Case study: An experimental noise reduction study of an extended flow range automotive turbocharger centrifugal compressor

Rick Dehner; Ahmet Selamet; Deb Banerjee; Pranav Sriganesh; Keith Miazgowicz; Ahsanul Karim; Anthony Morelli; Chris Tierman; Thomas Harris; Mihai Bleiziffer

doi:10.3397/1/376711

Case study: An experimental noise reduction study of an extended flow range automotive turbocharger centrifugal compressor

Noise Control Engineering Journal ◽

10.3397/1/376711 ◽

2019 ◽

Vol 67 (2) ◽

pp. 117-126 ◽

Cited By ~ 2

Author(s):

Rick Dehner ◽

Ahmet Selamet ◽

Deb Banerjee ◽

Pranav Sriganesh ◽

Keith Miazgowicz ◽

...

Keyword(s):

Noise Reduction ◽

Centrifugal Compressor ◽

Experimental Noise

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Life cycle assessment of a large-scale centrifugal compressor: A case study in China

Journal of Cleaner Production ◽

10.1016/j.jclepro.2016.08.105 ◽

2016 ◽

Vol 139 ◽

pp. 810-820 ◽

Cited By ~ 9

Author(s):

Shitong Peng ◽

Tao Li ◽

Mengmeng Dong ◽

Junli Shi ◽

Hongchao Zhang

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Centrifugal Compressor ◽

Large Scale

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The Use of Interference Diagrams to Avoid Impeller Resonance: An Application to IGV Design

Volume 4: 7th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B and C ◽

10.1115/detc2009-86080 ◽

2009 ◽

Author(s):

Marco Ferioli

Keyword(s):

Centrifugal Compressor ◽

Natural Frequencies ◽

Mode Shapes ◽

Common Source ◽

Operating Speed ◽

Element Analysis ◽

Exciting Frequency ◽

Combine Information ◽

The Impact

Interference diagrams can be used to avoid the potential excitation of a particular mode of vibration for centrifugal compressor impellers, thus reducing the risk of fatigue failures. Such diagrams are an excellent tool to combine information on impeller natural frequencies and mode shapes, excitation sources and operating speed of the machine on the same graph. Once the impeller design has been finalized in terms of aerodynamic performance, structural assessments and therefore geometry, Finite Element Analysis can be used to predict its natural frequencies and mode shapes (i.e. nodal diameters). Results can therefore be shown on a chart, together with the operating speed range of the machine. The need to plot on a single diagram this whole set of data arises from the mathematical evidence to consider the frequency of vibration together with the mode shape and the shape of the exciting force, while analyzing resonances. Typical Campbell diagrams are unable to provide this information at a glance. A common source of excitation for the first impeller of centrifugal compressors is the IGV set. Inlet Guide Vanes produce an exciting frequency that is directly proportional to the number of vanes N, where N represents also the shape of the excitation. The interference diagram can therefore be used: • to design and optimize the IGV for a new machine; • to choose between two different designs; • to evaluate the impact of a new IGV for the impeller of an existing compressor. A case study will be introduced, in order to show the application of interference diagrams to avoid potentially dangerous resonances between an IGV set and the first impeller during the re-design phase for a centrifugal compressor already in operation.

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