Statistical characteristics of temperature pulsations within post-burnout region

The experimental results of studies of statistical characteristics of temperature pulsations in a two-phase flow after dryout in post-burnout region are reported. The following statistical characteristics were investigated: intensity, probability distribution density, auto-correlation function and spectral density. Flow temperature pulsations were measured with microthermocouples. The tube was 10 mm in inner diameter; the pressure used was 137.3 bar for mass velocities of 350,000 and 700 kg/m2s. The maximum of relative flow enthalpy in the experiments did not exceed ΔH/r = 2. (U.S.)