Limiting state of a surface under thermal loading
Abstract
An analysis is carried out to determine heat fluxes and thermal stresses produced in rocks and also in the metal walls of combustion chambers and nozzles by a high-temperature supersonic gas jet. It is shown that the fracture mechanism of metals is essentially different from that of rocks; some of their thermomechanical properties are also different. Nevertheless, based on a solution for the heat conductivity equation with boundary conditions of the second kind, an analogy is established between the behaviors of these materials, and expressions are obtained which make it possible to predict and prevent the limiting states of vapor-generating surfaces and to select optimal thermal loads for fracturing rocks.
- Publication:
-
Teplofizika Vysokikh Temperatur
- Pub Date:
- October 1991
- Bibcode:
- 1991TepVT..29..923P
- Keywords:
-
- Fracture Mechanics;
- Heat Flux;
- High Temperature Gases;
- Supersonic Nozzles;
- Thermal Stresses;
- Wall Temperature;
- Combustion Chambers;
- Gas Jets;
- High Temperature Environments;
- Thermal Conductivity;
- Thermoelasticity;
- Fluid Mechanics and Heat Transfer