Manifold structure shows important effects on the velocity distribution among parallel microchannels. The bifurcation structure was adopted as the manifolds of microchannel array in a plane and a specific case was illustrated to estimate the effects of structural parameters on the velocity distribution using numerical simulation. Simulation result indicated that the velocity distribution appeared to be double W-shape, and somewhat symmetrical. In addition, the velocity values in each W-shape distribution also appeared symmetrical. It also indicated that two bifurcation channels from the same low-level bifurcation channel had different velocity values due to different singular losses. Larger microchannel length, smaller microchannel width or depth, larger RW or RL, suitable RZ were favor in obtaining relatively uniform velocity distribution among microchannels.
[1]
Longsheng Lu,et al.
Optimal design of complex manifold geometries for uniform flow distribution between microchannels
,
2008
.
[2]
Masaru Noda,et al.
CFD-based optimal design of manifold in plate-fin microdevices
,
2004
.
[3]
Lingai Luo,et al.
Design and scaling laws of ramified fluid distributors by the constructal approach
,
2004
.
[4]
P. Cheng,et al.
Heat transfer and pressure drop in fractal tree-like microchannel nets
,
2002
.
[5]
J. Corriou,et al.
Optimal design for flow uniformity in microchannel reactors
,
2002
.