CONVECTION BONDS AND BOND GRAPHS

Bonds which have two effort or potential variables and one flow variable are proposed to represent the interaction of system elements involving the flow of a pure substance, particularly when that substance is compressible. The meanings of the traditional 0 and 1 junctions, the two-port RS element and the multiport C element are generalized to accommodate these bonds, and a new heat transfer element is introduced. Bilateral causality still applies to the bonds, and is readily applied to system models. Certain macro elements are introduced which expedite computation. The graphs are compatible with conventional bond graphs.