.... L. , and Salvigni , S. , 2010 , “ Laminar, Transitional and Turbulent Friction Factors for Gas Flows in Smooth and Rough Microtubes ,” Int. J.Therm. Sci. , 49 , pp. 248 – 255 . 10.1016/j.ijthermalsci.2009.07.025 [11] Celata , C. P. , Cumo , M. , McPhail , S. J...

... is much lower than the theoretical value without considering axial heat conduction. Fig. 12 Axial conduction effects on heat transfer coefficient for thick walled nickel tube d i  = 910  μ m, d o  = 2005  μ m Heat transfer of air flow in microtubes was experimentally investigated...

...Zhipeng Duan; Y. S. Muzychka The effect of axial corrugated surface roughness on fully developed laminar flow in microtubes is investigated. The radius of a microtube varies with the axial distance due to corrugated roughness. The Stokes equation is solved using a perturbation method with slip...