METHOD FOR CALCULATING THE CURRENT-VOLTAGE CHARACTERISTICS OF THERMIONIC ELECTRICITY-GENERATING CHANNELS WITH COMPLEX GEOMETRY

摘要

A method for performing numerical calculations of the thermo-electro-physical characteristics of an electricity generating channel with a complex geometry using the experimental databases developed at the Leipunskii Institute for Physics and Power Engineering is described. The current-voltage characteristic of the electricity-generating channel is calculated in order to predict the electro-thermo-physical characteristics of new-generation space-craft thermionic nuclear power facilities. An analytical relation for determining the current-voltage characteristic of an electricity-generating element on the basis of the average temperature of the electrodes is derived; this relation can be used to compare the output characteristics of advanced thermionic nuclear power facilities. An iterative algorithm for calculating the parameters of the electricity-generating elements and the entire channel by the grid method is developed.