Predicting Flow-Induced Acoustics at Near-Stall Conditions in an Automotive Turbocharger Compressor
A Numerical Approach
Seiten
2018
|
1st ed. 2018
Springer International Publishing (Verlag)
978-3-319-72247-4 (ISBN)
Springer International Publishing (Verlag)
978-3-319-72247-4 (ISBN)
This thesis offers new insights into the fluid flow behavior of automotive centrifugal compressors operating under near-stall conditions. Firstly it discusses the validation of three-dimensional computational fluid dynamics (CFD) unsteady simulations against acoustic experimental measurements using an original procedure based on plane wave pressure decomposition. It then examines the configuration of the CFD cases, highlighting the key parameters needed for a successful calculation. Moreover, it describes both the compressor mean and unsteady flow field from best-efficiency to near-surge operating points. Lastly, it provides readers with explanations of the various phenomena that arise when the mass flow rate is reduced and the compressor is driven to poor and noisy performance. Written for students, researchers and professionals who want to improve their understanding of the complex fluid flow behavior in centrifugal compressors, the thesis offers valuable practical insights into reducing the acoustic emissions of turbochargers.
Introduction ._Methodology for experimental validation ._ In uence of tip clearance on ow behavior and noise generation.- Sensitivity of compressor noise prediction to numerical setup._ Compressor mean ow field at near-stall conditions ._ Compressor aerocoustics at near-stall conditions .- Concluding remarks .
| Erscheinungsdatum | 03.02.2018 |
|---|---|
| Reihe/Serie | Springer Theses |
| Zusatzinfo | XX, 149 p. 81 illus., 72 illus. in color. |
| Verlagsort | Cham |
| Sprache | englisch |
| Maße | 155 x 235 mm |
| Gewicht | 426 g |
| Themenwelt | Technik ► Maschinenbau |
| Schlagworte | 3D CFD Simulation • Centrifugal Compressors • Compressor Acoustic Signature • Compressor Performance • Compressor Tip Clearance Flow • Compressor Whoosh Noise • Near-surge Conditions • noise generation • Rotating Stall • StarCCM+ for Turbomachinery • Turbocharger CFD Postprocessing • Turbulence Models • URANS vs DES |
| ISBN-10 | 3-319-72247-6 / 3319722476 |
| ISBN-13 | 978-3-319-72247-4 / 9783319722474 |
| Zustand | Neuware |
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