...Pouya Asrar; S. Mostafa Ghiaasiaan; Yogendra K. Joshi An experimental investigation of the flow boiling of dielectric refrigerant R245fa is conducted in microgaps with enhancement features. A silicon microgap of height 200 μ m populated with pin fin arrays of diameter 150 μ m with spacing 200 μ m...

... Ratio Pin Fins ,” Master thesis, Virginia Polytechnic Institute and State University, Blacksburg, VA. [30] Barigozzi , G. , Cossali , G. E. , Perdichizzi , A. , Boden , A. , and Pacchiana , P. , 2002 , “ Experimental Investigation of the Mean and Turbulent Flow Characteristics...

... to dual clearances on cylindrical pin fins, relative to a channel between parallel plates, in mini/microchannel reactors at low Reynolds numbers. In this work, diffusion limitations to heat and mass transfer in smooth-walled mini/microchannel reactors were minimized by the implementation of microcylinder...

... of VAT with closure relationships to ( a ) a pin fin heat sink and ( b ) a tube bank heat exchanger In this paper, a method is implemented that seeks to alleviate many of the inherent experimental inconveniences associated with other transient methods, and that rigorously models the transport...

...N. K. C. Selvarasu; Danesh K. Tafti; Neal E. Blackwell Previous investigations on the performance of straight pins, pins with tip clearance, and profiled fins showed that closely packed cylindrical pin fins are very competitive with the modified pins. Therefore, the objective of this paper...

... serpentine passages with 180-deg turns under the blade tip cap. In this paper, enhanced heat transfer of a blade tip cap has been investigated numerically. The computational models consist of a two-pass channel with a 180-deg turn and various arrays of pin fins mounted on the tip cap, and a smooth two-pass...

...Ali Rozati; Danesh K. Tafti; Neal E. Blackwell Cylindrical pin fins with tip clearances are investigated in the low Reynolds number range 5 < Re D < 400 in a plane minichannel. Five tip gaps are investigated ranging from a full pin fin ( t * = 0.0 ) to a clearance of t * = 0.4 D * , where D...