On the effect of surfactant adsorption and viscosity change on apparent slip in hydrophobic microchannels
by Christian Kunert, Jens Harting
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 8, No. 1/2/3/4, 2008

Abstract: Substantial effort has been invested to understand the effect of boundary slippage in microfluidics. However, a satisfactory understanding is still lacking due to extremely precise experiments required. Here, we apply the lattice Boltzmann method to model hydrophobic microchannel flows. We find a possible explanation for experiments observing slip depending on the flow velocity – in contradiction to previous studies. We show that these observations can be explained by not fully developed flow profiles in the channel. Further, we show a decreasing slip length with increasing viscosity and demonstrate the effect of adding surfactant to fluid flow in hydrophobic microchannels.

Online publication date: Wed, 30-Apr-2008

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the Progress in Computational Fluid Dynamics, An International Journal (PCFD):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com