Artificial Neural Network Analysis of Sintered Bronze Porous Sinks for Heat Dissipation Dr. Ashish Mahalle Associate Professor Laxminarayan institute of Technology, Nagpur (M.S.) India Kishor R. Borakhade Research Scholar, S.G.B. Amravati University, Amravati (M.S.)India Abstract— The use of porous fins will be evaluated and comparison made to some commercially available heat sinks in order to prove the use of these materials as heat transfer promoters for the application of cooling electronics. However utilizing metal foam in conjunction with a block heat sink requires additional mechanical connections. The mechanical connections may be accomplished using solder or a layer of thermally conductive adhesive. This additional connection increases thermal resistance and hinders effective dissipation of heat. The flow analysis studies are how to enhance heat transport for given flow geometry and externally imposed physical constraints. The analysis of porous fins is carried out using ANN for the estimation of thermocouple temperatures on the fin. The initial parameters like heat input, valve opening position and various temperatures are given to ANN software for training to create a dynamic environment. The predicted values of temperature are in close agreement with actual values. Keywords— ANN, Metal foam;Pore diameter ; pressure drop;friction factor,Heat transfer coefficient. I. INTRODUCTION Metal foams consist of small filaments that are continuously connected in an open celled foam structure as shown in fig 1. They are used to construct light weight structures, to develop energy absorption devices and for thermal applications. Although it is proven to be very promising, the use of the open-cell porous materials in fluid flow and heat transfer application requires an extensive effort to better understand the behavior of the fluid flowing through its matrix composition and the heat transfer mechanism occurring in the medium. To enhance convective thermal transport we have focused on the utilization of metal foam in thermal system. The motivation is attributed to enhance heat transfer due to the high surface area to volume ratio as well as flow mixing due to toutuosity of metal foam.. The flow recirculates at the back of the solid fibers; and for high enough pore scale Reynolds numbers, turbulence and unsteady flows occur [1]. Fig. 1. Open celled foam structure. [1] II EXPERIMENTAL APPARATUS The air duct is used for experimentation. The equipment consists of a rectangular area designed and constructed, clipped tightly together with fasteners and supported at four points along its length. The duct was 230mm wide and 200mm height. The cross-sectional area of the duct is 0.046m 2 and the overall length of the duct section was 1200mm. Entry and exit duct-sections are separated by a plain center-section which was easily removed. The test portion was fitted with the help of flanges and high temperature resistance gaskets, so that air should not bypass at the test section directly. A centrifugal blower was fitted with an electric motor of specification 200/240 V, 3-phase, 4.6 amps, 2850 rpm to induce air from wind tunnel. Figure 2 is a picture of equipment. Fig.2. Air duct used in the experimental work International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 www.ijert.org IJERTV4IS040779 (This work is licensed under a Creative Commons Attribution 4.0 International License.) Vol. 4 Issue 04, April-2015 635