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:	Swithenbank, Professor J Russell, Dr NV
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!).
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Organisation Website:	http://www.shef.ac.uk