The objective of this work is to assess the sensibility of a computer simulation program, employed to analyse the transient behaviour of· domestic refrigerators, to the adopted capillary tube and condenser mathematical modelling approach. Although all the comparisons, presented in this work, are related to a specific computer program, it is believed that, at least in a qualitative way, they are...

Since microfabrication techniques are typically planar processes, microchannel flows typically have significant predevelopment due to the upstream reservoir having the same height as the microchannel. The main concerns of the current study are categorized into finding the effects of typical microchannel geometry on the velocity entrance length in the laminar flow regime and providing the turbul...

Turbulent flows have complex structures due to its nature and its’ analyses are hard either by numerical or experimental means. Hydrodynamic development of turbulent flow is also complex. In this study, velocity distribution in hydrodynamic entrance length pipes investigated depending on axial radial locations. Literature was surveyed for a single empirical expression that provides profile dire...

Experiments were performed to explore the micro-channel cooling benefits of water-based nanofluids containing small concentrations of Al2O3. The high thermal conductivity of nanoparticles is shown to enhance the single-phase heat transfer coefficient, especially for laminar flow. Higher heat transfer coefficients were achieved mostly in the entrance region of micro-channels. However, the enhanc...