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MHD Nanofluidic Convective Behavior in a Hexagonal-Shaped Thermal System 1

引用

1st International Conference on Fluid, Thermal and Energy Systems, ICFTES 2022

作者： Bamboowala, Husain Tamim Sen, Niloy Nag, Soutrik Manna, Nirmal K. Biswas, Nirmalendu Mandal, Dipak Kumar Department of Mechanical Engineering Jadavpur University Kolkata700032 India Department of Power Engineering Jadavpur University Salt Lake Kolkata700106 India Department of Mechanical Engineering Government Engineering College Samastipur848127 India

ISBN: (数字)9789819959907

ISBN: (纸本)9789819959891

Nanofluidic thermal flow characteristics of magnetohydrodynamic convection in a complex hexagonal cavity-like thermal system are investigated numerically utilizing CuO-water nanofluid. The bottom portion of the complex geometry is partially heated to a uniform temperature Th while the two inclined upper sidewalls of the cavity are kept at a lower temperature Tc. The rest portion of the enclosure is insulated. In order to analyze the heat flow dynamics within the geometry, the finite element method-based solver is utilized to solve the transport equations. The obtained results are illustrated using local as well as global quantities. The study is conducted for the appropriate range of involved parameters, Rayleigh number (103 ≤ Ra ≤ 105), Hartmann number (0 ≤ Ha ≤ 70), and angle of the magnetic field (0 ≤ γ ≤ 70). Furthermore, the heat flow dynamics from the heater to the cooler are scrutinized using the heatlines. The flow structures and temperature characteristics reveal many interesting distribution patterns. Nanofluidic thermal-fluid phenomena are heavily influenced by the Rayleigh and Hartmann number variations with the appearance of multi-vortex flow structures. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Heat transfer

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Experimental Investigation and the CFD Modeling of a Invelox Type Wind Turbine 1

引用

1st International Conference on Fluid, Thermal and Energy Systems, ICFTES 2022

作者： Samanta, Hiranmoy Saha, Debajit Golui, Kamal Dey, Rajesh Department of Mechanical Engineering Gargi Memorial Institute of Technology Kolkata700144 India Department of Mechanical Engineering NIT Sikkim Sikkim737139 India

ISBN: (数字)9789819959907

ISBN: (纸本)9789819959891

The peculiar design confronts the obstacles faced by conventional turbines and removes the barrier of tower-loading turbines. Compared to the standardization of wind energy generation by massive blades attached at the top of the wind tower this model is different by keeping in mind the economic perspective as well as the people and wildlife. The Invelox design perspective captures the wind Omni-directionally and is directed toward the funnel-shaped design leading to the ground level, the impact of the high velocity wind energy generation by striking the blades of the turbine. The objective of this work is to design and modeling of an Invelox turbine and to understand l fluid flow pattern and analysis inside the Invelox where the wind turbines are placed with the standardization. Experimental and Numerical Modeling is done and validated against literature data. Multiple variations are implied to check and optimize the computations and the relation between wind flow direction and inner geometry of the system. The study shows it is possible to orient the flow of wind by capturing, accelerating, and concentrating at a specified optimization level to obtain maximum power output. The results present Invelox as a better way of harnessing wind energy over the other available wind-powered mechanisms used for energy harnessing. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Computational fluid dynamics

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Numerical Analysis on the Effect of Fuel Injection Location on Combustion Characteristics in a Trapped Vortex Combustor 1

引用

1st International Conference on Fluid, Thermal and Energy Systems, ICFTES 2022

作者： Subramanian, S. Chindesh, M. Parammasivam, K.M. Department of Aerospace Engineering Anna University MIT Campus Chennai600044 India

ISBN: (数字)9789819959907

ISBN: (纸本)9789819959891

The present work focuses on the numerical simulations of non-reactive and reactive cases in a trapped vortex combustor. Numerical simulations are carried out in ANSYS FLUENT to analyze the effects of fuel injection locations on mixing and combustion characteristics in a model trapped vortex combustor. Three different combinations of fuel injection viz (i) injection in cavity alone, (ii) injection in both main stream and cavity, and (iii) injection in mainstream alone were analyzed using steady, 2D RANS Non-premixed combustion model for mainstream air velocities of 10 and 30 m/s. From the simulations, it has been observed that fuel injection location plays a vital role in mixing and complete combustion both inside the cavity and mainstream. The species concentration contours for the 3 different cases indicate that fuel injection on top of the cavity enhances combustion and also improves the strength of the locked vortex by helping in shear layer entrainment. Static temperature plots obtained for the different cases show that fuel injection in both cavity and mainstream is the optimum one with minimum partial combustion and highest lean burn rates. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Combustion

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Do We Know How to Use a Fire Extinguisher? Training Unexperienced Citizens with Virtual Reality 1

引用

32nd International conference on The Digital Transformation in the Graphic engineering, INGEGRAF 2023

作者： Cartiel, Antonio Ruiz Asión-Suñer, Laura García-Hernández, César Ubieto-Artur, Pedro Department of Design and Manufacturing Engineering University of Zaragoza Campus Río Ebro C/María de Luna 3 Zaragoza50018 Spain

ISBN: (数字)9783031516238

ISBN: (纸本)9783031516221

Many domestic fires start with small outbreaks that can be controlled with the use of correct extinguishing methods. Portable extinguishers can be found in many residential buildings and public areas, being designed so that any citizen can use them, with a basic level of knowledge. In this study, 25 volunteer participants, from 3 European universities, practiced in virtual reality scenarios, such as a kitchen fire, a train or an industrial area. This made possible to select and use the appropriate extinguishers, in order to improve their safety knowledge and skills. Thanks to this graphical tool, participants could face violent fires with no risks, experimenting the suitability of different extinguishing agents and methods. A questionnaire was answered by participants before and after the practical session, so the acquired knowledge could be compared with the previous one, obtaining positive results. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Fires

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Sustainability Assessment of Hybrid Renewable Energy System: A Case Study from Indian Perspectives 1

引用

1st International Conference on Fluid, Thermal and Energy Systems, ICFTES 2022

作者： Prajapati, Shivam Palchaudhary, Sanket Narvekar, Nishant Acharjee, Ashis Department of Mechanical Engineering National Institute of Technology Agartala India Department of Mechanical Engineering Sardar Vallabhbhai Patel Institute of Technology Surat India Department of Mechanical Engineering PIT Vadodara India

ISBN: (数字)9789819959907

ISBN: (纸本)9789819959891

Hybrid power plants have proven to be a profitable energy system for supplying significant value of electricity or power from generated plants to the electrical system of grids, mainly as renewable energy shares in systems rise from 10 to 20% or more, and the prices of solar photovoltaic instruments, wind energy instruments, and battery storage all keep on falling. The purpose of this investigation is to describe various sustainability tools that may be used to identify renewable energy technologies for distant region power delivery. To comprehend the environmental, economic, and social ramifications of these technologies, various sustainability tools such as the life cycle assessment (LCA) for environment, life cycle costing, along with social assessment approach, and eco-efficiency analysis can be employed. While the different techniques may be useful in their own right, the study's objective and goal will determine their relevance. The eco-efficiency strategy was proven to be supportive in selecting environmentally friendly technologies with the least environmental cost for distant area power supply. All these pieces of work are substantial research endeavors, and more work is required to prioritize them. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Life cycle

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Bibliometric Analysis of Green Manufacturing in Automobile Sector 1

引用

International Conference on Production and Industrial engineering, CPIE 2023

作者： Singh, Surender Mishra, Omprakash Kumar, Krishan Department of Mechanical Engineering J C Bose University of Science and Technology YMCA Faridabad Faridabad121006 India

ISBN: (数字)9789819983438

ISBN: (纸本)9789819983421

Green manufacturing is recent development with an aim to reduce pollution and safeguard the environment. The aim of this chapter is to find out, how green concept in automotive Industries is developing. In this chapter, Scopus data are used for the bibliometric analysis. On searching the database, 244 articles are found using the keyword Green manufacturing and Automobile sector. Keyword and co-occurrence analysis are performed by VOSviewer software for the network visualization. It is found that from 2015 onward, the topic is gaining momentum. Keywords like;automotive industry, green manufacturing and sustainable development have the maximum occurrences, means industries are working on these concepts. Co-occurrence analysis shows that Indian authors are jointly working with other countries authors on green manufacturing. This is very positive trend, as India is developing hub of automobile manufacturing of the world. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Automotive industry

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Development of Circularity Calculators 1

引用

32nd International conference on The Digital Transformation in the Graphic engineering, INGEGRAF 2023

作者： Muneta, M. Luisa Martínez García, Borja Torres Carrasco-Gallego, Ruth Dillón, Marina Arrieta ETS Ingenieros Industriales Universidad Politécnica de Madrid Madrid Spain

ISBN: (数字)9783031516238

ISBN: (纸本)9783031516221

More and more companies see great opportunities in the circular model, as it not only allows them to capture additional value from their products and materials, but also to mitigate risks related to price (permanence and fluctuation) and material supply. These risks are present in all non-circular economy businesses. The circular economy also allows for economic growth without the need for more resources. This is because each unit has a higher value as a result of recycling and reuse of products and materials after use. Metrics that establish the degree of effectiveness of a company in making the transition from "linear" to "circular" are still under development. This article makes proposals for circularity calculators setting out different indicators that can be used by designers or company executives as a decision-making tool, but are also used for many other purposes such as internal reporting, procurement decisions and evaluation/scoring of companies or organisations. In particular, these calculators are oriented towards green purchasing by universities. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Decision making

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Design of a Low-Cost Transtibial Prosthesis for Emergency Situations. The Case of the Doula Leprosarium Digital Fabrication Lab 1

引用

32nd International conference on The Digital Transformation in the Graphic engineering, INGEGRAF 2023

作者： Alonso-García, María Valerga-Puerta, Ana Pilar Barrachina, Luis García Torán, Manuel Martínez University of Cádiz Puerto Real Avenida de La Universidad 10 Cádiz11519 Spain Universitat Politècnica de València Camino de Vera S/N Valencia46022 Spain

ISBN: (数字)9783031516238

ISBN: (纸本)9783031516221

Republic of Cameroon has a large number of amputation patients in need of an economical, functional and durable prosthetic leg. In addition, there is a shortage of health professionals in this area, which makes it difficult to care for these patients. Because of this, the development and implantation of prostheses should be performed by non-specialized personnel. On the other hand, digital manufacturing and Industry 4.0 make it possible to quickly and easily customize medical devices. In particular, 3D scanning and additive manufacturing are two increasingly precise tools that are being used more and more in the healthcare sector. This paper proposes a model and method for designing and manufacturing lower limb prostheses by integrating a digital fabrication laboratory at the Douala leprosarium. This laboratory will be directed by Carmelite Missionaries Sisters. The model presented for this case study involves an improved approach to design and manufacture of customized transtibial prostheses by practitioners without medical or orthopedic experience in other disadvantaged areas. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： 3D printing

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Simultaneous Optimization of Power Consumption and Surface Roughness in Machining Using NSGA-II and Weighted Sum Method 1

引用

International Conference on Production and Industrial engineering, CPIE 2023

作者： Poonia, Vijaypal Kumar, Rishi Choudhary, Deepika Kulshreshta, Rakhee Sangwan, Kuldip Singh Birla Institute of Technology and Science Pilani Pilani Campus Pilani333031 India

ISBN: (数字)9789819983438

ISBN: (纸本)9789819983421

Manufacturing industries face formidable challenges in reducing power consumption and maintaining product quality simultaneously in machining process. This is significant to remain competitive globally, comply with governmental regulations, and deal with rising electricity prices and customer awareness. Multi-objective optimization techniques have become an essential tool to deal with conflicting responses simultaneously. This chapter aims to simultaneously optimize power consumption and surface roughness in turning process. This is achieved by (i) developing statically significant regression models using the backward elimination technique;(ii) generating Pareto solutions using WSM and NSGA-II techniques for rough as well as finish turning operations. Results are compared with existing literature to validate the developed models. The scientific value of the present work lies in proposing a methodology to generate Pareto solutions that depend on the weight assigned to the response functions that would assist a practitioner in better decision-making depending on the managerial requirements. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Multiobjective optimization

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Numerical Investigations of Flow in Cuboidal Liquid Metal Battery 1

引用

9th International and 49th National Conference on Fluid Mechanics and Fluid Power, FMFP 2022

作者： Thakurdesai, Kaustubh Ranjan, Avishek Department of Mechanical Engineering IIT Bombay Mumbai400076 India

ISBN: (数字)9789819963430

ISBN: (纸本)9789819963423

Liquid metal batteries (LMBs) are potentially attractive option for large-scale energy storage devices at grid scale. We present here the results of numerical simulations performed on a cuboidal LMB geometry using OpenFOAM (OF). We have developed a magnetohydrodynamic (MHD)-based multiphase flow solver ‘epotBInterFoam’ which has MHD equations coupled with the volume of fluid (VOF)-based solver in OF. We study the electro-vortex flow (EVF) in the LMB electrode that creates a jet leading to interfacial distortions at the electrode–electrolyte interface of the LMB. Such interface disruptions can create short circuits in practical LMBs. We consider six cases with each case differing in geometry or boundary conditions. We find that the interface becomes more unstable with increasing electric voltage and decreasing width of the negative current collector. A voltage as small as 0.00764 V can lead to short circuit and is sufficient to disrupt the LMB functioning and make it unsafe for use. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Magnetohydrodynamics

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