Relaminarising fully turbulent pipe flow

Song B, Avila M, Hof B (2013)

Publication Type: Conference contribution

Publication year: 2013

Publisher: Zakon Group LLC

Conference Proceedings Title: ETC 2013 - 14th European Turbulence Conference

Event location: Lyon FR

Abstract

We locally applied a control technique to relaminarise fully turbulent pipe flow at Reynolds numbers of up to 20,000. Downstream of the control point the flow remains laminar because of the linear stability of the basic flow and consequentely the drag is reduced substantially. At Re=20000 the pressure drop is reduced by an order of magnitude. We also applied a closely related control mechanism in experiments and managed to relmainarise turbulence at Reynolds number 6000 and the drag dropped by a factor of more than 3. The principal underlying the control scheme in experiments and simulations is closely connected to the self sustaining mechnism of wall bouned turbulence.

Authors with CRIS profile

Marc Avila Canellas Professur für Simulation in der Nano- und Mikrofluidmechanik

Involved external institutions

Max-Planck-Institut für Dynamik und Selbstorganisation / Max Planck Institute for Dynamics and Self-Organization DE Germany (DE)

How to cite

APA:

Song, B., Avila, M., & Hof, B. (2013). Relaminarising fully turbulent pipe flow. In ETC 2013 - 14th European Turbulence Conference. Lyon, FR: Zakon Group LLC.

MLA:

Song, Baofang, Marc Avila, and Björn Hof. "Relaminarising fully turbulent pipe flow." Proceedings of the 14th European Turbulence Conference, ETC 2013, Lyon Zakon Group LLC, 2013.

BibTeX: Download