|
|||||
|
|
AEROACOUSTIC RESPONSE OF DIFFUSERS AND BENDS: COMPARISON OF EXPERIMENTS WITH QUASI-STEADY INCOMPRESSIBLE FLOW MODELS |
|
| Institution: | 1. Tampere University of Technology, Department of Electrical Engineering, Tampere, Finland;2. Universidad Michoacana de San Nicolás de Hidalgo, Faculty of Electrical Engineering, Morelia, México;1. Department of Computational Mechanics – DMC, University of Campinas, Rua Mendeleyev 200, CEP 13.083-860, Campinas, Brazil;2. Subsea Equipment Technology, Research Center – CENPES, Petrobras, Rua Horácio Macedo 950, CEP 21.941-590, Rio de Janeiro, Brazil |
| Abstract: | Experimental results were obtained in the study of the aeroacoustic response of diffusers and abrupt expansions. An experimental study on the aeroacoustics of bends has also been carried out and shows similar results. In both cases the low-frequency aeroacoustic behaviour can be predicted by a quasi-steady flow model when the flow separation point is fixed by sharp edges in the geometry. At smooth pipe discontinuities nonlinear effects are more important and the response is essentially unsteady. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |