IMPACT : International Journal of Research in Engineering & Technology

Number 6-7, 2018

1-6
Experimental Analysis of Air Flow and Heat Transfer through Aluminium Metal Foams

Authors: C. Suresh & S. Vidyashankar NAAS Rating:

Abstract

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Number of views: 375

The aim of the research works was to investigate the effect of pore size of the Aluminium metallic foam on air flow and heat transfer through three different pore sizes. Al foams were produced through infiltration process by open metal die casting using soil granules of different diameter as space holder particles (SHP). The fluid flow tests were conducted as per Darcian principle by using custom-made air duct. Developed Al foam density varies from 0.93g/cc to 1.22g/cc, the minimum density of 0.93g/cc for Al foam with SHP ball size of 8mm. Heat transfer test was conducted on Al foam to compare with commercial heat sink using custom made heat transfer setup. Results shows the pressure drop was directly proportional to the SHP ball size in Al foam, it was varied from 2616 Pa/m to 16023Pa/m for Al foam with SHP ball size 10mm. Heat transfer result showed that around 50% reduction in weight of the heat sink used for 2N3055 transistor by replacing commercial TO3 heat sink with Al foam heat sink.

7-12
Low Flow Charecterzation of Satluj River

Authors: Jai Prakash Nayak

Abstract

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Number of views: 328

The present study was envisaged to estimate low flow characterization of Satluj River. For the present study, Satluj river basin uptoKasol gauging site has been considered and the low flow characterization has been done at three locations viz. Rampur, Suni, and Kasol. The daily discharges of Satluj River at these sites for the years 1964-2011 were used for low flow characterization. The flow characteristics related to low flow domain estimated in the present study were MAR, AMF, Q20, Q50, Q90,Q20/Q90,Q50/Q90, and Q90/Q50. Mean annual runoff of Satluj river varies from 10,606.43 MCM (Rampur) to 13,192.72 MCM (Kasol); Absolute minimum flow from 44.18 cumecs (Rampur) to 73.05 cumecs (Kasol); Q20 from 625.75 cumecs (Rampur) to 826.55 cumecs (Kasol), Q50 from 167.25 cumecs (Rampur) to 206.14 cumecs (Kasol), Q90 from 84.60 cumecs (Rampur) to 98.34 cumecs (Kasol), Q20/Q90 from 7.39 (Rampur) to 8.41 (Kasol), Q50/Q90 from 1.98 (Rampur) to 2.10 (Kasol), and Q90/Q50 from 0.47 (Kasol) to 0.51 (Rampur) respectively. MAM10 value of Satluj River varies from 80.67 cumecs (Rampur) to 92.30 cumecs (Kasol); 10Q2 varies from 78.45 cumecs (Rampur) to 89.91 cumecs (Kasol) and 10Q10 varies from 102 cumecs (Rampur) to 112.46 cumecs (Kasol). Similarly, for average weekly flow, minimum 7-day average flow (MAM 7) varies from 79.02 cumecs (Rampur) to 91.10 cumecs (Kasol); 7Q2 varies from 78.05 cumecs (Rampur) to 89.11 cumecs (Kasol) and 7Q10 varies from100.1 cumecs (Rampur) to 109.63 cumecs (Kasol) respectively. All these values are a very good indicator of aquatic habitat for various species during different growth stages and environmental flows globally are used for recommending.

13-20
Structural Design; Technology and Computerization Not the Problem

Authors: Lamuo Francis Suglo& Jai Prakash Nayak

Abstract

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Number of views: 556

The building industry remains the biggest consumer of extracted materials such as steel, bauxite, and sand wined from the environment and a source of pollution. The advent of computers has further exposed the industry to many complexities. Engineers have adapted to the use of computer-based software to perform designs, analysis and specifications for buildings and structures. The advantages being the improvement in the accuracy of results,efficiency ,and reduction in time. However, this soft ware’s can also impact negatively on the designs and sustainable construction. It is in this regard that this paper presents the results of an analysis and design of a G+5 building from STAAD Pro and ETABS respectively. The methodology employed involved the calculation of loads using manual methods and software and the following factors such as resource conservation, cost efficiency and design for human adaptation were targeted for satisfaction. It was observed that the user must possess enough experience, knowledge in structural behavior, have a strong grasp of structural analysis to be able to manually check reports from the computer as well as have the ability to creatively think about the problems that are to be analyzed in order to improve the accuracy and efficiency of the design. It has also been observed from the percentage of steel data from ETABS, that, the cost of the project can be greatly influenced.