NSF Org:	CBET Division of Chemical, Bioengineering, Environmental, and Transport Systems
Recipient:	THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK
Initial Amendment Date:	July 19, 1990
Latest Amendment Date:	July 13, 1992
Award Number:	9057460
Award Instrument:	Continuing Grant
Program Manager:	George P. Peterson CBET  Division of Chemical, Bioengineering, Environmental, and Transport Systems ENG  Directorate for Engineering
Start Date:	September 1, 1990
End Date:	June 30, 1993 (Estimated)
Total Intended Award Amount:	$107,949.00
Total Awarded Amount to Date:	$107,949.00
Funds Obligated to Date:	FY 1990 = $29,000.00 FY 1991 = $41,799.00 FY 1992 = $37,150.00
History of Investigator:	Peyman Givi (Principal Investigator) peg10@pitt.edu
Recipient Sponsored Research Office:	SUNY at Buffalo 520 LEE ENTRANCE STE 211 AMHERST NY  US  14228-2577 (716)645-2634
Sponsor Congressional District:	26
Primary Place of Performance:	DATA NOT AVAILABLE
Primary Place of Performance Congressional District:
Unique Entity Identifier (UEI):	LMCJKRFW5R81
Parent UEI:	GMZUKXFDJMA9
NSF Program(s):	CFS-Combustion & Fire Systems, CROSS-DIRECTORATE PROGRAMS
Primary Program Source:
Program Reference Code(s):	1407, 9227
Program Element Code(s):	140700, 912000
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.041

ABSTRACT

A computer code is to be constructed to simulate three- dimensional unsteady turbulent reactive flows, based upon a spectral element algorithm which combines the accuracy of pseudospectral methods with the versatility of finite-element techniques. The large eddy simulation technique will be used, in which the subgrid turbulent motion is modeled approximately while the large scale structures are calculated directly. A single-point probability density function method will be developed for the scalar subgrid closure, and a two-equation subgrid model will be employed for the hydrodynamic closure. In a second program, the effects of compressibility on hyper- velocity three-dimensional reacting turbulent flows will be investigated using a hybrid finite difference/element pseudospectral algorithm. Several recently developed shock capturing schemes will be implemented for high Mach number flow simulations. The thorough understanding of turbulent reactive flows is essential to operate modern engines and power systems within the constraints of high efficiency and low emissions, and the next generation of supersonic aircraft poses questions which may not be answerable through traditional experimentation and development techniques. This research program will provide new tools for engineers to extract answers to many of those questions.

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