Drag reduction for swept flat plate flow

Physical Review Fluids, vol. 5

Abstract

Drag reduction in turbulent boundary layer flow via swept transversal surface waves is investigated by large-eddy simulations. For partially downstream traveling waves, a decreased friction drag reduction and positively contributing pressure drag are determined while the opposite occurs for partially upstream traveling waves. It is also shown that an amplification of the outer layer turbulence can coexist with a drag-reduced near-wall state.

Authors 2

1. Marian Albers Aachen Institute of Aerodynamics

   RWTH Aachen University

   Affiliation as printed

   Institute of Aerodynamics, RWTH Aachen University, Wüllnerstrasse 5a, 52062 Aachen, Germany

2. Wolfgang Schröder Aachen Institute of Aerodynamics JARA Center for Simulation and Data Science

   RWTH Aachen University

   Affiliation as printed

   Institute of Aerodynamics, RWTH Aachen University, Wüllnerstrasse 5a, 52062 Aachen, Germany

   JARA Center for Simulation and Data Science, RWTH Aachen University, Seffenter Weg 23, 52074 Aachen, Germany