Abstract
This paper suggests a new engineering design idea by utilizing the optimality of the branch system in biology. From the viewpoint of engineering, the growth mechanisms of branch systems in biology are studied, and computer simulations by algorithm based on the design principle to obtain minimum average density are generated. By obeying the growth rules of branch system in biology, the growth of branches is depending on the local density, which is varied by local flow through the branch. Local flow can be decided by Poiseuille's law. Radii of branches obey Murray's law. The finite element model is established with Voxelcon 4.0,and the optimality of simulated branch system is validated by the finite element result of heat transfer problem.
