The performance of a prospective candidate vertical axis wind turbine airfoil S1223 has been investigated at Reynolds numbers of 55,000, 75,000, and 100,000. The airfoil was tested at angles of attack ...

Renewable Energy (2024). [3] Experimental investigation of typical surface treatment effect on velocity fluctuations in turbulent flow around an airfoil. Chinese Journal of Aeronautics (2023).

In laminar airfoils, however, this drag reduction occurs only in a limited flight range, i.e. for certain flow velocities and angles of attack. If this range is left, laminar conservation fails and ...

The book “Turbulent Flow and Boundary Layer Theory: Selected Topics and Solved Problems ” is focused on the outgrowth of our several years of teaching postgraduate courses in mechanical ...

Discover the fundamental concepts of laminar and turbulent flow, which are crucial in understanding fluid dynamics. These two types of flow define how liquids and gases move in various systems ...

There are two main types of fluid flow - laminar flow, in which the fluid flows smoothly in layers, and turbulent flow, which is characterised by chaotic motion and large amounts of mixing. In ...

The skin of fast-swimming sharks exhibits riblet structures aligned in the direction of flow that are known to reduce skin friction drag in the turbulent-flow regime. Structures have been fabricated ...

Natural laminar flow (NLF) airfoils are key to achieving optimum performance and fuel efficiency in many vintage and current production turbine-powered business aircraft. NLF is not a new discovery.

High-performance airfoils behave differently.Patrick Veillette, Ph.D. Upon his retirement as a non-routine flight operations captain from a fractional operator in 2015, Dr. Veillette had ...