A method was developed for prediction of the acoustic characteristics of resonant liner samples based on numerical simulation of physical processes in a normal incidence interferometer. Numerical simulation was performed based on direct solution of the non-stationary compressible Navier-Stokes equations in a three-dimensional formulation. The studies were carried out for full-scale multilayer samples of honeycomb acoustic liners with geometric characteristics close to those actually used in aircraft engines. The results of computations were compared with results of prediction based on semiempirical model and with results of natural experiments on normal incidence interferometer. It was revealed that the acoustic characteristics obtained by numerical simulation are in better agreement with the results of natural experiments than those determined by semiempirical model.
Comparison of acoustic characteristics of resonant liner samples at normal incidence of waves based on semiempirical model, natural experiment and numerical simulation
INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2020) ; 2020 ; Novosibirsk, Russia
AIP Conference Proceedings ; 2351 , 1
2021-05-24
9 pages
Conference paper
Electronic Resource
English
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