Nestacionární simulace zátěžových stavů při testech během vývoje chlazení

Abstract

The master thesis deals with the development of numerical methodic for the needs of a vehicle engine cooling development. This master thesis is split into three parts. The first part is theoretical deals with the current state of knowledge of internal combustion engines‘ thermodynamics, analysis of heat contributors to the whole vehicle heat balance, fluid dynamics and heat sharing between substances. The next part is a description of numerical model building in GT-ISE software, which consists of subassemblies that represent each module of the vehicle and description of its required data that was necessary for creation of elements of each module. The third part is about calculations where heat balance calculation of internal combustion engine, calibration, verification and validation of elements and modules that influence the whole vehicle heat balance are described. In the end, the results of stationary and non-stationary driving cycles were evaluated. Moreover, an analysis of deviations and recommendations for further development of this numerical methodic were made.