The interaction between the heat flux and fluid flow of an engine compartment fire and the windshield of a post-collision passenger vehicle has been studied using analytical methods. A computational fluid dynamics model of this scenario has been developed with TASCflow using a turbulent, reacting, multi-component fluid flow in a multi-grid domain with conjugate heat transfer objects. A group of computer programs have also been created to automate the grid generation and model construction processes. Calculation tools have also been developed using aspects of fire dynamics for the purpose of making comparisons to the results of CFD modeling as well as experimental measurements. A framework has been established for the modeling and validation of the windshield problem using the tools developed in this study.