Coherent Structures in Turbulent Flows
{'Code': '07020000', 'Directorate': {'LongName': 'Directorate For Engineering'}, 'Division': {'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
{'SignBlockName': 'HUSEYIN A. SEHITOGLU'}
The proposed research will further develop our understanding of the             dynamics of coherent structures in turbulent flows.  In particular, it is       proposed to analyze the evolution of a pair of structures, aligned with         the stream direction and parallel to a neighboring wall, of infinite            extent in the stream direction and containing streamwise vorticity of           opposite signs (a counter-rotating pair).  The analysis will include the        effects of viscosity throughout the whole flow field, and will thus be          valid for weakly rotating structures as well as structures with large           circulation.  The proposed work will give an indication of the importance       of neighboring walls and structures in the instability mechanism.               Accurate modeling of these instabilities will lead to a better                  understanding of the laminar-turbulent transition and  of mixing                processes in fully turbulent flows.  This is likely to have direct              application in areas of engineering interest such as heat transfer and          turbulent drag reduction.
{'FirstName': 'C. Frederick', 'LastName': 'Pearson', 'EmailAddress': None, 'StartDate': '08/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Massachusetts Institute of Technology', 'CityName': 'Cambridge', 'ZipCode': '021394301', 'PhoneNumber': '6172531000', 'StreetAddress': '77 MASSACHUSETTS AVE', 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA'}
{'Code': '1443', 'Text': 'FLUID DYNAMICS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8703640.xml'}