2010 2(4)

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   Short abstract

 

Pages:

231 - 235

Language:

RU

Ref.:

9


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2010_2(4)_44.pdf

 

 

NUMERICAL SIMULATION OF UNSTEADY CROSS-FLOW PAST A OVAL CYLINDER AT DIFFERENT REYNOLDS NUMBERS

Zhukova Yu.V.1, Terekh A.M.2, Semenyako A.V.2

1 A.V.Luikov Heat and Mass Transfer Institute of NAS of Belarus, Minsk, Belarus
2 National Technical University of Ukraine "Kyiv Polytechnic Institute", Kiev, Ukraine


Citation:

Zhukova, Yu.V., Terekh, A.M. and Semenyako, A.V., (2010) Numerical simulation of unsteady cross-flow past a oval cylinder at different Reynolds numbers, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(4), PP. 231 - 235.


Keywords:

oval cylinder; aerodynamincs; numerical investigation; cross-flow; Reynolds number


Abstracts:

Results of experimental researches of structure of an adiabatic two-phase (air-to-water) flows and heat transfer and hydraulic resistance at a monophase water flow in tubes with various tape twisting inserts are presented. The device for a heat transfer intensification at two-phase (vapor-liquid) flows (at boiling) is offered in the form of the twisted tape having ribs installed discretely on angle to an axis of a tape. Results of experimental researches of a convective heat transfer and hydraulic resistance are presented at the laminar, transitive and turbulent flows of water in pipes with spherical ledges, including with the twisted tape insert. Boundary lines of is laminar-turbulent transition are defined. Mechanisms of agency regime and design data of heat-transfer agent and intensifiers on a convective heat transfer intensification are revealed. The comparative analysis of the gained data at an intensification of a convective heat exchange with results of other authors is executed.


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