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A Review of the Effect of Baffles Geometry on Heat Transfer Enhancement Techniques
Yogesh Sharma ; Amit Rajotiya; Rajinder Kumar; Dr. Anuradha Parinam
Mechanical Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 47 - 50
The thermal performance of a heat exchanger depends upon various parameters like inlet temperature of a hot fluid, type of hot fluid, type of cold fluid, shape of baffles, material of baffles, baffles angle and property of ribs. Basically fluid flow and heat transfer characteristics are largely depends upon the Reynolds number (Re). Reynolds number is basically the ratio of inertia force to viscous force. Re is only the factor by which we can decide whether the fluid is laminar or turbulent in shell and tube type of heat exchanger. Heat exchanger is an adiabatic device in which heat is transferred from one fluid to another fluid across a plate surface. In this paper we have introduced some special type of triangular baffles with rectangular channels. The purpose of this apparatus is to enhance the performance of the heat exchanger. Heat exchangers, nowadays, are one of the most important heat & mass transfer apparatus in industries like oil refining; heat treatment plants, electric power generation etc. are long service life.
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Design of Very Low Losses and High Bandwidth Rectangular Microstrip Patch Antenna for Satellite Communication
Vashali Kirar ; Ankita Gupta; Hemant Kumar Gupta; Dr. Vikas Maheshwari
Electronics & Communication Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 51 - 56
The Microstrip Patch Antenna is now very famous due to its compact size, good gain and directivity bandwidth is mostly not very good in Microstrip patch antenna but in this paper bandwidth of the antenna is very high, Satellite Communication there is a need of very compact antenna ,This paper presents the designs of Compact C-band antenna for communication at 4GHz.antenna is Rectangular Microstrip Patch Antenna(RMPA),basic property of the antenna like simulated design, Return loss, directivity, Radiation Pattern and bandwidth are discussed. This work shows that whenever we increases cut width from 14mm to 16mm its bandwidth continuously increases and reached about up to 169 MHz and losses in 16mm cut width antenna reduces up to 100.972% that is very great achievement in Microstrip patch antenna for satellite communication.
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Study of Interaction between Discrete Granular Particles: An Effort to Simulate A Few Basic Granular Flow Problems
Shivam Bahuguna
Mechanical Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 57 - 69
The field of granular flows has become an important area for researchers due to its application in various industrial areas. One vital reason for recent activity hike in this region is due to the reliance of various industries on transporting and storing granular materials, including pharmaceutical industry which relies on processing of powders and pills, agriculture and food processing industry where seeds, grains and foodstuffs are transported and manipulated, as well as all construction based industries. Additional manufacturing processes, like in automotive industry, rely on casting large metal parts in carefully packed beds of sand. Yet the technology for handling and controlling granular materials is not yet fully developed. Estimates show that about 60% of the capacity of many industrial plants is being wasted due to problems related to the transport of these materials from part of factory floor to another. Hence even a small improvement in the understanding of how granular media behave should have large impact on industry. Initially, one challenge was the realistic simulation of granular materials, like sand or powders, consisting of millions of particles. As an effect, granular flow was extensively taken by research scholars in institutes, which resulted in the development of YADE framework for granular flow simulations. The following paper describes the use of YADE in modelling a few selected problems to show how YADE can be effective to simulate other real life problems related to granular flows.
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Tea Waste Adsorbent for the Removal of Chromium and Copper from Synthetic Wastewater
Hanit Kumar Thapak ; Sumint Singh Trivedia; Laxmi kant Pandey
Chemical Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 70 - 74
There are numerous heavy metals present in Industrial waste water. These heavy metals like (Chromium and Copper) are toxic and harmful for human being especially chromium heavy metal spread pulmonary fibrosis diseases which is harmful for human being. There are many methods to remove and recover the metals from our environment and many physicochemical methods have been proposed for their removal from wastewater. Adsorption is one of the alternatives for such cases and is an effective purification and separation technique used in industry especially in water and wastewater treatments. Cost is an important parameter for comparing the adsorbent materials. Therefore, there is increasing research interest in using alternative low-cost adsorbents. To removing this heavy metal activated charcoal as a good adsorbent but it is very costly. The investigation has found the removal efficiency of tea waste as a low cost adsorbent is fruitful to neutralized heavy metal like (Copper and Chromium).The experiment result showed that maximum removal of Copper and Chromium ion by tea waste is 90% and 92%.
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Effect of Common Salt (NaCL) on Index Properties of Black Cotton Soil
Prakhar Dubey ; Prof. Rajesh Jain
Geo Technical Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 75 - 79
The object of this paper is to investigate the effect of Common Salt (NaCl) on the index properties of Black Cotton Soil. Various amounts of Common Salt (0%, 2%, 4%, 6% and 8%) were added to the soil to study the effect of Common Salt on consistency limits or index properties. The Common Salt (NaCl) for the study is collected from shop in Damohnaka, Jabalpur (M.P) and the soil sample collected from behind Jabalpur Engineering College, near N.C.C campus, Jabalpur (M.P). Based on consistency Index and free swell the soil falls under highly expansive soil category. The extent of modification of properties depends not only on the nature of contaminant, but also on the type of soil such as physical nature, chemical composition and metallurgical properties. These contaminants may be inorganic, organic Solvents or organic matter. Test results showed significant improvements upon the use of Common Salt (NaCl). The plasticity index reduced from 22.6 to 16.84. The free swell value reduced from 41% to 19%. The liquid limit decreased from 45.05% to 34.89%. The plastic limit decreased from 22.6% to 18.41%, also increase in shrinkage limit from 13.48% to 15.76% is observed.
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Intelligent Transportation Systems using IoT Service for Vehicular Data Cloud
T.M.Anand ; K.Banupriya; M.Deebika; A.Anusiya
Information Technology
Year: 2015, Volume:2, Issue : 2
Pages: 80 - 86
Cloud computing is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. To resolve the challenges caused by the increasing transportation issues, we present a novel multi-layered vehicular data cloud platform by using cloud computing and IoT technologies. Two innovative vehicular data cloud services such as an intelligent parking cloud service and a vehicular data mining cloud service. The advances in cloud computing and internet of things (IoT) have provided a promising opportunity to further address the increasing transportation issues, such as heavy traffic, congestion, and vehicle safety. A new vehicular cloud architecture called ITS-Cloud was proposed to improve vehicle-to-vehicle communication and road safety. A cloud-based urban traffic control system was proposed to optimize traffic control.
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Design and Synthesis of 16 Bit Adaptive Digital Filter Architecture
Nishi Gupta ; Rakesh Joon; Ruby Garg
Electronics & Communication Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 87 - 93
Filtering data in real-time requires dedicated hardware to meet demanding time requirements. If the statistics of the signal are not known, then digital filtering algorithms can be implemented to estimate the signals statistics iteratively. Modern field programmable gate arrays (FPGAs) include the resources needed to design efficient filtering structures. This research aims to combine efficient filter structures with optimized code to create a system-on-chip (SoC) solution for various digital filtering problems. LMS algorithms have been coded in VHDL. The designs are evaluated in terms of filter throughput, hardware resources, and speed performance and to evaluate the mean square error of 16 adaptive digital filters.
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Design and Simulation of CMOS Low Noise Amplifier with Micro Antenna for RF Transceiver System
Ruby Garg ; Nitin Kumar; Nishi Gupta
Electronics & Communication Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 94 - 99
The objective of this research is to define a methodology for designing presents the simulation and design analysis of fully integrated receiver system for millimeter and microwave applications. A beauty thought of new design of CMOS LNA, filter and micro strip antenna are largely improves the system integration, reduced chip area and save the cost. In this paper, a three different architecture are proposed and analyzed through Agilent ADS tool. We have designed 90nm CMOS LNA at 10-20GHz to integrate with band pass filter and rectangular patch antenna at same frequency.
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Prevention of Sybil Attack using Cryptography in Wireless Sensor Networks
Pankaj Rathee ; Sona Malhotra
Computer Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 100 - 105
Wireless sensor networks constitute of sensor nodes which are running on battery, small in size, limited memory, computation power and communication capability. Operational environment of sensor nodes is generally unfavorable and unattended which may result in failure of sensor nodes and they are prone to various malicious attacks. One of these attacks is Sybil attack. In this paper Sybil attack is prevented using cryptography. This paper shows the effect of Sybil attack in wireless sensor network and also shows the effect of proposed algorithm on network performance in presence of Sybil nodes.
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Stress and Design Analysis of Triple Reduction Gearbox Casing
Mitesh Patel ; Prof. A. V. Patil
Mechanical Engineering
Year: 2015, Volume:2, Issue : 2
Pages: 106 - 111
The finite element analysis of triple reduction gearbox that constitutes the driving mechanism of a double bascule movable bridge was performed. The triple reduction helical gearbox was made of ASTM A36 Steel. The triple reduction helical gearbox was a three stage gearbox transmitting 112.5 H.P. at 174 rpm with a reduction ratio of 71.05:1. The load calculation for helical gear was performed using the CAD Software package. The reactions were used to apply loads to the finite element model of housing (casing). Geometric model of triple reduction gearbox casing was built using NX-8 and meshed using the ANSYS finite element program. Static structural analysis was performed using a combination of shell and solid elements to determine the deflection and to estimate the stress distribution in the housing. The aim is to improve the strength by reducing the stress and deformation what changes can do in Design that all will discussed about the detail analysis of ANSYS software result for three different cases for gearbox casing .case (1) casing without stiffeners and rings. Case (2) casing with stiffeners. Case (3) casing with stiffeners and rings.
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Abstract
