Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method

Peng, Tongrui; Yao, Yufeng; Zhu, Quanmin

Abstract

This paper presents a combined CFD and CAA study to assess the slat noise emissions from a multi-element 30P30N airfoil at the 5-degree and 8-degree angle of attack, using a hybrid RANS-LES method. In this simulation, the structured mesh is used and steady-state convergence criterion is 1×10-3. The inflow Mach number is 0.17, and Reynolds number based on inflow velocity and the chord length of the airfoil is 1.8×106. It has been found that the surface static pressure coefficient distributions at both angles are in good agreement with the experiments and the predicted lift coefficients are close to the measurements calculated from steady RANS. The mean vertical velocity of unsteady flow is well compared with measurement results while some difference existing for mean streamwise velocity. Finally, the steady-state broadband noise distribution shows that slat leading edge and trailing edge are two main noise sources of slat noise.

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: 53rd 3AF International Conference on Applied Aerodynamics
• Start Date: Mar 26, 2018
• End Date: Mar 28, 2018
• Acceptance Date: Feb 19, 2018
• Deposit Date: Apr 13, 2018
• Publicly Available Date: Apr 27, 2018
• Peer Reviewed: Not Peer Reviewed
• Keywords: slat noise prediction, CFD, ICEM, hybrid RANS-LES method
• Public URL: https://uwe-repository.worktribe.com/output/871384
• Additional Information: Title of Conference or Conference Proceedings : 53rd 3AF International Conference on Applied Aerodynamics, Salon de Provence, France, 26 – 28 March 2018
• Contract Date: Apr 13, 2018