Computations of cooler discharge from heat-stressed channels
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2016, Vol 2, Issue 2
Abstract
The fundamentals of a procedure for a discharge of a two-phase heat carrier from the drain channels of heat exchangers that heat up to the temperatures exceeding the boiling point of the heat carrier are presented. The procedure considers a state of aggregation of the heat carrier and a configuration of the drain hole when dam-aging the drain holes. The parametric analysis determining the form of the drain hole is carried out by the analyt-ical formula that approximate the tabular data with a high degree of accuracy. The procedure was used for a numerical study of the thermohydrodynamic parameters of the cooler while draining the heat-stressed cooling channels of the specific liquid-rocket engine. The study results demonstrated that the procedure reflects accurately the physic processes through a cut-off drain cavity of the oxidizer passage with engine stopping. The time characteristics derived are close to the characteristics measured during the flight tests of a simulated object. The method of division of a computational domain and the major computational elements for digitizing a simulated object can simulate any heat exchanger. The procedure can be used to compute the discharge of a two-phase fluid through heat exchangers for a wide range of the power plants with a various degree of complexity.
Authors and Affiliations
Ye. Tokareva
Keywords
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