Microfluidics, Multiphase Flows, Heat Transfer, Thermodynamics, Fluid Mechanics Energy Technologies, Energy Systems

**Dr. Pat Walsh** has expertise is in the areas of heat transfer, fluid mechanics, thermodynamics, and aspect of materials science. His primary research interests lie in the application of the above sciences to microfluidic technologies and energy systems. These range from experimental investigations aimed at understanding the physics of multi-phase Taylor flows in microfluidic systems for biological and energy applications to the analysis and prediction of energy flows in large scale projects such as buildings and renewable energy systems. The outputs from this research have been published in over 20 ISI cited journal articles, a chapter in ‘Microfluidics and Nanofluidics Handbook’, over 30 additional peer-reviewed international conference articles, as well as 2 patents on Novel low-profile electronics cooling technologies. Overall, this work has been financed by €500k+ competitive funds attracted by Dr. Walsh. Pat also lectures on both the Civil Engineering and Energy programmes at UL in the areas of fluid mechanics and energy systems.

Howard, J.A., Walsh, P.A. 2014 Heat Transfer Characteristics of Liquid-Gas Taylor Flows incorporating Microencapsulated Phase Change Materials, Journal of Physics: Conference Series 525 (1), 012022

Hillary, J., Walsh P.A., Walsh, E.J., Shah, A., Escobar, S., 2013, An Automated Approach to Developing Compact and Accurate Building Models Utilising an Inverse Heat Transfer Approach, ASME 2013 IMECE

Howard, J.A., Walsh, P.A. 2013, Review and Extensions to Film Thickness and Relative Bubble Drift Velocity Prediction Methods in Laminar Taylor or Slug Flows, Int. J. of Multiphase Flow, vol 55, pp. 32-42.

Howard, J.A., Walsh, P.A. 2013, An Experimental Investigation of Heat Transfer Enhancement Mechanisms in Microencapsulated Phase-Change Material Slurry Flows, Heat Transfer Engineering, vol 34, no. 2-3, pp. 223-234.

Howard J.A., Walsh P.A., & Walsh E.J. 2011, Prandtl and capillary effects on heat transfer performance within laminar liquid-gas slug flows, Int. J. of Heat and Mass Transfer, vol. 54, no.21-22, pp. 4752-4761.

Muzychka, Y.S., Walsh, E.J., & Walsh P.A. 2011, “Heat transfer enhancement using laminar gas-liquid segmented plug flows”, ASME J. of Heat Transfer, vol. 133, no. 4, 041902 pp. 1-9.

Muzychka, Y.S., Walsh, E.J., & Walsh P.A. 2010, “Simple models for laminar thermally developing slug flow in non-circular ducts and channels”, ASME J. of Heat Transfer, vol. 132, no. 11, 111702 pp 1-10.

Grimes, R., Walsh, E.J., & Walsh P.A. 2010, “Active Cooling of a Mobile Phone Handset”, Applied Thermal Engineering, vol. 30, pp. 2362-2369.

Stafford, J., Walsh, E.J., Egan, V., Walsh, P.A., & Muzychka Y.S. 2010, “A novel approach to low profile heat sink design”, ASME J. of Heat Transfer, vol. 132, no. 9, 091401, pp. 1-8.

Walsh, P.A., Walsh, E.J., & Grimes, R. 2010, “Viscous Scaling Phenomena in Miniature Centrifugal Flow Cooling Fans: Theory, Experiments and Correlation”, ASME J. of Electronics Packaging, vol. 132, no. 2, 005002, pp. 1-9.

Walsh, P.A., Walsh, E.J., & Muzychka, Y.S. 2010, “Heat transfer model for gas-liquid slug flows under constant heat flux”, Int. J. of Heat and Mass Transfer, vol. 53, pp. 3193-3201.

Walsh, P.A., Egan, V., & Walsh E.J. 2010, Novel micro-PIV study enables a greater understanding of nanoparticle suspension flows – Nanofluids, Microfluidics and Nanofluidics, vol. 8, no. 6, pp. 837-842.