Windage correlations for flows in rotor-stator cavities

In the design phases of the propulsion system, tools based on correlations are often used to meet the needs of design offices on various issues (permeability, exchange coefficients). These correlations are, in part, the result of experimental studies carried out 40 years ago and need to be updated. Safran Aircraft Engines (SAE) technical management has decided to carry out capitalization, documentation and correlation update work. This internship, which falls within this perspective, focuses on the correlations used for the aerothermal modelling of propulsion systems. Within the methods and tools department of the direction dedicated to the integration of the propulsion system, the mission is to evaluate the performance of commonly used modelling methods, to establish their limits and to propose solutions for improvement. The final objective is to understand the range of validity of the correlations to cover future needs. In order to meet the need, a tool based on 2D simulations is developed. This tool is designed on the basis of a parametric geometry, allowing the creation of a CFD design of experiments (DOE) whose observables will be compared to the results of the SAE correlations.