ABSTRACT

This chapter presents an overview of the verification and validation of computational fluid dynamics (CFD) simulations. The overall objective is to demonstrate the accuracy of CFD codes so that they may be used with confidence for aerodynamic simulation, and that the results be considered credible for decision-making in design. One should first understand the distinctions between a code, simulation, and model. Essentially, one implements a model into a computer code and then uses the code to perform a CFD simulation, which yields values used in engineering analysis. Accuracy and stability of the numerical computation is heavily dependent on the quality, size, and distribution of the mesh. The design fire curve describes the development of a design fire that can be used in a fire scenario. This curve can be as simple as a constant or as a simple function of time. In one simulation, a sprinklered car park with impulse ventilation system was modeled taking sprinkler physical effect into consideration.