New Energy Superposition Battery Principle
Superposition Principle (1) Consider flow in a tube with an arbitrary axial variation in heat input. x u(r) hydrodynamically fully-developed flow x r Dx q w ''''(x) R Energy Equation ρc pu(r) ∂T ∂x = k r ∂ ∂r „ r ∂T ∂r « Boundary conditions ∂T ∂r ˛ ˛ ˛ ˛ r=0 = 0 (symmetry) k ∂T ∂r ˛ ˛ ˛ ˛ r=R = q00 w (x ...