2D-PIV Measurement in an elliptic Jet with Co-flow
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
2D-PIV Measurement in an elliptic Jet with Co-flow
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| Creator |
Sudhakar, S
Suriyanarayanan, P Ramesh, G |
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| Subject |
Aerodynamics
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| Description |
The near field flow of an elliptic jet in the
presence of co-flow has been studied experimentally
using a 2D PIV system. Measurements were carried
out for two velocity ratios of 0.3 and 1.5 keeping the
inner jet velocity constant. Mean velocity, turbulence
intensity and Vorticity in the major and minor plane
of the inner elliptic jet were obtained from average of
1500 instantaneous velocity fields. The results from
PIV measurements showed a few features of the near
field development viz; increase in the inner core
length, reduction in the inner shear layer growth in
the case of velocity ratio of 0.3; at velocity ratio 0.3
the inner and outer vortical structures have the same
sense of rotation where as at velocity ratio 1.5 the
inner structure have an opposite sense of rotation to
that of outer structure. The absolute value of the
velocity jump across shear layer is a dominating
factor in the development of the inner jet and for the
same reason the differential growth rate observed
between the major and minor plane of the single jet is
absent in the case of the elliptic jet in co-flow.
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| Type |
Conference or Workshop Item
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://nal-ir.nal.res.in/9149/1/Conf_ACFM13_Coax.pdf
Sudhakar, S and Suriyanarayanan, P and Ramesh, G 2D-PIV Measurement in an elliptic Jet with Co-flow. In: 13th Asian Congress of Fluid Mechanics (ACFM), 17-21 December 2010, Dhaka, Bangladesh. |
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| Relation |
http://nal-ir.nal.res.in/9149/
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