Anzeige
Erschienen in:
2018 | OriginalPaper | Buchkapitel
Comparative Investigation of Turbulence Modeling in Counterflowing Jet Predictions
verfasst von : Amani Amamou, Nejla Mahjoub Saïd, Philippe Bournot, Georges Le Palec
Erschienen in: Design and Modeling of Mechanical Systems—III
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
In this chapter, a comparison between a number of turbulent models is done in order to investigate turbulence modeling in a turbulent round jet flowing into a counterflow stream. For this purpose, three turbulence closure models are tested: Standard k-ε model, k-ε RNG model, and RSM model. The studied cases of jet-to-counterflow velocity ratios are ranging between R = 3 and R = 15. Velocity and concentration fields are predicted through the centerline velocity and dilution decay along the downstream jet axis. Predicted results are compared with available experimental data from the literature. It is found that the three tested models behave in a similar way in the first region, however, in the further region, a difference between curves from different models appears. This discrepancy seems to depend on the jet-to-current velocity ratio. The k-ε models are found to underestimate the experimental data, while the second-order closure model RSM is found to be the best model to predict the jet diffusion.