Vortices induced in a stagnation region by wakes - Their incipient formation and effects on heat transfer from cylindersHorseshoe-like vortices, induced by wakes in the stagnation region of bluff bodies, are proposed as an efficient mechanism for augmentation of convective heat transfer. The vortex 'flow module' induced by single or multiple wakes, which had not been observed previously, was first documented and the resulting flow field was studied using various visualization techniques and hot-wire anemometry. In an attempt to understand the driving force behind this flow module, the conditions at which incipient formation of the vortices occurs were investigated. Existence of such a threshold is essential and was hitherto an open question in analytical studies of stability of flow in stagnation region. Finally, effects of the flow module on heat transfer from a cylinder were measured.
Document ID
19770054441
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nagib, H. M. (Illinois Inst. of Tech. Chicago, IL, United States)
Hodson, P. R. (Illinois Institute of Technology Chicago, Ill., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1977
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 77-790
Meeting Information
Meeting: Thermophysics Conference
Location: Albuquerque, NM
Start Date: June 27, 1977
End Date: June 29, 1977
Sponsors: American Institute of Aeronautics and Astronautics