RESEARCH AND COMPUTATIONAL MODELING OF HEAT-REMOVING PROPERTIES OF THE RADIATOR EXTENDED SURFACE
In this work the research of heat-removing properties of extended surfaces areas, for example, finned and needle radiators, for assessment of efficiency of thermal field and heat extraction distribution is described. Also the description of the carried-out computational modeling is provided in the Fluent processor of the final and element analysis universal program system Ansys. The relevance of the selected subject is confirmed by the fact that one of the most important and difficult tasks arising when developing the electronic equipment is a withdrawal of heat generated by it. At a current steady trend in reduction of dimensions of electronic devices this problem does not disappear, and on the contrary, becomes more and more sharp, and that is stronger, than device high power less its physical volume, and not only the efficiency of heat extraction, but also dimensions and, of course, reliability of electronic devices operation depends on constructions of heat-removing elements. Applicable, for example, to the electronic equipment, a source of thermal power is heatterminated element. In that case when heat conductivity of the environment is applied to normalization of its thermal mode heat sinks (radiators) insufficiently - heat-removing constructions from metal with big coefficient of heat conductivity (copper, aluminum) as the heat conductivity coefficient in metals is higher. In work the conclusion is drawn that for a solution of a complex problem of efficiency assessment in the heat sink for the purpose of decrease in temperature of heatterminated element, it is necessary to use an electrothermal analogy.