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1. |
Record Nr. |
UNINA9910734093103321 |
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Autore |
Nguyen-Schäfer Hung |
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Titolo |
Aero and vibroacoustics of automotive turbochargers / / Hung Nguyen-Schafer |
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Pubbl/distr/stampa |
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New York, : Springer, 2013 |
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ISBN |
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9783642350702 |
3642350704 |
9781299197879 |
1299197876 |
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Edizione |
[1st ed. 2013.] |
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Descrizione fisica |
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1 online resource (xv, 136 pages) : illustrations (some color) |
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Collana |
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Disciplina |
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620 |
620.2 |
621.4361 |
621.8/2 |
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Soggetti |
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Automobiles - Motors - Superchargers |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Introduction to Turbocharging -- Induced Noise Types -- Acoustic Propagation Theory -- Analyzing Root Causes of Noise -- Computational Nonlinear Rotordynamics of Turbochargers -- Subsynchronous Constant Tone -- Eigenfrequency Modifications to Reduce Constant Tone Level. |
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Sommario/riassunto |
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Aero and Vibroacoustics of Automotive Turbochargers is a topic involving aspects from the working fields of thermodynamics of turbomachinery, aerodynamics, rotordynamics, and noise propagation computation. In this broadly interdisciplinary subject, thermodynamics of turbomachinery is used to design the turbocharger and to determine its operating conditions. Aerodynamics is needed to study the compressor flow dynamics and flow instabilities of rotating stall and surge, which can produce growling and whining-type noises. Rotordynamics is necessary to study rotor unbalance and self-excited oil-whirl instabilities, which lead to whistling and constant tone-type noises in rotating floating oil-film type bearings. For the special case of turbochargers using ball bearings, some high-order harmonic and wear |
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noises also manifest in the rotor operating range. Lastly, noise propagation computation, based on Lighthill’s analogy, is required to investigate airborne noises produced by turbochargers in passenger vehicles. The content of this book is intended for advanced undergraduates, graduates in mechanical engineering, research scientists and practicing engineers who want to better understand the interactions between these working fields and the resulting impact on the interesting topic of Aero and Vibroacoustics of Automotive Turbochargers. |
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2. |
Record Nr. |
UNINA9910991171503321 |
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Autore |
Nguyen Van Hiep |
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Titolo |
Bioinspired Multifunctional Nanomaterials for Ionic Artificial Muscles / / by Van Hiep Nguyen |
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Pubbl/distr/stampa |
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Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025 |
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ISBN |
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Edizione |
[1st ed. 2025.] |
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Descrizione fisica |
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1 online resource (XVII, 108 p. 47 illus., 45 illus. in color.) |
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Collana |
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Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5061 |
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Disciplina |
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Soggetti |
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Materials |
Bionics |
Nanotechnology |
Robotics |
Bioinspired Materials |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Chapter 1.Introduction to Ionic Artificial Muscles -- Chapter 2.Cell-membrane-inspired block isomer electrolyte -- Chapter 3.Hemostasis-inspired electrolyte membrane -- Chapter 4.Calcium-metabolism-inspired Electrode -- Chapter 5.Bone-structure-inspired Electrode -- Chapter 6.Concluding Remark. |
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Sommario/riassunto |
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This book presents the development of four multifunctional |
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nanomaterials: two electrolyte membranes with high ionic conductivity and robust mechanical strength and two electrode materials with excellent electrical conductivity and high capacitance. The integration of these materials has led to a substantial improvement in the performance of ionic actuators, enabling their application in four demonstrative models: soft fingers, inchworms, dynamic tensegrity structures, and dragonflies. Therefore, this multidisciplinary book is highly relevant to a wide range of scientific fields, including materials science, ionic actuators, soft robotics, bioinspiration, and biomimetics, as well as energy storage systems such as batteries, capacitors, and fuel cells. |
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