DU Xin, ZHANG Ping, LIU Yongshun, et al. Model and design of through-hole capillary burst valve for capillary driven flow[J]. CIESC Journal, 2010, (10): 2529-2534.
DU Xin, ZHANG Ping, LIU Yongshun, et al. Model and design of through-hole capillary burst valve for capillary driven flow[J]. CIESC Journal, 2010, (10): 2529-2534.DOI:
A model of through-hole capillary burst valve (CBV)is provided with the theory of contact line.The CBV is affected by the dynamic contact angle
expansion angle and advanced contact angle.The requirement for the model is confirmed by the experiment and numerical simulation.Based on the experimental data
a one-dimension model is presented to design the CBV where the flow is perpendicular to the coming flow channel.A new convergent through-hole CBV is designed.When the length of the coming flow channel is larger than 4mm
the CBV is not affected by the degree of the expansion angle of CBV.The experiment with deionized water shows that the CBV with 20 μm height still works well when the capillary number is as high as 4.0×10-3.The CBV designed has the merit that it is easier to meet the requirement for manufacturing the expansion angle of the through-hole.