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This textbook covers Turbulence in Fluids and its intricate modeling. Authored with a focus on postgraduate teaching and advanced undergraduate courses, this book delves into the multifaceted nature of turbulent flows, characterized by unpredictable fluctuations in speed, pressure, and temperature. Addressing the challenges posed by these fluctuations, the text navigates through essential topics, including the theoretical foundations and prominent approach techniques for modeling turbulence in fluid flows. From the introduction of turbulent flows to the mathematical modeling for fluid dynamics, instabilities in laminar flows, and the transition to turbulence, the book meticulously covers the theoretical aspects of turbulence. It provides in-depth discussions on homogeneous and isotropic turbulence, equations for turbulent flows, and the closure problem, emphasizing the author's pursuit of simplifications in the analysis, crucial from physical, mathematical, and computational perspectives. The book unfolds with a detailed exploration of URANS (Unsteady Reynolds-Averaged Navier-Stokes) methodology and closing models, extending to hybrid closure models such as URANS-URANS and URANS-LES (Large Eddy Simulation) methodologies. Aiming to facilitate a profound understanding of turbulence, this book offers a valuable resource for those seeking to grasp the complexities of fluid dynamics and turbulence modeling.
List of contents
Introduction to turbulent flows.- Mathematical modeling for fluid dynamics.- Instabilities in laminar flows.- Transition to turbulence.- Homogeneous and isotropic turbulence.- Equations for turbulent flows and the closure problem.- URANS methodology and closing models.- URANS Closing Models with zero balance equation.- URANS closure models with one or more balance equations.- Sub-Grid Closure Models for the LES Methodology.- URANS-URANS and LES-URANS hybrid closure models.
About the author
Aristeu da Silveira Neto is a professor at the Federal University of Uberlândia-UFU. He graduated in Mechanical Engineering from the University of Brasília-UnB, in 1983. He received a master's degree in Mechanical Engineering from the Federal University of Santa Catarina, having completed it in 1985. He worked at the company Consul S.A., from 1984 to 1985. He joined UFU in 1985 to dedicate himself to an academic career. He received a PhD in Engineering from the Polytechnic Institute of Grenoble – INPG – France, from 1988 to 1991. While a PhD student, he received an award for overcoming a challenge proposed by a company that manufactures flow measurement systems. He received six other awards during his research and teaching career. He works as an undergraduate and postgraduate professor at the Faculty of Mechanical Engineering – FEMEC-UFU, having throughout his teaching career, until 2019, supervised more than 70 postgraduate students and more than 50 undergraduate students in scientific initiation and completion work course, on topics related to Fluid Mechanics. He taught the Turbulent Flows course at dozens of Brazilian universities and companies. Positions held: Member of the Board of the Postgraduate Course in Mechanical Engineering at UFU, for several terms; Associate Editor of the Brazilian Journal of Mechanical Engineering and Sciences; and Regional Secretary of the Brazilian Association of Mechanical Engineering and Sciences–ABCM; Reviewer of several scientific dissemination magazines and research funding agencies in Brazil. He participated in the organization of two editions of the Brazilian Congress of Engineering and Mechanical Sciences-COBEM and in the organization of four editions of the Brazilian School of Transition and Turbulence-EPTT. Published 66 full articles in journals. Published 250 articles in conferences. He wrote and published two other books on Turbulent Flows and published 7 book chapters in the same scientific area. He won 3 awardsin related areas.
Summary
This textbook covers Turbulence in Fluids and its intricate modeling. Authored with a focus on postgraduate teaching and advanced undergraduate courses, this book delves into the multifaceted nature of turbulent flows, characterized by unpredictable fluctuations in speed, pressure, and temperature. Addressing the challenges posed by these fluctuations, the text navigates through essential topics, including the theoretical foundations and prominent approach techniques for modeling turbulence in fluid flows. From the introduction of turbulent flows to the mathematical modeling for fluid dynamics, instabilities in laminar flows, and the transition to turbulence, the book meticulously covers the theoretical aspects of turbulence. It provides in-depth discussions on homogeneous and isotropic turbulence, equations for turbulent flows, and the closure problem, emphasizing the author's pursuit of simplifications in the analysis, crucial from physical, mathematical, and computational perspectives. The book unfolds with a detailed exploration of URANS (Unsteady Reynolds-Averaged Navier-Stokes) methodology and closing models, extending to hybrid closure models such as URANS-URANS and URANS-LES (Large Eddy Simulation) methodologies. Aiming to facilitate a profound understanding of turbulence, this book offers a valuable resource for those seeking to grasp the complexities of fluid dynamics and turbulence modeling.
