Abstract
To reliably determine the characteristics of cooled turbines in CFD simulation, it is necessary to take into account the inter-action of film cooling jets with the main flow. For a correct description of such processes, it is necessary to refine the grid of finite volume mesh, which requires significant resources for the calculation and high qualification of the engineer. An attempt to simplify the model reduces the reliability of the results obtained. There are no systematic recommendations in the available publications on the choice of settings for numerical models of film-cooled turbines. This paper presents results aimed at finding optimal settings for numerical models that allow accurate and cost-effective simulation of the workflow in cooled film-cooled turbines. As a result, practical recommendations were obtained on the choice of mesh parameters and turbulence models for such problems. – the value of y+ is not more than 2; – number of elements in the near-wall layer: at least 20; – cell growth factor in the near-wall layer: not less than 1.2. The use of these recommendations will make it possible to obtain results close to real ones while reducing the required time and computational costs.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call