...Alberto Broatch; Roberto Navarro; Jorge García-Tíscar; Ferran Roig Small centrifugal compressors are employed to boost automotive internal combustion engines or hydrogen fuel cells, amongst other applications. In many scopes, the overall intensity and quality of noise emission is a major concern...

... forcing is introduced. First, all experiments are performed without noise, as well as at the maximum noise intensity. We observe that the mode nature that dominates in the presence of intense noise may be far from the one observed in noise-free conditions. To better understand the effect of noise...

.... The results of the works of Broatch et al. [ 42 ] and Navarro [ 3 ] thus concluded that the use of URANS for the prediction of aeroacoustic noise can be used despite its fundamental unsuitability. On the other hand, Navarro [ 3 ] showed that URANS is more sensitive to spatial discretization refinement than...

... was conducted to obtain the compressor intake noise spectrum under two different conditions: the turbocharger directly connected to the substitution duct and to the intake silencer, respectively. Then, the hybrid numerical method was introduced to predict the intake noise propagation. The compressor unsteady...

... the impact of the heat sink technology on the performance and cost of combined cycle power plants. Cogeneration applications and cycling plant operations are also considered. For each proposed option, the performance, relative costs, and noise issues will be presented. Contributed by the International...

...G. T. Zheng; A. Y. T. Leung An analysis procedure, using the time-frequency distribution, has been developed for the analysis of internal combustion engine noise signals. It provides an approach making use of advantages of both the linear time-frequency distribution and the bilinear time-frequency...