Computational study of heat-transfer in extended surfaces with various geometries

In this work, an analysis has been done on extended surfaces with various geometries to identify the better heat transfer rate. The geometries of extended surfaces namely – bar fins, stepped fins, stepped fins with indentations have been modelled, investigated and studied. Based on the design identification and numerical analysis the extended surfaces with increases surface area has increased heat transfer. From numerical data the fins with indentations has increased surface area and heat transfer. The indentations have been designed with varying diameter used in the fins are 4mm, 3mm, 2mm respectively and analysed using a fixed computational method. It is found that the spherical notches with varying diameter were more effective than the other fins and making the notches increases the heat transfer was much effective than increasing the diameter of the indentation in the stepped fin. This work shows the design, analysis, and result of some extended surface geometries with fixed input boundary condition.