Georgios Rousos

Since science was of interest to me, I first studied Material Science and then moved to Mechanical Engineering as my love of kinematics and materials was strong. However, in the last year of my Mechanical Engineering degree, I fell in love with fluid dynamics and computational modelling. A strong influence came from the professor and lecturer who taught me computational fluid dynamics, where I also learnt new techniques and used software such as SIEMENS STAR CCM+ to solve analytical problems that revolved around CFD models. CFD modules intrigued me so much that I based my thesis around this topic. It was a great experience capturing data and a great feeling when my thesis was completed. Since the completion of this piece of work, a future in the field of fluid dynamics or numerical solutions around fluids is something I am extremely looking forward to.

Numerical Analysis of Heatsinks at rough fins with forced convection

Project introduction

Processors are getting more and more powerful with smaller lithographic nodes. Various studies refer to better thermal management of computer hardware cooling by the development of better heatsinks.

Microchannel extruded fin heatsink efficient convective cooling during high CPU operations without changing the overall heatsink geometrical design.

Previous research studies found that the overall surface roughness of heatsink fins tend to produce more efficient thermal management. In order to design better fins, a few modern techniques and expensive machines were used for the studies

Ventola1 et al. emphasized a researched study of surface rough components to improve the efficient of electronic devices cooling, and thermal convective heat transfer coefficient overall. However, a more sophisticated and interesting approach was pursued. For this, the researchers applied Direct Metal Laser Sintering (DMLS) at the plane of the fins. By the manufacturability of the DMLS, artificial surface roughness was achieved and studied scientifically. Therefore, numerically, a baseline smooth surface model with two unique modified baseline models were compared based on the DMLS manufacturability.


A wide range of applications are available for the products of heat sinks. Recently the most exponential increase is based on the conventional electronic appliances and computer systems. More analytically, a few of the applications based on the electronic and electrical applications are:

Micro heatsinks

Macro heatsinks


The overall aim is to produce a more efficient heatsink by comparing different types of modified heatsinks with the same extruded fin design. As microprocessors have been getting hotter in recent years, more efficient heatsinks are needed with new design methods.


Theoretical and numerical models

The general and theoretical formulas can be interpreted into single governing equations derived from numerical turbulent complex mathematical, and physical expressions for the foundational operations of heat transfer and convective heat transfer.

The governing equations for a duct on a microchannel is interpreted numerically as TimeAveraged Navier-Stokes Equation (RANS) based models on rectangular coordinates.

Computational Modelling



Download Georgios's project overview poster (PDF) (this pdf document is not fully accessible but the contents within it can be viewed via the content on this page)

1Ventola, L., Robotti, F., Dialameh, M., Calignano, F., Manfredi, D., Chiavazzo, E., and Asinari, P., (2014), Rough surfaces with enhanced heat transfer for electronics cooling by direct metal laser sintering. International Journal of Heat and Mass Transfer. Vol., 75, pp., 58-74.

Headshot of Georgios Rousos

Georgios Rousos
BEng (Hons) Mechanical Engineering

Committed to science and engineering, I find the beauty of this world lies in the depths of the unknown. Also keen on electronics and computers, growing up as a kid through coding and soldering. However, in recent years, a new interest was found in the department of computational field dynamics.


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