bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of HTF flow direction, mass flow rate and fins on melting and solidification in a latent-heat-based thermal energy storage device
Authors: Akarsh A , Dirbude Sumer 
Published: October 2021

Abstract
Latent-heat-based thermal energy systems (LHTES) have commonly been used as a potential energy storage mode over any other mode of thermal energy storage. Many heat transfer enhancement techniques have been proposed over the past years. These techniques reduce the melting and solidification times. Most of these techniques focus on the phase change material (PCM). However, the flow direction of the heat transfer fluid (HTF) can affect the heat transfer performance and pumping power requirement of the system. In this paper, the effect of HTF-flow direction, HTF mass flow rate and addition of the fins on the melting and solidification of the PCM in a shell-and-tube type of energy storage is numerically studied. Two-dimensional transient simulations are performed with ANSYS-Fluent where the phase-change process is modelled using the enthalpy-porosity formulation. The model is verified and validated by comparing with the available experimental data. A reasonable match is observed. The validated model, is used to study the effects of various parameters, such as, mass flow rate of the HTF, and triangular fin (at a fixed fin pitch) for both charging and discharging of the PCM. Finally, an influence of flow direction on the melting and solidification time has been studied. It is found that the contribution of HTF mass flow rate, the addition of the fin and HTF flow directions respectively is 1.3-3.01%, 16.97-17.62%, and 1.3-1.77% of overall heat transfer performance. A major contribution to the enhancement of overall heat transfer of the system is from the addition of fins.
Effects of biodiesel-pentanol-diesel blends with varied EGR in a CRDI engine
Authors: Praveena V , Akshaykumar U , Nishad T 
Published: October 2021

Abstract
Emission standards are getting stricter day by day, due to the rise in the growth of automobiles globally. When compared to other IC engines, Diesel engines cause more harmful exhaust gas and this has led to potentially catastrophic impact on the environment like global warming and ozone layer depletion. To overcome this problem, we need renewable sources but since it is currently in high demand, this has led to the development of alternative fuels in India. This study investigates the impact of n-Pentanol/Karanja oil biodiesel/diesel fuel blends in a common rail direct injection engine. The addition of higher-order alcohol (n-Pentanol) will improve the low temperature properties of the biodiesel-diesel blend and high volatility and low viscosity of Pentanol will significantly reduce the emissions. The fuel blend B20P10D70 (KME 20%, n-Pentanol 10% and Diesel 70%) was carried out at 21°CA and 25° CA respectively with varied EGR at 10% and 20% to test both the engine parameters (BTE and BSFC) as well as exhaust gas emissions (CO, NOx, HC and Smoke).
Experimental studies on the effect of Carbon nanotube additives with Calophyllum Inophyllum biodiesel in CI engine
Authors: Deepak Vishnu , Arshadarshan S , Kasiraman G 
Published: October 2021

Abstract
The rapid depletion of Non-renewable fuel sources coupled with environmental degradation, has led us further into the exploration of alternate energy resources. Biodiesels originating from non-edible feedstocks have garnered much attention in a span of few years. The current study focuses on the addition of Carbon Nanotubes in Tamanu oil biodiesel in a Diesel engine. In this study, parameters such as brake thermal efficiency, unburned hydrocarbon, carbon monoxide, and NOx emissions have been studied. The performance of these biodiesel-diesel blends were charted and results are compared with diesel. It is noted that the inclusion of nano-additives in dosages of 30 and 60 ppm enhances brake thermal efficiency, the drawback being increased specific fuel consumption. The emissions of HC, NOx and emissions show a favorable trend with addition of CNT but CO2 emissions were observed to be on the higher side. Also graphs were plotted revealing the relevant combustion characteristics of the test fuels. They are further discussed in detail and a comprehensive conclusion was made.
Modern concepts and application of soft robotics in 4D printing
Authors: Bharani Kumar S , Sekar S D , Sivakumar G , Srinivas J , Lavanya R , Suresh G 
Published: October 2021

AbstractRecent developments in (AM) additive developed normally Three-dimensional (3D) printing is a term used to describe printing that is three-dimensional in nature, have enabled researchers to use traditional production methods to create previously unthinkable, complex shapes. Usage of smart materials by the way of adopting the external stimuli in printing is part of a 3D-printing research division called 4D-printing.4D-printing allows for the development of dynamically controllable shapes on-demand by the addition of sometime as another dimension. The potential of 4D-printing has been significantly expanded by recent advances intelligent synthetic materials, new printers, processes of deformation and mathematical modelling. This paper deals with improvement in the area of 4D-printing, with a importance on its practical applications. With explications of their morphing mechanisms, Smart materials are discussed and produced using 4D-printing. Moreover, case study on soft robotics is discussed. We end with 4D Printing problems and future opportunities.
Performance and aerodynamics study on wind turbine
Authors: Sathiyamoorthy K , Sowrav Raj V R , Mathan Raj V , Yoghanandhan L 
Published: October 2021

Abstract
The importance of vertical axis wind turbine is developing due to their compactness and simple design among the researchers on renewable energy development. Some performance improvement techniques are famous in the field of Darrieus H – Rotar wind turbine. This paper is focusing to find out the efficiency of the wind turbine by adding flap and corresponding optimum position and angle of it. The numerical approach is used in this article using Computational Fluid Technologies (CFD) in the 2D domain. The k-ε SST 2 equation model is used for simulation purpose for obtaining its coefficient of momentum and performance. The validation of the result has been done using a grid-independent test by changing the element size. The performance parameters are obtained using simulation techniques and plotted in a standard manner to optimize them.
Static investigation of roselle waste powder reinforced bio polymer composite
Authors: Dharmendra B V , Vivek S , Ramu P , Srinivasan T , Suresh G , Meenakshi C M , Lavanya R 
Published: October 2021

AbstractToday the entire research community is looking for sustainable materials. In that process, more research is going on to utilize the natural materials as binders, fillers, reinforcement etc., to enhance the mechanical and thermal properties without affecting the nature. Numerous amount of research is carried out various regions of the world on the usage of pine, sisal, hemp, bagasse, jute, bamboo, coir as reinforcement. This study focuses on the utilization of agro waste like Roselle (Hibiscus Sabdariffa) as reinforcement material in epoxy LY 556 matrix along with different volume percentage of natural filler to form a unique bio based composite material. The composite specimens were fabricated by vacuum bag moulding method. The mechanical properties of the fabricated specimen at different compositions is studied. The maximum mechanical properties were observed for the composite with 30:70 volume percentage Hibiscus sabdariffa with epoxy resin added composition. From the results we can conclude the composite developed using Roselle powder and LY 556 epoxy would be very good alternate for various light weight material applications.
Comprehensive status of energy and its alternative sources
Authors: Pallavi S , Thangadurai N 
Published: October 2021

Abstract
India having 18% of the world population but uses only 6% of the primary energy, and it is rapid growing economy and already third largest. And it is compelled to go ahead in innovations in energy because expansion, modernisation, and expansion of the country. India Energy Outlook - experienced unique growth in solar energy in recent years by the technological improvement, cost reduction and government policies enhancing successively. In wind energy generation cost is most influencing element to manufactures and developers and it is in suitable in onshore compare with offshore. Now a day’s renewable policies are essential for global expansion and analysis about pivot elements to implement. Coal, electricity, natural gas is indispensable energy for policy makers International Energy Agency. Our current focus is how to focus future energy demand for conservation in building and industry and alternative fuels will play a major role to facing this demand. Electric utility face financial, environmental, and other constraints. Recently micro algae as great sources of renewable energy and grown in non-arable land using alternate for water sources like sea water. Declining of fossil fuel reserves the environment focus on the alternate sources of energy, wind energy with surprising growth of 40 % over the past five years.
Investigation of emission and performance analysis of honne oil in VCR diesel engine
Authors: Subhanandh B V , Abilash N , Saji Raveendran P 
Published: October 2021

Abstract
The world is facing two serious problems: energy crises and pollution. The daily increase in industrialization and the number of automobiles is the reason for these two problems. This work focus on to analyse the performance characteristics and emission parameters of the diesel engine for the blend of calophyllum inophyllum (Honne oil) Biodiesel blend (B10, B20 and B30) and Also find out how they affect the performance of the I.C Engine. While testing, the compression ratio of the engine was in the range of 15 to 18. Then speed of the engine is constant (1500 rpm). In conventional diesel engines and exhaust gases such as carbon monoxide (CO), oxides of nitrogen (Nox), hydrocarbons (HC) has been reduced. Considering that, by using this hybrid system, the thermal performance and the emission system must be investigated.
Usage of hemp and vetiver blended with lime as natural additives to reduce greenhouse gas emissions
Authors: Prakash Vandana Loka , Ravi R 
Published: October 2021

Abstract
This research demonstrates the neutrality of greenhouse gases with the application of hemp blessed as a simple natural filler for fabric materials, which absorbs greenhouse gaseous like CO2, CO and NOx. Notably in our research hempcrete drafted as heat-insulating dressing material throughout the load-bearing core of panel structures, Hemp,chrysopogen zizanoides used in homes with the extension of bonding bicomponent (hydraulic lime). Our research focusses on Lime-hemp, a lime-vetiver matter, an innovative idea and heat-insulating substance that enhanced greenhouse gas sequestration and enhance heat insulation like artificial materials. It gives super fragrance along its lifetime, Hempcrete is a mixture of hemp, lime hydrate, and water. This is recyclable stuff that contributes tremendous warmth and sound insulation. The most significant fact in the improvement is that it accelerates the setting of lime. Specifically, Hempcrete develops rather swiftly to absorb greenhouse gases, enhance heat insulation. Our main objective was achieved in this novel research by natural additives when blended with lime with around 96% greenhouse gas sequestration from panels made by natural additives. The emissions are checked with AVL 5 gas analyser and the temperature of the materials during the operation by IR temperature gun. It is also observed thatt by using these panels, we can enhance the heat insulation also which is an additional advantage of using the natural additives.
Cryogenic viscous pump analysis based on hemisphere model
Authors: Anish Kafoor N , Vijayakumar M , Ramesh A , Selvakumar P 
Published: October 2021

Abstract
Cryogenic viscous pump (CVP) is also known as fore pump that are mainly designed for the separation of hydrogen isotopes from the helium during the process of regeneration of cryo- pumps. This model will determine the amount of hydrogen which is extracted by supercritical helium cooled pump. It also includes flow rates and inlet conditions that are related to the hydrogen gas flow. This hemisphere model (HM) determines the amount and location which are extracted by the pump as the function of time. During the development of this model the calibration check done for its results, later it has been compared with the measurements of CFP prototype. At the result of this model, it will demonstrate the quantity of hydrogen which is very sensitive to the inlet temperature that is found outside of the Cryopump. Finally, this model will represent the efficient outcome.
The effect of expanded graphite on the performance of paraffin phase change materials used in thermal energy storage
Authors: Venkatesan S P , Nagendra Bodapati Ravi , Ram Chintala Raghu , Venkatesh S , Purusothaman M 
Published: October 2021

Abstract
Paraffin is the most commonly used phase change type of material for thermal energy storage but the main drawback is it has very low thermal conductivity. This study aims to enhance the thermal conductivity of the base PCM through the use of expanded graphite as supporting material. The expanded graphite at different percentage 3wt%, 6wt%, 9wt%, 12wt%, 15wt% is mixed with paraffin and five samples are prepared. Experimental results obtained on the samples clearly show that the thermal properties of samples are improved when compare to that of pure paraffin. It is found that both thermal conductivity and thermal diffusivity are increasing rapidly. Melting temperature is standard there is no change for all the compositions. Specific heat gradually started increasing during the initial time and then it started decreasing as the expanded graphite percentage increased. The latent heat value of this composition has decreased a lot when compared to pure paraffin.
Catalytic Degradation of Used Plastics oil as Liquid Fuel for IC Engines
Authors: Abdul Munaf A , Premkumar P , Velmurugan A , Nalluri Premdasu , Rajesh Kanna S K , Nishanth Jude Roy J , Suresh G 
Published: October 2021

Abstract
Plastic pyrolysis oil (PPO) having the acceptable combustion lineaments and in addition, it can be used as alternative fuel for IC engines by blending together with diesel. In the research, used and disposed high-density polyethylene plastics such as plastic bottles, cans and bags have been used to extract the plastic oils from the self-developed pyrolysis reactor. Liquid oil from the plastic has been obtained by heating the waste used plastic in the reactor at 300–500 °C for ceaseless 2–3 hours in the fully locked environment. The obtained plastic hot gases as consequence, been cooled to acquire plastic pyrolysis oil in the liquid form. Further, the oil has been purified and blended along with the diesel in different propositions to conduct the trial experiments to observe the performances. The characteristics of the combustion experiments include emission and performance aspects. The attributes such as smoke density, NOx emission, CO emission, HC emission, CO2 emission as well as exhaust gas temperature and oxygen allocation have tested. The blends of diverse ratios have related and the plastic oil bearing substantial improvements.
Computational design and analysis of patterned micro-heaters with various thickness and trace width
Authors: Waghmare S , Hasan Mohammed Adnan , Manikandan S , Datta Shubhabrata 
Published: October 2021

Abstract
Micro heaters are important part in miniaturized heating applications. These applications required precise control of temperature over the applied surface that need to be heated. This present work is the computational study of the micro heater performance under various design criteria. Three different models of the heaters were studied for multi-physical phenomena, viz. the temperature uniformity and the mechanical stability. Effect of various parameters of the heaters, viz. pattern design, applied voltage and layer thickness, for nichrome (NiCr) based micro-heaters have been studied using COMSOL Multiphysics. Finally, conclusions are made by comparison of design parameters to reach best solution among nichrome micro-heaters.
Experimental analysis of combustion and emission characteristics of a CI engine using linseed oil with methanol additives
Authors: Dey Rishav , Sreekumar Madhav , Panneerselvam S , Mathanraj V 
Published: October 2021

Abstract
The use of Biodiesel is increasing all around the world which makes it an alternate substitute for Diesel In the current study Linseed oil is used as the alternative for Biodiesel with methanol additives. The Blending ratios used were B20, B40, B60, B80, B100, B20+5%, B40+5%, B60+5%, B80+5% B100+5%, B20+10%, B40+10%, B60+10, B80+10%, B100+10%. The experiment was carried out on a 4 stroke diesel engine which runs at a maximum speed of 1500 rpm with maximum rated power of 5.2kW. The experiments results indicates that B20+5% shows better performance characteristics and B40 + 5% shows good performance characteristics. The emission tests showed that CO2 emissions of the B20+5% were lower than that of diesel. Though lower than diesel, the performance characteristics of B40+5% were better than the other blends.
Experimental investigation on the usage of ethanol and DEE as additives in a CI engine
Authors: Srinath Aditya , Aerath Antochan Sony , Kasiraman G 
Published: October 2021

Abstract
Mankind has been trying to find alternate fuels for centuries now and the developments made in the field of Bio-diesels have been extensive. As the world calls for a more sustainable approach to fuel procurement, processes of agricultural fermentation with homegrown yields such as wheat and sugarcane have opened up the potential for producing ethanol in a cost-effective, sustainable and efficient manner. Our investigation dives into integrating ethanol with traditional diesel to study its merits and demerits. To overcome some inherent flaws of ethanol, we invite another potent contender to the mix, Di-ethyl ether, which acts as a cetane booster. Blends of different proportions are mixed and tested before it undergoes the usual string of performance, combustion and emission tests. Graphs were plotted, outcomes were studied and a comprehensive conclusion was made, covering the positive and negative effects of the blends created.
Optimal parameters of sunflower seeds complex pre-sowing treatment
Authors: Aksenov M P , Yu Petrov N , Zvereva G N , Belyaev A I , Pugacheva A M 
Published: October 2021

Abstract
The sowing quality of seeds is determined by the conditioning properties, one of which is germination. The potential yield depends on the number of germinated seeds, therefore, increasing the conditional properties of seeds by pre-sowing treatment is an urgent problem in agriculture. The introduction of an integrated method of pre-sowing seed treatment allows to summarize the positive effect of the electrophysical effects of an electric field and a biological preparation. The article presents the results of the studies carried out to establish the optimal treatment regimes for the treatment of sunflower hybrids NK Neoma, LG 5500, ES Petunia seeds in an integrated way. The parameters of seed treatment were determined - electric field strength 8 kV/cm, exposure 60 seconds, semi-dry etching with Zerebra Agro growth regulator with an aqueous solution in a proportion of 10 ml of the preparation, 1000 ml of water. Laboratory germination in relation to control increased in hybrids NK Neoma and LG 5550 by 10%, in hybrid ES Petunia by 12%.
Conceptual model for measuring the scientific knowledge diffusion in the context of digitalization
Authors: Rozaliev V L , Kholstov A V , Pronichkin S V , Mamai I B 
Published: October 2021

Abstract
The main idea of digitalization is the transition to a new technological order and, as a result, gaining competitive advantages, therefore, measuring the diffusion of scientific knowledge in the digital economy is especially relevant. The existing articles do not offer general models for the transfer of knowledge, regardless of the digitalization industry. The authors of the article have developed a conceptual model for measuring the diffusion of scientific knowledge, which allows, according to the characteristics of knowledge carriers, to assess the proximity of their paradigms, as well as the likelihood of delays in the transfer of knowledge due to the need to relay knowledge, depending on the paradigms they use. Criteria to assess the reliability of the scientific knowledge transfer in the context of digitalization are proposed.
To the development of intelligent adaptive learning systems
Authors: Zhikharev A G , Deeney I A , Igrunova S V , Klyuchnikov D A , Yu Frolova A 
Published: October 2021

Abstract
The article describes the prospects for creating an informational adaptive automated learning system (based on the English Language) using advanced artificial intelligence technologies. In particular, the work shows that the quality of education largely depends on the form of educational content and the parameters of the learning object (a student) associated with its perception of information. The formulated hypothesis of this work indicates that according to the written speech of the learning object, it is possible to classify it (the learning object) by the type of perception of educational content. For the first time, the paper proposes the use of the apparatus of artificial neural networks to solve the problem of automatic classification of learning objects according to the parameter indicated above, while analyzing the text written by this object. For the formation of educational content in the required form, it is proposed to use the system-object method of knowledge representation. The logical architecture of an adaptive teaching automated system is being considered.
A method for solving the open-pit mine production scheduling problem using the constraint programming paradigm
Authors: Zuenko Alexander , Oleynik Yurii , Makedonov Roman 
Published: October 2021

Abstract
A method is developed to solve the problem of open-pit mine production scheduling, which is based on Constraint Programming and is used in working out an optimal plan of mining operations, taking into account heterogeneous economical, technological and some others requirements imposed by the customer. An original model is proposed to represent the problem considered as a constraint satisfaction problem. As the customer may verify the requirements, the domain model should enable addition of the new constraints and/or eliminate the existing ones. With the domain model being developed, the method proposed makes it possible to reach accurate solutions at the expense of highly effective reduction algorithms for each type of constraints and at the expense of specialized heuristics for non-perspective alternatives reduction in a search tree. The approach proposed enables addition of different constraints, even those for which it is difficult to find an analytical expression.
Development of an approach and software tools to distance the rehabilitation process for adaptation to home use
Authors: Orlova Y A , Dmitriev A S , Donsckaia A R , Noskin V V , Sibirny N D 
Published: October 2021

Abstract
The article analyzes the existing approaches and software solutions for carrying out exercises to restore the patient’s hand mobility in a remote format, shows the process of developing the admin panel module for the existing solution “Devirta.Accuracy”. This article proposes an approach to solving the problem of distancing the process of restoring hand mobility using the application “Devirta.Accuracy” and presents the implementation of the program.