DEVELOPMENT OF A COMBUSTION CHAMBER DESIGN METHODOLOGY AND AUTOMATION OF THE DESIGN PROCESS

摘要

The design of state-of-the-art low emission combustion chambers is based on a multitude of design rules. To use the know-how incorporated in these design rules more effectively, an automated design methodology is developed within the European project INTELLECT DM. (Integrated Lean Low Emission Combustion Design Methodology). By automating the combustor design process, the generation of a new preliminary combustion chamber design can be done within hours, while current development times for a preliminary combustor layout are in the range of weeks. Hence the market demands for faster product development can be met, ensuring higher accuracy of the design at the same time. The paper presented here describes the methodology used to draft a new preliminary combustion chamber. Due to the nonlinear interdependence of the different parameters and rules specifying the combustor design, the layout has to be done within an iterative process. A description of the key parameters, rules and the data link to the parametric CAD model is part of this paper. The iteration loop is closed by utilizing the parametric CAD model as basis of an automatic grid generation and CFD analysis. Resting upon the experience from former combustor design campaigns, the CFD results are judged and design rules are adapted if necessary.