Hibernating Turbulence in Boundary-Layer Flows
Abstract
This proposal will focus on detecting and characterising the recently discovered phenomena of hibernating turbulence in boundary-layer flows. This may lead to ultimately transformative technology which would increase overall vehicle energy efficiency. The skin-friction drag force is a major source of fuel consumption across all major transportation modes. Hibernating turbulence is a unique form of intermittent flow behaviour, which causes the skin-friction drag force experienced by an aero- or hydrodynamic body to temporarily reduce by up to 70%. Nominally 50% of the total drag on aircraft is due to skin-friction drag, this increases to 90% for hydrodynamic vehicles such as submarines. Consequently, minimising drag by maintaining intervals of hibernating turbulence would reduce fuel consumption and, in turn, lower cost and improve vehicle performance.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 28, 2017
- Source ID
- FA95501710231
Entities
People
- Richard Whalley
Organizations
- Air Force Office of Scientific Research
- Newcastle University
- United States Air Force