Experimental Investigation on Heat Spreader Integrated Microchannel Using Graphene Oxide Nanofluid

Abstract

Thermal design consideration is highly essential for efficient heat dissipation in advanced microprocessors which are subjected to conjugate heat transfer under high heat flux with a minimal area for cooling. Generally, these multicore processors develop a localized high density heat flux referred to as hotspot. The effective use of microchannel in order to mitigate the hotspot is found in literature; however, the flow induced hotspot still exist due to maldistribution of flow inside the microchannel. Henceforth, the present study provides an experimental insight on laminar forced convection in a parallel microchannel heat sink accompanied with 1.2 mm thin copper heat spreader with a surface area of 30 mm² to effectively migrate the maldistribution flow induced hot spot. The present experimental study provides a profound insight about the hotspot and migration of hotspot to safe zones; as a result, not only the performance of the multi core microprocessor is highly improved but also the reliability of neighboring components is well secured.

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Notes on contributors

Ganesan Narendran

Ganesan Narendran graduated in Mechanical Engineering from Anna University, Tiruchy (2012). He pursued his Masters at Indian Institute of Information Technology Design and Manufacturing, Kancheepuram (2014). Currently, he is a research scholar in the Department of Mechanical Engineering at National Institute of Technology Karnataka Surathkal. His research activity focuses on experimental and numerical investigation in microchannel based compact electronic cooling devices for densely packed electronic systems.

Nagarajan Gnanasekaran

Nagarajan Gnanasekaran is an Assistant Professor in the Department of Mechanical Engineering at the National Institute of Technology Karnataka, India. He graduated in Mechanical Engineering (2002) from Bharathidasan University and obtained his Master of Engineering in Thermal Engineering (2006) from Government College of Technology and Ph.D. from Indian Institute of Technology Madras (2012), Chennai under the supervision of Prof. C. Balaji. His research interests include computational inverse problems, stochastic modeling techniques, experimental and numerical heat transfer and hybrid optimization, fluid flow and heat transfer in porous media and micro channel heat transfer.

Dharmaraj Arumuga Perumal

Dharmaraj Arumuga Perumal received B.E. degree in Mechanical Engineering from Manonmaniam Sundaranar University, and M.E. degree in Thermal Engineering from Government College of Technology, Coimbatore. He received his Ph.D. degree in the field of lattice Boltzmann method for fluid flows from the Department of Mechanical Engineering, Indian Institute of Technology, Guwahati. He is currently working as Assistant Professor in the Dept. of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India. His current research interests are predominantly focused on the simulation of flows using lattice Boltzmann method and micro- and nanofluidics.