Details of Grant 

EPSRC Reference:	GR/S08695/01
Title:	Novel merging swirl burner design controlled by helical mixing
Principal Investigator:	Zimmerman, Professor W
Other Investigators:	Russell, Dr NV Swithenbank, Professor J
Researcher Co-Investigators:
Project Partners:
Department:	Chemical & Biological Engineering
Organisation:	University of Sheffield
Scheme:	Standard Research (Pre-FEC)
Starts:	01 April 2003	Ends:	30 September 2006	Value (£):	252,293
EPSRC Research Topic Classifications:	Combustion
EPSRC Industrial Sector Classifications:	Aerospace, Defence and Marine Chemicals Pharmaceuticals and Biotechnology No relevance to Underpinning Sectors
Related Grants:
Panel History:
Summary on Grant Application Form
Theoretical and computational studies by the principal investigator and collaborators have demonstrated:(i) an inverse cascade in helical turbulence of helical coherent structures (HCS) that transfer helicity to the largest scale available in an internal flow, term( large scale HCS. There is a critical helicity number to excite this inverse cascade that depends on the geometry.(ii) HCS have an enhanced mixing efficiency (up to 20-fold) over isotropic turbulence due to the three dimensional dispersion effect throughout the HCS augmenting concentration gradients. Unexpectedly, this enhanced mixing does not incur greater energy dissipation (it is actually least!).
Key Findings
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Potential use in non-academic contexts
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Impacts
Description This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk Summary Date Materialised
Sectors submitted by the Researcher
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Project URL:
Further Information:
Organisation Website:	http://www.shef.ac.uk