title: Single velocity-component modeling of leading edge turbulence interaction noise.
abstract: A computational aeroacoustics approach is used to predict leading edge turbulence interaction noise for real airfoils. One-component (transverse), two-component (transverse and streamwise), and three-component (transverse, streamwise, and spanwise) synthesized turbulence disturbances are modeled instead of harmonic transverse gusts, to which previous computational studies of leading edge noise have often been confined. The effects of the inclusion of streamwise and spanwise disturbances on the noise are assessed. It is shown that accurate noise predictions can be made by modeling only transverse disturbances which reduces the computational expense of simulations. The accuracy of using only transverse disturbances is assessed for symmetric and cambered airfoils, and also for airfoils at non-zero angle of attack.
authors.affiliation: Aeronautics, Astronautics, and Computational Engineering, Faculty of Engineering and the Environment, University of Southampton, Hampshire SO16 7QF, United Kingdom.
authors.forename: J
authors.initials: J
authors.lastname: Gill
authors.affiliation: Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong Special Administrative Region, China.
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Institute of Sound and Vibration Research, University of Southampton, Hampshire SO17 1BJ, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: Joseph