Brake, H.J.M. ter

Burger, J.F.

Elwenspoek, M.C.

Holland, H.J.

Jansen, H.V.

Lerou, P.P.M.

Vanapalli, S.A.

Veenstra, T.T.

Venhorst, G.C.F.

An experimental study of low Reynolds number gas flow across pillars in a microchannel is presented. Various geometries of pillars are considered for systematic comparison. This is for the first time such an investigation is done. The pillars 25 um in diameter and height of 230 um are dry etched in silicon. a 4-point pressure drop measurement setup is used to avoid measuring losses in fittings. Among various geometries considered, shifted sine pattern and rhombus shaped structures with an aspect ratio of 1/3 have the lowest friction factor and circle staggered arrangement has the highest friction factor

Vanapalli, Srinivas

Burger, Johannes Faas

Holland, Herman J.

Jansen, Henricus V.

ter Brake, Hermanus J.M.

Elwenspoek, Michael Curt

University of Twente Research Information

Undetermined

Experimental investigation of friction factors for gas flow across dense pillar matrices in microchannels

http://purl.utwente.nl/publications/54382

Experimental investigation of friction factors for gas flow across dense pillar matrices in microchannels

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University of Twente Research Information