Starting with two input nanochannels, we simulate 5-layer of nanochannels; at each layer we add additional nanochannel. As a result, starting from 2 input channels, we have 5 output nanochannels. In this simulation, the size of nanochannels are the same. We have a problem when we see that the volumetric flowrate does not equally divided at the t-junctions/branches. Any possible explanation for this? How can we make the flow to be equal?