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Full-Text Articles in Engineering
Low Reynolds Number Flow Through Nozzle-Diffuser Elements In Valveless Micropumps, Vishal Singhal, Jayathi Y. Murthy, S V. Garimella
Low Reynolds Number Flow Through Nozzle-Diffuser Elements In Valveless Micropumps, Vishal Singhal, Jayathi Y. Murthy, S V. Garimella
CTRC Research Publications
Flow characteristics of low Reynolds number laminar flow through gradually expanding conical and planar diffusers were investigated. Such diffusers are used in valveless micropumps to effect flow rectification and thus lead to pumping action in one preferential direction. Four different types of diffuser flows are considered: fully developed and thin inlet boundary layer flows through conical and planar diffusers. The results from the numerical analysis have been quantified in terms of pressure loss coefficient. The variation of pressure loss coefficient with diffuser angle is presented for Reynolds numbers of 200, 500 and 1000. The pressure loss coefficients have been used …