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Numerical investigation of a modified NACA-0018 Airfoil using Bumpy Profile at Low Reynolds Number

Flow separation is one of the major problems affecting the performance of all airfoils under a high angle of attack. Several passive flow mechanisms have been investigated to limit this phenomenon and improve the aerodynamic efficiency of the airfoil by increasing the lift force while decreasing the drag force associated with it. This study investigates the application of surface bumps over both the suction and pressure sides of the NACA-0018 airfoil at low Reynolds number of 500,000. The bump shapes resemble the shape of the Hawk which does not show a smooth profile in nature. The bumps are introduced in the form of sine waves with different amplitudes and periods. Bumps on each side have been investigated separately, the optimum amplitude and period are determined, the two optimum parameters were joined together forming a new airfoil shape. It was found that this approach limits separation at the stall angle and reduces the drag force as a result of the bumps on the suction side. The bumps on the pressure side were found to enhance the lift force as high-pressure spots are formed, which increases the differential pressure. Glide ratio improvement of 17% was reached using the modified airfoil.

Published by: Ammar Ewis, Ahmed El-Baz

Author: Ammar Ewis

Paper ID: V6I2-1470

Paper Status: published

Published: April 28, 2020

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Research Paper

Application of response surface methodology to optimize performance and emission characteristics of a diesel engine run on Karanja methyl ester blend with conventional diesel oil and picric acid as an additive

An experimental investigation was done on diesel engines run on a blend of Karanja biodiesel and diesel in the ratio of 40:60 (B40) with different additive percentages (1.5%, 3%, and 4.5%). In this work, Picric acid dissolved in n-butyl alcohol (nBAPA) is used as an additive. The performance and emission tests were carried for three inputs-Load, compression ratio (CR) and B40 with different percentage of nBAPA and six outputs- brake specific fuel consumption (BSFC), brake thermal efficiency (BTHE) and Hydrocarbons (HC), Carbon monoxide (CO), Nitrogen oxides (NOX) and Carbon dioxide (CO2). A set of experiments were conducted by using the central composite design of response surface methodology (RSM) through Design Expert-10. The predicted and experimental maximum BTHE of 23.52% and 23.44 % were obtained at load 9.36 kg, CR 15, B40 with a 3% additive. The predicted and experimental minimum BSFC of 0.38kg/kWh and 0.37 kg/kWh were obtained load 9.36 kg, CR 15, B40 with a 3% additive. The predicted and experimental minimum CO2 of 2.13% and 2.29% were obtained at load 4 kg, CR 16, B40 with 1.5% additive. The predicted and experimental minimum HC of 3.33ppm and 4ppm was obtained at load 2.63 kg, CR 15, B40 with a 3% additive. The predicted and experimental minimum CO of 0.055% and 0.056% were obtained at load 8 kg, CR 16, and B40 with 4.5% additive. The predicted and experimental minimum NOx of 113.71ppm and 120ppm were obtained at load 2.63 kg, CR 15, B40 with a 3% additive.

Published by: Sagar Tadkal, M C Math

Author: Sagar Tadkal

Paper ID: V6I2-1456

Paper Status: published

Published: April 28, 2020

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Research Paper

Comparative studies of Eri Silkworm (Philosamia Cynthia Ricini) reared on artificial diet and natural castor leaves (Ricinus communis Linn)

Eri-silkworms (Philosamia cynthia ricini) were reared on castor leaves (its natural host plant) from 1st to 5th instars and artificial diet upto second instar then shifted to castor leaves. The larval duration was one day more in diet batches than leaves batches. The cocoon yield increased 13% cocoons in diet feed batches than leaf fed batches. Flimsy cocoons % was more in leaves chawki reared Eri silkworm. The Stable cocoons crops in artificial diet Eri chawki rearing than leaves rearing.

Published by: Mousumi Mondal, Dhattatreya Hosagrahar, Srinivas Bandlamuri Venkataramana

Author: Mousumi Mondal

Paper ID: V6I2-1471

Paper Status: published

Published: April 28, 2020

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Research Paper

IoT based smart car parking system

This paper presents an IoT Based Smart Car Parking System which displays the parking slot number of vacant slots on the LCD display when the car arrives at the gate. It initially checks the presence of the vehicle in each of the parking slots and then displays the slot number of a vacant slot on an LCD display placed near the gate. This guides the new car to park at the appropriate slot. The status of each parking slot is also uploaded onto thingspeak cloud platform. Raspberry pi is used to control the whole mechanism. This prototype also gives an option of controlling the opening/closing of the gate by a website. The gate can be controlled by a website created using HTML and flask package in Raspbian Operating System. This feature is added for security purposes. The objective of this paper is to develop an intelligent, user-friendly automated car parking system that reduces the manpower and traffic congestion and to offer safe and secure parking slots within a limited area.

Published by: Shravya K. Holla, Keerthi S., Vidhya Dhari L.

Author: Shravya K. Holla

Paper ID: V6I2-1466

Paper Status: published

Published: April 28, 2020

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Research Paper

Identification of potent COVID-19 Main Protease (Mpro) inhibitors from Curcumin analogues by Molecular Docking Analysis

These days, COVID-19, a new strain of coronavirus COVID-19 is rapidly spreading, has affected more than 210 countries and territories received global attention. The lack of efficacious medicines or vaccines in opposition to SARS-CoV-2 has also worsened the situation. Hence, there is a pressing want to increase up research for the improvement of potential therapeutics and low priced diagnostic in opposition to COVID-19. The crystallized form of COVID-19 main protease (Mpro) was illustrated by a Chinese researcher Liu et al. (2020) which is a novel therapeutic drug target. The goal of the study is to identify COVID-19 Mpro potential from mono-carbonyl analogues of curcumin through binding free energy analysis into COVID-19 by utilizing molecular docking. We conducted docking simulation to mono-carbonyl analogues of curcumin as ligands into the main protease of COVID-19 as a protein. The 3D structure of the COVID-19 Mpro was downloaded from PDB (Code ID: 6LU7). The structure of ligands was prepared using Chem Bio Draw Ultra 12.0.02. Docking process, the interaction, and binding of ligands – protein was done using the software Molegro Virtual Docking (MVD) and visualized using the software Molegro Molecular Viewer (MMV). The results showed hydrogen bonding and Steric interaction between compound A2 ( curcumin analogues) with, COVID-19. Moldock scores of compound A2 is -202.476 kcal/mol. It is predicted that compound A2 has potency as a lead compound to find new antiviral candidates against COVID-19 for possible therapeutic agents.

Published by: Jaydip Bhaliya, Vraj Shah

Author: Jaydip Bhaliya

Paper ID: V6I2-1462

Paper Status: published

Published: April 28, 2020

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Others

Alternatives to mitigate Corona

Coronavirus is most pandemic virus and it is challenging too for the scholars and scientists to discover its vaccine. Like every organism in nature struggling for survival, they evolve or mutate. Similarly, the coronavirus has changed its genome sequence to adapt to the new species. In fact, research has shown COVID-19 has mutated repeatedly in ways to boost its survival which results in more difficulties to discover its vaccine. We can’t hit the coronavirus directly and neither our immune system is capable enough to fight with it, but by killing the infected cells, we can kill the corona virus too.

Published by: Manjeet Singh, Lavina Pratap Bhambhani

Author: Manjeet Singh

Paper ID: V6I2-1463

Paper Status: published

Published: April 25, 2020

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