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Role of single bump over the surface of E398 Airfoil to improve the aerodynamic performance

Flow Separation over the surface of the airfoil affect the aerodynamic performance of airfoil, flow separation increases drag and decreases lift. Aerodynamic efficiency of an airfoil can be improved by delaying separation, which increases the lift force and reduces the drag force. Flow separation can be controlled by altering boundary layer behavior such as reducing boundary layer thickness and increases maximum velocity over the surface of an airfoil, these can be done by modifying the geometry of airfoil or other active flow control techniques and passive flow control techniques. In this research, E398 airfoil was selected for analysis. Analysis has been carried out on smooth and modified E398 airfoil, airfoil modified with single bump centered at 0.05C, 0.1C, 0.15C, 0.2C, and 0.3C from leading edge, chord length of an airfoil is 0.128m. The numerical study has been carried out by using Ansys Fluent 14.0 over Smooth and Uni-Bump E398 airfoil, at low Reynolds Number ranging from 18000 to 54000 and Angle of Attack from 00 to 150. Numerical Results show that the aerodynamic efficiency of a modified airfoil with bump centered at 0.1C is higher as compared to smooth airfoil at Reynolds 18000 and 36000. When Reynolds number is 54000, aerodynamic efficiency of a smooth airfoil is higher than the modified airfoil with a single bump at 0.1C. Analysis has been performed by changing the location of bump from 0.5C to 0.3C aerodynamic performance decreases as bump shifted toward the maximum thickness of airfoil because suction pressure decreases on the upper surface of an airfoil. It is observed that as a bump near leading edge of the airfoil, shows the higher aerodynamic performance, the suitable locations of the bump are at 0.5C and 0.1C from leading edge.

Published by: Asif Ali Laghari, Shafiq-ur-Rehman, M. Tarique Bhatti, Allah Rakhio, Manthar Ali Khoso, Sajjad Bhangwar

Author: Asif Ali Laghari

Paper ID: V4I4-1225

Paper Status: published

Published: July 26, 2018

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Research Paper

A study of behaviour of consumer towards online shopping

Electronic commerce, commonly known as e-commerce, refers to the buying and selling of products or services over electronic systems such as the internet and other computer networks. The Internet is the most rapidly growing media during the past decade. Especially, online shopping is a rapidly growing e-commerce area. Online stores are usually available 24 hours a day, and many consumers have internet access both at work and at home. A successful web store is not just a good looking website with dynamic technical features, listed in many search engines. This study aims to establish a preliminary assessment, evaluation, and understanding of the characteristics of online shopping. An effort has been made to investigate online consumer behaviour, which in turn provides E-marketers with a constructional framework for fine-tuning their E-businesses’ strategies.

Published by: Divyeshkumar Vala

Author: Divyeshkumar Vala

Paper ID: V4I4-1357

Paper Status: published

Published: July 26, 2018

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Research Paper

Behaviour of natural sisal fibre reinforce concrete beam in pure torsion

This project it has carried out torsional strength for reinforced concrete elements by using sisal fibers. In last around 3 decades, all over the world are finding out potential applications of a natural fiber base reinforced concrete based element. So many countries research and the investigation was carried out to find the various physical and also mechanical properties, the durability of such products reinforced with natural organic fibers. Since last some years, various researchers investigated the use of fibers in construction materials like mortar, concrete etc. However, all properties of concrete may not improve for the same proportions of the different combination. Mechanical behavior of fiber reinforced concrete composite depends on the structure of composite both, properties of concrete and properties of type fiber used in a mix. Hence, for analysis and prediction about the performance of composite at different loading condition, the internal structure of composite must be characterized.

Published by: Akash Pawar, Nikhil A. Maske, Dr. Ashok S. Kasnale

Author: Akash Pawar

Paper ID: V4I4-1359

Paper Status: published

Published: July 26, 2018

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Research Paper

Some allied gsp-continuous, open and closed functions in topology

In 1995, J.Dontchev has defined and studied the notions of gsp-open sets, gsp-closed sets,gsp-continuous functions and gsp-irresolute functions in topological spaces. In the literature, many topologists have been utilized and defined various concepts using these gsp-closed sets in topology. Quite recently, Navalagi et al have utilized these gsp-closed sets and gsp-continuity to define and study the concepts of gsp-separation axioms, gsp-Hausdorff spaces, allied gsp-regularity axioms and allied gsp-normality axioms in topology. In this paper, we define and study the notions of allied - gsp-continuity, gsp-openness, gsp-closedness, totally – gsp- continuous functions and gsp-compactness in topology.

Published by: Govindappa Navalagi, R. G. Charantimath

Author: Govindappa Navalagi

Paper ID: V4I4-1345

Paper Status: published

Published: July 25, 2018

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Research Paper

Effect of textile mill waste water on growth of Maize (Zeamays.l)

Present investigation was carried out to assay the effects of effluents on seedling growth &plant growth of Maize (Zeamays. L).For that purpose textile effluent were chosen. Concentrations used for the effluents were 0, 25, 50, 75 & 100%.Minimum relative toxicity percentage was in 25% concentration and increases gradually as the concentration increases. Textile effluent has more relative toxicity. Number of seeds also decreases with the increase in concentration. irrigation with high TDS (Total Dissolved Solids) resulted in decrease in optimal crop production.

Published by: Mididoddi Nataraj, Dr. B. S. Krishna, Srinivasareddy Pulagam

Author: Mididoddi Nataraj

Paper ID: V4I4-1290

Paper Status: published

Published: July 25, 2018

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Research Paper

Improved LEACH routing protocol for wireless sensor networks

In wireless sensor networks (WSNs), the present bunch based information accumulation procedure expends more vitality. Additionally, the secured information transmissions are essential for upgrading the information confirmation and secrecy. Keeping in mind the end goal to conquer these issues, in this review, In this paper, we provide detailed analysis on the relations between clustering and routing, and then propose a Low-energy adaptive clustering hierarchy (LEACH) protocol for reliable and efficient data collection in a large-scale wireless sensor network. LEACH adopts the back off timer and gradient routing to generate connected and efficient inter-cluster topology with the constraint of maximum transmission range. The relations between clustering and routing in LEACH are further exploited by theoretical and numerical analysis. The results show that the multi-hop routing in LEACH may lead to the unbalanced cluster head selection. Then the solution is provided to optimize the network lifetime by considering the gradient of one-hop neighbor nodes in the setting of back off timer. Theoretical analysis and simulation results prove the connectivity and efficiency of the network topology generated by LEACH.

Published by: Parvin B. Shaikh, Sachin B. Takale

Author: Parvin B. Shaikh

Paper ID: V4I4-1333

Paper Status: published

Published: July 25, 2018

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