%0 Journal Article %T Energy minimization for the flow in ducts and networks %A Taha Sochi %J Physics %D 2014 %I arXiv %X The present paper is an attempt to demonstrate how the energy minimization principle may be considered as a governing rule for the physical equilibrium that determines the flow fields in tubes and networks. We previously investigated this issue using a numerical stochastic method, specifically simulated annealing, where we demonstrated the problem by some illuminating examples and concluded that energy minimization principle can be a valid hypothesis. The investigation in this paper is more general as it is based to a certain extent on an analytical approach. %U http://arxiv.org/abs/1412.1804v1