System-level analysis of chilled water systems aboard naval ships

A thermal management simulation tool is required to rapidly and accurately evaluate and mitigate the adverse effects of increased heat loads in the initial stages of design in all-electric ships. By reducing the dimension of Navier-Stokes and energy equations, we have developed one-dimensional partial differential equation models that simulate time-dependent hydrodynamics and heat transport in a piping network system. Besides the steady-state response, the computational model enables us to predict the transient behavior of the cooling system when the operating conditions are time-variant. As a demonstration case, we have performed a thermal analysis on a realistic naval ship.