Bluff body drag manipulation using pulsed jets and Coanda effect
نویسندگان
چکیده
منابع مشابه
Drag and wake modification of axisymmetric bluff bodies using Coanda blowing
This work investigates the ability of Coanda jet blowing to modify the base pressure of a cylindrical body aligned axially in a flow, and thereby, produce overall drag reduction. It is found that blowing through one or two slot jets concentric to the outer body circumference can significantly influence the entire base flow region. The recirculating wake is eliminated and is replaced by freestre...
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We compute the time average of the drag in two benchmark bluff body problems: a surface mounted cube at Reynolds number 40000, and a square cylinder at Reynolds number 22000, using Adaptive DNS/LES. In Adaptive DNS/LES the Galerkin least-squares finite element method is used, with adaptive mesh refinement until a given stopping criterion is satisfied. Both the mesh refinement criterion and the ...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2016
ISSN: 0022-1120,1469-7645
DOI: 10.1017/jfm.2016.508