Title :
Entrance Length Observation for Water Flow in Microchannels with Surface Irregularities
Author :
Taniselass, S. ; Sauli, Z. ; Mansor, I. ; Retnasamy, V. ; Poopalan, P.
Author_Institution :
Sch. of Microelectron. Eng., Univ. Malaysia Perlis, Jejawi, Malaysia
Abstract :
Micro fluid flow development with presence of roughness before and after flow development in straight square micro channels has been investigated computationally. Two micro channels were designed with different hydraulic diameters(5μm & 2μm) to investigate water flow development. Each micro channel were simulated using low and high Reynolds numbers (0.056 & 280) to observe discrepancies. These Reynolds numbers and hydraulic diameters were used as parameters to carry out the investigation together with channel roughness. The simulation results shows that the liquid flow development is in correlation to the hydraulic diameter of micro channel and Reynolds number were associated with liquid velocity. The velocity magnitude increased after the liquid flowed across the existing rough element for micro channel with hydraulic diameter is 5μm for Reynolds number 280. The simulations have been carried out by utilizing laminar model.
Keywords :
flow simulation; laminar flow; microchannel flow; surface roughness; channel roughness; entrance length observation; high Reynolds numbers; hydraulic diameters; laminar model; liquid flow development; liquid velocity; low Reynolds numbers; microfluid flow development; rough element; size 2 mum; size 5 mum; straight square microchannels; surface irregularities; velocity magnitude; water flow; Reynolds number; entrance length; flow development; hydraulic diameters; square microchannel;
Conference_Titel :
Computational Intelligence, Modelling and Simulation (CIMSiM), 2010 Second International Conference on
Conference_Location :
Bali
Print_ISBN :
978-1-4244-8652-6
Electronic_ISBN :
978-0-7695-4262-1
DOI :
10.1109/CIMSiM.2010.72
