Abstract
Approximate turbulence energy dissipation time-scaling for the subsonic steam-water two-phase flows has been investigated using a dedicated experimental facility. Steam and water have been injected from both sides using two propellers inside the two conduits in the experimental rig. The capability of the system has been ascertained for the equation between the injected and the dissipated energy. The effect of the rise in the frequency of the injected energy has been found dependent on the amplitude and phase shift of the angular velocities of the propellers and the local velocities. The time-scale for turbulence energy dissipation has been calculated from the time-averaged normalized response amplitudes of the injected energy and the local velocities. It has found to be equal to the crossover limit of the frequency and the difference between the maxima in the response amplitude of the injected energy. The approximate time-scale for the steam-water two-phase flows with the given operating conditions has found to be lies in between 0.115 and 0.116 s for the given subsonic two-phase flows.