European Journal of Advances in Engineering and Technology

1-11

Authors: Sotoudeh Hamedi-Hagh and Ahmet Bindal

SNTs (surrounding-gate nanowire transistors) are good candidates to implement low power electronic devices. They provide full gate control over the channel and minimize short channel effects. Design of a high-speed opamp is presented in this paper. It consists of two amplifying stages and an output buffer and is frequency compensated for stable operation. Transistors used have 10nm channel length and 2nm channel radius. The amplifier operates from 1.8V supply and has a voltage gain of 40dB and a phase margin of 42°. The current gain cutoff frequency of the amplifier is 5.1THz and it provides 40dB common mode rejection ratio and 54dB power supply rejection ratio with a slew-rate of 2V/ns. The amplifier area is 320nm by 250nm.

17-25

Authors: Soumen Saha, Utpal Roy and Devadutta Sinha

The latest mobile communications is two types of ad hoc networks are introduced; one is Mobile Ad Hoc Network (MANET) and second one is Vehicular Ad Hoc Network (VANET).VANET is based on IEEE 802.11b wireless standard. This helps to communicate vehicle to vehicle and vehicle to roadside communications. According to Federal Communications Commission (FCC)[1] suggestion for VANET frequency spectrum of 75 MHz in the range of 5.850 GHz to 5.925 GHz. It communicates from one vehicle (source) to another vehicle (destination) through different vehicles (intermediate nodes). A numbers of different routing protocols for communication, ie multimedia data, text data etc. from one vehicle (node) to another vehicle are existing. The Ad hoc On-Demand Distance Vector (AODV) routing algorithm is one of the popular routing protocols for ad-hoc mobile networks. AODV is used for both unicast and multicast routing. In this paper, we propose and implement in the NCTUns-6.0 simulator neural network based Modified AODV routing protocol considering Power, TTL, Node distance and Payload parameter to find the optimal route from the source station (vehicle) to the destination station in VANET communications.

36-42

Authors: Amber Batwara and Sharad Shrivastav

The aim of this study is to numerically simulate the continuous casting products using commercial CFD software ANSYS FLUENT. CFD code only give numerical results on casting like fill time, conversion of liquid to solid phase and many more, but it is not show relation among factors and their responses, so in this study a DOE technique is used for making relationship among factors and responses. Surface response methodology is used for this study using MINITAB software. Four factors are selected for DOE analysis. Box-Behnken Design methodology is final approach which is used in this study.

49-55

Authors: Anu Nair P, Saju Elias, Vincy John and Rajan K Amboori

Heat transfer using natural convection and fluid flow is an important phenomenon in daily life and engineering applications such as HVAC systems of building, harvesting energy using non-conventional energy sources, extraction of heat from electronic equipment and cooling technologies integrated in computer systems. The present study investigates about the two experiments: (1) Heat transfer taking place between two parallel-Vertical Plates by natural convection, in which two walls are adiabatic and other two ends are open to the ambient air and (2) The estimation of constant C in the expression of Nusselt Number from the data of temperature distribution obtained by performing experiments using a parallel Vertical-Plate by maintaining steady state conditions. Two parallel vertical plates made of Aluminium are allowed to cool in air, to ensure that Lumped capacitance formulation is valid. In the first case the Nusselt and Rayleigh numbers were calculated experimentally and compared with the value available from the correlation which is found to be in good agreement. In the second case, the value of C in the expression of Nusselt Number was calculated using Least Square Residual Method and validated this result by introducing this value into the correlation available. The experimental setup which is required has been designed and fabricated.

61-65

Authors: Balwinder Singh, Lini Mathew and Sumit Patel

The objective of this paper is to describe the method for implementing smart features in sugar mill SCADA (Supervisory Control and Data Acquisition) system. Indian sugar industry is the second largest agriculture based processing industry after the cotton textiles industry in India. There are more than 500 sugar factories in India. Over the years, the Indian Sugar Industry has been relying on ‘analog automation systems’ for various controls in Mill Section. Since last decade, the whole world of process industry is transforming from analog to digital, and even Sugar Industry cannot stay lagging the world. But in India, digital automation in sugar industry is very limited. Fully automated sugar mills are very few. The presented method aims towards providing smart automation system in sugar mill. The graphical programming software LabVIEW has been utilized to develop SCADA software. Virtual instrumentation is the latest form of modern technology and it is highly customizable. By using smart SCADA system, the performance and reliability of the sugar mill can be improved.

70-76

Authors: Chithirai Pon Selvan M, Nethri Rammohan and Sachidananda HK

Laser beam machining is a form of non-traditional machining that can machine almost any known materials. It is thermal, non-contact process, which does not induce any mechanical stresses in the work-piece. This paper presents a review on the conclusions of the various research papers available on laser beam machining on the various properties that affect the quality of the process such as heat affected zone formed in the work-piece, laser cut quality and why laser beam machining is more advanced than the other machining processes.