Regenerator Characterization under Oscillating Flow and Pulsating Pressure

摘要: An experimental apparatus has been developed to investigate the thermal and hydrodynamic characteristics of regenerators. Instantaneous gas temperature, pulsating pressure mass flow rate have measured at both ends regenerator. First, drop were investigated by comparing numerical simulations with data. When frequency was 4.6 Hz, time variation predicted quite well calculations based on conventional steady-flow friction factors. At 60 Hz operation, amplitude underestimated when became high. Unlike drop, phase angle poorly factor Hz. Second, ineffectiveness regenerator obtained from data for various cold-end temperatures. For low temperatures increased. The main reason this increase appears be a decrease in interstitial heat transfer coefficient caused reduced conductivity