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Clinical and Biomedical Engineering in the Human Nose Read chapter Read first chapter

2021 | OriginalPaper | Chapter

7. Fundamentals of Fluid Dynamics

Author : Alister J. Bates

Published in: Clinical and Biomedical Engineering in the Human Nose

Publisher: Springer Singapore

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Abstract

The purpose of CFD is to map and quantify fluid flows in space and time. CFD simulations achieve this by solving the equations that govern flow: conservation of mass; balance of momentum; and conservation of energy. This chapter describes what these equations conceptually mean and how they are derived by applying basic physics statements such as Newton’s second law and the first law of thermodynamics to fluids. Fluid flow phenomena including boundary layers, turbulence, and unsteadiness are introduced and techniques to model them via CFD simulations are discussed. Turbulence models, which allow CFD simulations to achieve accurate results without having to calculate the smallest velocity fluctuations in a flow, thereby accelerating simulations, are also discussed and the most common models used in respiratory airflow simulations are compared.

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previous chapter Computational Meshing for CFD Simulations
next chapter Clinical Implications of Nasal Airflow Simulations
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Metadata
Title
Fundamentals of Fluid Dynamics
Author
Alister J. Bates
Copyright Year
2021
Publisher
Springer Singapore
Book
Clinical and Biomedical Engineering in the Human Nose

Print ISBN: 978-981-15-6715-5

Electronic ISBN: 978-981-15-6716-2

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-981-15-6716-2_7

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