Radiation Heat Transfer and Thermal Protection of Air-Gas Channel of Gas Dynamic Plant

The working capacity of high-temperature devices is mostly defined by temperature regimes limited by thermostability of structural materials. One of the fundamental problems, which we discuss in this article, is developing the effective thermal protection systems of heat-stressed constructional elements. In some high-temperature gas dynamic devices the working capacity of air-gas channel is provided by heat-resistant inorganic compounds or ceramic composites with working temperature 2000...2500 K. In this regard, one of the thermal protection methods of constructional elements, which are coupled thermally with air-gas channel considering limitations on using active methods of their thermal protection (like regenerative cooling), is radiation thermal protection method. In current paper we discuss the schemes, algorithms and calculation examples of radiation and convection heat transfer in thermal protection system using radiation shields

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