Study on Flow Reattachment Length

DNS Study on Small Length Scale in Turbulent Flow

According to our observation of turbulence generation, all small length scales are generated by shear layer instability. The size of small vortices should be determined by the smallest stable shear layer, e.g. smallest shear layer like laminar sub-layer in the wall bounded flow. This paper provides a new estimation of the smallest length scale by using the shear layer stability analysis, which ...

Steady Incompressible Magnetohydrodynamic Flow Near a Point of Reattachment

This Article is brought to you for free and open access by the Mathematics & Statistics at ODU Digital Commons. It has been accepted for inclusion in Mathematics & Statistics Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Dorrepaal, J. M. and Moosavizadeh, S., "Steady Incompressible Mag...

Pressure Distributions illustrating _ Flow Reattachment behind a Forward Mounted Flap

Boundary Layer Separation and Reattachment Detection on Airfoils by Thermal Flow Sensors

A sensor concept for detection of boundary layer separation (flow separation, stall) and reattachment on airfoils is introduced in this paper. Boundary layer separation and reattachment are phenomena of fluid mechanics showing characteristics of extinction and even inversion of the flow velocity on an overflowed surface. The flow sensor used in this work is able to measure the flow velocity in ...

Multivariable Closed-loop Control of the Reattachment Length Downstream of a Backward-facing Step

Active control of separated flows has become a major challenge in recent years. Whereas most of the work published so far is based on simulation studies this paper gives an example of a successful application of a multivariable closedloop flow control in wind tunnel experiments. A robust H∞-controller is used to control the spanwise reattachment length downstream of a benchmark problem, a so-ca...