Optical methods for studying the dynamics of vapor and liquid phase development in capillary-porous structures

Boiling coolant cooling of advanced steam turbines operating above standard supercritical temperatures and pressures has been developed and investigated. A system operating according to the heat pipe scheme has been studied, with the mass potential added to the capillary potential. The calculation of the evaporating and condensing parts is performed. Installations for optical methods of studying the dynamics of vapor and liquid phases have been developed. The initial stage of vapor bubble nucleation and the dynamics of growth and destruction processes in the capillary-porous structure using optical methods are developed. Kinograms and holographic interferograms of heat transfer processes for different wicks, thermal loads, liquid excess with calculation of internal boiling characteristics, ejection of liquid droplets from the structure are presented. The possibility of separating the total energy at vapor nucleation is an important task of erosion and cavitation control. Simulation of an emergency situation by reducing the coolant flow rate to its minimum value is shown.
EDN: HNZJIV, https://elibrary/hnzjiv

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