Japanese Aerospace Literature This Month: Propulsion and Power- Propulsion, Propellants Fluid Mechanics, and Computationai Fluid Dynamics

AIAA Journal ◽  
1989 ◽  
Vol 27 (3) ◽  
pp. 382-384
Keyword(s):  
Fluid Dynamics ◽  
Fluid Mechanics

Particle-Laden Turbulence: Progress and Perspectives

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Luca Brandt ◽  
Filippo Coletti
Keyword(s):  
Fluid Dynamics ◽  
Fluid Mechanics ◽  
Online Publication ◽  
Granular Media ◽  
Finite Size ◽  
Spherical Particles ◽  
Annual Review ◽  
Publication Date ◽  
Zero Gravity ◽  
Inertial Particles

This review is motivated by the fast progress in our understanding of the physics of particle-laden turbulence in the last decade, partly due to the tremendous advances of measurement and simulation capabilities. The focus is on spherical particles in homogeneous and canonical wall-bounded flows. The analysis of recent data indicates that conclusions drawn in zero gravity should not be extrapolated outside of this condition, and that the particle response time alone cannot completely define the dynamics of finite-size particles. Several breakthroughs have been reported, mostly separately, on the dynamics and turbulence modifications of small inertial particles in dilute conditions and of large weakly buoyant spheres. Measurements at higher concentrations, simulations fully resolving smaller particles, and theoretical tools accounting for both phases are needed to bridge this gap and allow for the exploration of the fluid dynamics of suspensions, from laminar rheology and granular media to particulate turbulence. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 54 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

COMPUTATIONAL FLUID DYNAMICS AND ITS INTEGRATION IN THE LEARNING OF FLUID MECHANICS FOR CIVIL ENGINEERS

2021 ◽  
Author(s):  
Daniel Mora-Melia ◽  
Marco Alsina ◽  
Pablo Ballesteros-Pérez ◽  
Gonzalo Pincheira-Orellana
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Fluid Mechanics ◽  
Civil Engineers

George Batchelor: a personal tribute, ten years on

2010 ◽  
Vol 663 ◽  
pp. 2-7
Author(s):  
H. K. MOFFATT
Keyword(s):  
Fluid Dynamics ◽  
Fluid Mechanics ◽  
Great Scientist ◽  
University Of Cambridge ◽  
Personal Tribute ◽  
Research Students ◽  
The University

Ten years have elapsed since the passing of George Keith Batchelor (8 March 1920–30 March 2000), formerly Professor of Fluid Dynamics at the University of Cambridge, and Founder Editor of the Journal of Fluid Mechanics. It is fitting to remind the readers of this Journal what a great scientist he was, both in respect of his own contributions to our subject, and even more in respect of his inspirational influence on generations of research students and younger colleagues, and also more widely on the international stage, on which he was a revered, if sometimes controversial, personality.

Fundamentals of fluid dynamics with an introduction to the importance of interfaces

2017 ◽  
Author(s):  
H. A. Stone
Keyword(s):  
Fluid Dynamics ◽  
Differential Equations ◽  
Fluid Mechanics ◽  
Scaling Laws ◽  
Fluid Flows ◽  
Governing Equations ◽  
Soft Interfaces ◽  
Physical Intuition ◽  
Basic Fluid ◽  
Wide Range

The topics discussed are all related to basic fluid mechanics. In these introductory notes I highlight some of the main features of fluid flows and their mathematical characterization. There is much physical intuition encapsulated in the differential equations, and one of our goals is to gain more experience (i) understanding the governing equations and various related principles of kinematics, (ii) developing intuition with approximating the equations, (iii) applying the principles to a wide range of problems, which includes (iv) being able to rationalize scaling laws and quantitative trends, often without having a detailed solution in hand. Where possible we provide examples of the ideas with ‘soft interfaces’ in mind.

Fluid Dynamics of Axial Turbomachinery: Blade- and Stage-Level Simulations and Models

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Richard D. Sandberg ◽  
Vittorio Michelassi
Keyword(s):  
Fluid Dynamics ◽  
Fluid Mechanics ◽  
Gas Turbines ◽  
High Efficiency ◽  
Annual Review ◽  
Publication Date ◽  
Complex Flow ◽  
Key Factor ◽  
Flow Phenomena ◽  
The Rich

The current generation of axial turbomachines are the culmination of decades of experience, and detailed understanding of the underlying flow physics has been a key factor for achieving high efficiency and reliability. Driven by advances in numerical methods and relentless growth in computing power, computational fluid dynamics has increasingly provided insights into the rich fluid dynamics involved and how it relates to loss generation. This article presents some of the complex flow phenomena occurring in bladed components of gas turbines and illustrates how simulations have contributed to their understanding and the challenges they pose for modeling. The interaction of key aerodynamic features with deterministic unsteadiness, caused by multiple blade rows, and stochastic unsteadiness, i.e., turbulence, is discussed. High-fidelity simulations of increasingly realistic configurations and models improved with help of machine learning promise to further grow turbomachinery performance and reliability and, thus, help fluid mechanics research have a greater industrial impact. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 54 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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