Assessment of Jet-Plate Interaction Noise Using the Lattice Boltzmann Method

摘要

A numerical investigation of a jet interacting with a flat plate was conducted using a LBM-VLES approach. Simulations were conducted with a round jet under a large flat plate, with jet Mach number 0.3 (Re_D = 2.6 × 10~5) and 0.5 (Re_D = 4.3 × 10~3). The aim was to observe the capabilities of the method to investigate jet installation effects. Far-field SPL data were obtained using the Ffowcs-Williams and Hawkings (FW-H) surface integral method with permeable and solid surfaces. The position of the plate relative to the nozzle was varied and the effects on the far-field noise were observed. Results showed good agreement with experimental data, up to St_D = 2. Noise data obtained with solid surfaces suggested that the plate pressure field contained the main information of the installation effect. Results highlighted the potentialities of the code for investigating the noise generation from jet-surface interaction.