Turbulence Modeling Best Practice Guidelines: Standard EVMs – PART II

In Part I of "Turbulence Modeling Best Practice Guidelines: Standard EVMs" I have presented some motivation, and two of what I find as the most immediate and more pressing issues regarding turbulence modeling in general, namely, that before following and choosing any particular best practice guideline one should at least know the basics about each …

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Turbulence Modeling Best Practice Guidelines: Standard EVMs – PART I

In the following set of posts I shall present what I find as the most effective best practice guidelines to the challenge of modeling turbulence. I shall try to keep the posts as practical as I can from an engineering standpoint, and as pointed as I can towards the best practice guidelines themselves. To be …

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Some Fundamental Thoughts About Turbulence Modeling…

As far as we know, there is only one objective physical reality, but there are many ways of describing it. Usually, we refer to these ways as “theories” or sometimes "models". Ever since the days of Aristotle and his contemporaries, science has discovered many such theories or models, some may be harder to perceive but …

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Engineering Turbulence – Part II: Lifting The Wright Way!

"It's easy to explain how a rocket works, but explaining how a wing works takes a rocket scientist..." - Philippe Spalart (senior technical fellow - the Boeing company) The intention of this set of posts is to embark on a journey of connecting the dots between CFD and turbulence modeling with the phenomenological and practical …

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Engineering Turbulence – Part I: Phenomenology

"If you want to be a Millionaire, start with a billion dollars and launch a new airline ..." - Richard Branson The intention of this set of posts is to embark on a journey of connecting the dots between CFD and turbulence modeling with the phenomenological and practical concepts of engineering aerodynamics. Even though it …

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Turbulence Modeling – Near Wall Treatment

Most of nowadays CFD simulations are conducted with the Reynolds Averaging approach. Reynolds Averaged Navier-Stokes (RANS) simulation, the "working horse" of industrial CFD is based on the Reynolds decomposition according to which a flow variable is decomposed into mean and fluctuating quantities. When the decomposition is applied to Navier-Stokes equation an extra term known as the Reynolds …

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GEKO – And Then There Were Six… – PART I

"with four parameters I can fit an elephant, with five I can make him wiggle his trunk..." - John von Neumann Most of nowadays CFD simulations of engineering applications are conducted via the Reynolds Averaging approach. Reynolds-Averaged Navier-Stokes (RANS) simulation is based on the Reynolds decomposition according to which a flow variable is decomposed into …

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