Turbulent Boundary Layer - I
Mohamed Aly Sayed
I help CFD enthusiasts overachieve | PhD in Particle Tracking & Turbulence Modeling ?? ?? | My opinions are mine
In this week's article, we cover some of the basics of both laminar and turbulent boundary layers and the challenges of accurately capturing both in computational fluid dynamics (CFD). Laminar and turbulent boundary layers are fundamental concepts in fluid mechanics and play a crucial role in many engineering applications. Understanding the differences between them and how to correctly capture them in CFD simulations is essential to ensure accurate predictions of fluid behavior, But first of all...
What "is" a boundary layer?
In fluid mechanics, a boundary layer is a thin layer of fluid that forms on a solid surface in contact with a fluid flow and experiences different flow characteristics than the fluid away from the surface. The boundary layer is characterized by a gradual transition in velocity and other fluid properties, such as temperature and concentration, from the free stream to the surface of the solid object.
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1 年I want to thank for this simple explanations which helped me a lot. is it always the case for turbulent boundary layer thickness to increase with the Reynold number?. Because for turbulent boundary layers along a flat plate channel, the boundary layer thickness decreases with increasing Reynold number
Mechanical power Engineer
1 年Simple & powerfull article; it makes the BL concept clear for me more than my university lectures did ..
PhD from International Islamic University
1 年Thanks for sharing this. This is an excellent learning source by picturing complete topics with references. Next, It is important to tell to newcomers how we use CFD to capture such flows. Please make a video lecture and start some basic boundary layer flow like Blasius (no adverse pressure gradient) and Falkner Skan (with adverse pressure gradient) and then Laminar flow along complex geometry. When this will done then move to the turbulent flow.