Approximate unsteady fluid jet properties from one-dimensional theory

An unsteady fluid jet discharge may impose mechanical or thermal loads which must be predicted for appropriate design of structures in its path. Time- and space-dependent variations in jet cross-sectional area helps to determine which structures could be affected. The corresponding unsteady jet velocity determines resulting impingement or drag forces. If the jet is hot or cold relative to the surrounding fluid, structures in its path may undergo thermal stressing. A formulation is presented in this study for making reasonable predictions of time- and space-dependent fluid jet properties for use in preliminary structural design.