Results 241 to 250 of about 1,309 (281)
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Jet-wake thermal characteristics of heated turbulent jets in cross flow
1st National Fluid Dynamics Conference, 1988This paper is one in a series reporting on jets discharging to crossflowing water streams. The experiments were carried out in the 0.61-m x 1.067-m semiclosed circuit water channel at Iowa State University. Hot water was injected vertically upward from a circular pipe located near the channel bottom to simulate the turbulent heated jet.
S. A. Sherif, R. H. Pletcher
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Unsteady wake vortices in jets in cross-flow
Journal of Visualization, 2011The current flow visualization study investigates unsteady wake vortices of jets in cross-flow in order to (1) advance the understanding of their origin and characteristics and (2) explore various excitation techniques for organizing and accentuating them.
Ivana Milanovic +2 more
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On rotating jets, plumes and wakes
2021This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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Wake Transition in Coaxial Jets
1996A new flow pattern transition is observed in the near field of high Reynolds number coaxial jets. The configuration consists of a central jet of velocity u1 surrounded by an annular jet of velocity u2, and the study focuses on the limit of large velocity ratios r u = u2/u1. For moderate velocity ratios (i.e.
H. Rehab, E. Villermaux, E. J. Hopfinger
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An Experiment on Jet-Wake Vortex Interaction
37th AIAA Fluid Dynamics Conference and Exhibit, 2007The flow field produced by the interaction of two h eated jets with the wake vortices of a rectangular wing is investigated in a research-type wind tunnel using an experimental set up producing conditions representative of an aircraft in cruise flight. The flow is characterized using a 3D-LDV system and thermocouples.
Laurent Jacquin +3 more
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2019
In the foregoing chapter, we encountered boundaries of solid bodies and obstacles that are fully covered by streamlines of the flow. There is no necessity that one single streamline follows the whole boundary of an obstacle. Instead, the streamline can detach from the solid body; it is then called a free streamline.
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In the foregoing chapter, we encountered boundaries of solid bodies and obstacles that are fully covered by streamlines of the flow. There is no necessity that one single streamline follows the whole boundary of an obstacle. Instead, the streamline can detach from the solid body; it is then called a free streamline.
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Coherent structures in coflowing jets and wakes
Journal of Fluid Mechanics, 1978By applying small lateral oscillations to a glass tube from which smoke was issuing, perfectly periodic coflowing jets and wake structures were produced at Reynolds numbers of order 300-1000. These structures remained coherent over long streamwise distances and appeared to be perfectly frozen when viewed under stroboscopic light which was synchronized ...
A. E. Perry, T. T. Lim
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2009
Flow patterns developed by the inclined slot air jets, injected in a main air stream flowing at different velocities from 132.5--208 feet per second in a four0inch square duct, were studied from numerous pressure probe readings. Velocity profiles across the width of the duct at various positions were obtained from the readings on a recorder chart ...
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Flow patterns developed by the inclined slot air jets, injected in a main air stream flowing at different velocities from 132.5--208 feet per second in a four0inch square duct, were studied from numerous pressure probe readings. Velocity profiles across the width of the duct at various positions were obtained from the readings on a recorder chart ...
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Similarity in swirling wakes and jets
Journal of Fluid Mechanics, 1962Both the net linear momentum and the net angular momentum of a developing swirling flow can play important parts in determining its ultimate form. To illustrate this the turbulent wake with both axial and swirl components of mean velocity is discussed, in particular for the two limiting cases of domination by linear momentum and domination by angular ...
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Jets and Wakes in Tailored Pressure Gradient
The Physics of Fluids, 1968Similarity solutions of the boundary-layer equations representing the flow of jets in an external stream and tailored pressure gradients were obtained. These solutions apply to jets in coflowing and counterflowing streams. A number of analytical solutions not previously published were obtained.
I. Wygnanski, H. E. Fiedler
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