抄録
Transient responses are theoretically given for laminar flows in tapered viscoelastic circular fluid transmission lines. The basic equations for the analysis are transfer matrices, which were derived based on a fluid line model in which the frequency-dependent effect of viscosity was taken into consideration. In the matrices, a modified version of the Voigt mechanical model is applied to the viscoelastic pipe wall model. The responses to stepwise changes in pressure or flow rate are theoretically obtained under open-end and closed-end conditions. It is confirmed that the theoretical results agree well with simulated ones, when the rate of divergence (or convergence) of the pipeline is very small.
