Examining Growth of Turbulence over Heated Walls in Hypersonic Flows
Abstract
Transition and subsequent growth of turbulent boundary layers in hypersonic, air-breathing engine inlets is essential to maintaining an attached flow, as well as to enhance fuel-air mixing (when fuel is injected in the inlet). It is also necessary that the flow coming into the engine is fully turbulent to avoid undesirable events such as engine unstarts that laminar flows are more prone to. This project will experimentally and numerically investigate how turbulence gets affected in a hypersonic flow over a heated object to realistically characterise conditions that may be prevalent in a hypersonic vehicle. The “heated wall” study of turbulent boundary layer growth is a novel feature of this work that will provide data to compare against DNS and other modelling studies to improve our understanding of turbulent features of interest. The project will experimentally test a flat plate model heated systematically from room temperature to over 1000 K at the University of Queensland’s T4 shock tunnel with Mach numbers ranging from 7 – 10.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 11, 2018
- Source ID
- FA95501810265
Entities
People
- Ananthanarayanan Veeraragavan
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Queensland