wall Flexibility 具有霍尔电流和壁柔韧性的剪切稀释流体的电渗透血流

Bubble science engineering and technology Pub Date : 2023-09-11 DOI: 10.54327/set2023/v3.i2.72

Anum Tanveer, Bushrah Hameed, Tasawar Hayat, Ahmed Alsaedi

引用次数: 0

Architectural Features of the First Period (13th-15th Century) Tekkes in the Balkan 巴尔干地区第一时期(13 -15世纪)的建筑特征

Bubble science engineering and technology Pub Date : 2023-08-22 DOI: 10.54327/set2023/v3.i2.94

Ammar Ibrahimgil

{"title":"Architectural Features of the First Period (13th-15th Century) Tekkes in the Balkan","authors":"Ammar Ibrahimgil","doi":"10.54327/set2023/v3.i2.94","DOIUrl":"https://doi.org/10.54327/set2023/v3.i2.94","url":null,"abstract":"Islamic religion spreading was influenced by the different local traditions among which Sufism, a religious mysticism (tasavvuf) organized under the institutions of tariqa emerged. This was followed by the emergence of as a place where divisions (orders) members were gathered known under names of tekke, zaviye, hankâh, ribat and a dervish lodge. This study elaborates several tekkes established by the Ottomans in the Balkans. Building style of the tekkes varied according to the procedures as well as manners of the order. Tekkes, which have a simple appearance, generally consist of a mosque, semahane, cellar, kitchen, cells, çilehane, selâmlık and harem. However, most of the buildings within the tekke are constructed over a large span of time. The aim of this study is to better understand the spatial setup of this organizational structure, which directly contributed to the conquest in the Balkans through the janissary corps and to the futuwwa (a set of religious and moral vocational norms) through the ahis (religious and moral vocational chamber). For this purpose, the locations of the tekkes and their architectural features, which were established successively one after the other with the conquests, have been analyzed. In final, the architectural typological of the tekkes is obtained according to the belief tradition, positioning, foundation schemes and special plans of the early period structures set within the tekke.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73213248","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

Architectural Features of the First Period (13th-15th Century) Tekkes in the Balkan 巴尔干地区第一时期(13 -15世纪)的建筑特征

Bubble science engineering and technology Pub Date : 2023-08-22 DOI: 10.54327/setjournal2023/v3.i2.94

Ammar Ibrahimgil

{"title":"Architectural Features of the First Period (13th-15th Century) Tekkes in the Balkan","authors":"Ammar Ibrahimgil","doi":"10.54327/setjournal2023/v3.i2.94","DOIUrl":"https://doi.org/10.54327/setjournal2023/v3.i2.94","url":null,"abstract":"Islamic religion spreading was influenced by the different local traditions among which Sufism, a religious mysticism (tasavvuf) organized under the institutions of tariqa emerged. This was followed by the emergence of as a place where divisions (orders) members were gathered known under names of tekke, zaviye, hankâh, ribat and a dervish lodge. This study elaborates several tekkes established by the Ottomans in the Balkans. Building style of the tekkes varied according to the procedures as well as manners of the order. Tekkes, which have a simple appearance, generally consist of a mosque, semahane, cellar, kitchen, cells, çilehane, selâmlık and harem. However, most of the buildings within the tekke are constructed over a large span of time. The aim of this study is to better understand the spatial setup of this organizational structure, which directly contributed to the conquest in the Balkans through the janissary corps and to the futuwwa (a set of religious and moral vocational norms) through the ahis (religious and moral vocational chamber). For this purpose, the locations of the tekkes and their architectural features, which were established successively one after the other with the conquests, have been analyzed. In final, the architectural typological of the tekkes is obtained according to the belief tradition, positioning, foundation schemes and special plans of the early period structures set within the tekke.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135671383","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

Investigating the Influence of Chemical Reaction on MHD-Casson Nanofluid Flow via a Porous Stretching Sheet with Suction/Injection 化学反应对MHD-Casson纳米流体通过多孔拉伸片吸注流动的影响

Bubble science engineering and technology Pub Date : 2023-07-27 DOI: 10.54327/set2023/v3.i2.76

Damala Chenna Kesavaiah, Vellanki Nagaraju, V. B

{"title":"Investigating the Influence of Chemical Reaction on MHD-Casson Nanofluid Flow via a Porous Stretching Sheet with Suction/Injection","authors":"Damala Chenna Kesavaiah, Vellanki Nagaraju, V. B","doi":"10.54327/set2023/v3.i2.76","DOIUrl":"https://doi.org/10.54327/set2023/v3.i2.76","url":null,"abstract":"This study aims to investigate the influence of chemical reaction on the flow characteristics of a magnetohydrodynamic (MHD) Casson nanofluid over a porous stretching sheet with suction/injection. The nanofluid (NF) is comprised of a base fluid with suspended nanoparticles (NPs), and the Casson fluid (CF) model is employed to capture the non-Newtonian behavior. The governing partial differential equations (PDEs) for momentum, energy, and NP concentration are derived, incorporating the effects of magnetic field, viscous dissipation, chemical reaction, and porous medium. The resulting system of nonlinear ordinary differential equations (ODEs) is solved numerically using the Runge-Kutta-Fehlberg method together with the shooting process. The effects of various physical parameters, such as magnetic field strength, porous medium, CF parameters, NP volume fraction, suction/injection parameter, and chemical reaction parameter, on the flow characteristics are examined in detail. The results reveal that faster movement is linked to higher Grashof numbers and porous mediums, but weaker magnetic fields slow it down. The suction/injection affect velocity inversely. The Prandtl and Eckert numbers have opposite effects on temperature fields. The thermophoresis and Brownian motion parameters affect the opposite trends of the concentration and temperature distributions. The concentration reduces with chemical reaction parameters and the Lewis number. Heat transfer (HT) is enhanced for higher Brownian and thermophoresis. The findings of this study can have potential applications in various engineering fields, such as microfluidics, chemical processing, and thermal management systems, where precise control of fluid flow and heat transfer is essential.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87126215","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

Synergistic Photocatalytic Reduction of Hexavalent Chromium Using Graphene Quantum Dots and Formic Acid Optimization and Kinetics 石墨烯量子点与甲酸协同光催化还原六价铬的优化及动力学研究

Bubble science engineering and technology Pub Date : 2023-07-22 DOI: 10.54327/set2023/v3.i2.57

Silmina Silmina, Xi-lin Wu, Christine Rolle, Feng Chen, Hao Wang, Silva Khairunnisa, H. Husin, F. Abnisa

{"title":"Synergistic Photocatalytic Reduction of Hexavalent Chromium Using Graphene Quantum Dots and Formic Acid Optimization and Kinetics","authors":"Silmina Silmina, Xi-lin Wu, Christine Rolle, Feng Chen, Hao Wang, Silva Khairunnisa, H. Husin, F. Abnisa","doi":"10.54327/set2023/v3.i2.57","DOIUrl":"https://doi.org/10.54327/set2023/v3.i2.57","url":null,"abstract":"Graphene Quantum Dots (GQDs) has garnered a significant deal of interest in environmental remediation, particularly for reducing hexavalent chromium [Cr (VI)] to trivalent chromium [Cr (III)]. This study focused on the photocatalytic process of Cr (VI) degradation using GQDs and Formic Acid (FA) under Uv-vis light. Batch experiments were conducted to observe the photocatalytic process of Cr (VI) degradation under Uv-vis light irradiation at varying concentrations of GQDs, FA, and Cr (VI) and different pH levels. The characterization of GQDs includes PL, XPS, XRD, and Raman Spectroscopy. This research revealed that combining GQDs and FA for the photocatalytic process of Cr (VI) reduction is possible. As expected, this system is more effective with lower concentrations of Cr (VI). When FA was introduced, the Cr (VI) degradation efficiency ratio increased. The GQDs/FA/Uv-vis system gave the highest degradation rate at 91.1% within 30 minutes. It was also observed that the optimum pH of the solution was 5.42, where the GQDs were quickly dissoluble. The photocatalytic reduction matched first-order reaction kinetics with a rate constant (k) of 0.1085 min−1 and R2 of 0.985. The primary radical in the degradation of Cr (VI) in the GQDs/FA/Uv-vis system was CO2•−. These findings highlight the potential of GQDs and FA as efficient catalysts for the photocatalytic reduction of Cr (VI) under Uv-vis light.","PeriodicalId":88410,"journal":{"name":"Bubble science engineering and technology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81917961","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

HetroTraffSim: A Novel Traffic Simulation Software for Heterogeneous Traffic Flow HetroTraffSim:一种新型的异构交通流仿真软件

Bubble science engineering and technology Pub Date : 2023-07-20 DOI: 10.54327/set2023/v3.i2.78

A. Zeb, K. Khattak, Muhammad Rehmat Ullah, Z. Khan, T. Gulliver

引用次数: 0

Transient Analysis of Thermal Bending and Vibration of Steam Turbine Rotor 汽轮机转子热弯曲与振动的瞬态分析

Bubble science engineering and technology Pub Date : 2023-07-20 DOI: 10.54327/set2023/v3.i2.91

Nonso Omenife, Dawood Desai, Regan Dunne

引用次数: 0