
320 Meshless methods and their numerical properties
al., 2007-2008; Ballhause and Wallmersperger, 2008; Zhou et al., 2008;
Birgersson et al., 2008; Kang et al., 2008; Suthar et al., 2008; Kvarnström
et al., 2009; Joseph and Aluru, 2009; Zhao and Suo, 2009).
The simulation of pH-sensitive hydrogel to this point in the literature is per-
formed by simplifying it as a 1-D problem. This simplication is based on the
fact that the hydrogel is constrained at the top and bottom surfaces in the micro-
uidic ow channel. The cross-section of the hydrogel is essentially circular but
it may deform unequally in different directions when the cross-sectiona ...