AN APPROXIMATE METHOD OF CALCULATING A THERMALLY INSULATED LAYER WITH ACCOUNT TAKEN OF RADIATION.
JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB
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The problem of calculating the heat field of the plate of a plate-insulator system radiating heat to the ambient medium is solved. Assuming that the thermal characteristics of the material are constant and the temperature gradient over the thickness is zero, the problem reduces to the solution of a one-dimensional equation of heat conduction with initial T T sub zero and tau zero. Veiniks approximate method is discussed, where the virtual temperature distribution over the thickness is approximated by a polynomial to find solutions for problems that cannot be solved by using exact methods. The heating process is divided into two stages the first stage, where the change in temperature field spreads over the entire thickness of the insulator, and the second stage, where heating takes place simultaneously over the entire plate thickness. Author