An Experiment on Unsteady Flow Type in Parallel Multi-channel Test Element

An experiment on unsteady flow type in a parallel multi-channel test element was conducted. The test element was composed of seven heat transfer tubes. The results shew that: the unsteady flow types mainly include density-wave oscillation irregularly oscillation and thermo-dynamics oscillation, which are apparently different from the oscillation characteristics of single-channel and double-channel test elements.