2013 1(12)

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Pages:

3 - 6

Language:

RU

Ref.:

5


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2013_1(12)_1.pdf

 

 

HEAT TRANSFER AND AERODYNAMIC OF SINGLE TUBES OF FLAT-OVAL PROFILE

Kondratyuk V.A.1, Semenyako A.V.1, Terekh A.M.1, Rudenko A.I.1, Zhukova Y.V.2

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


Citation:

Kondratyuk V.A. Heat transfer and aerodynamic of single tubes of flat-oval profile / V.A. Kondratyuk, A.V. Semenyako, A.M. Terekh, A.I. Rudenko, Y.V. Zhukova // Modern Science: Researches, Ideas, Results, Technologies. - Dnepropetrovsk: SPIC "Triacon". - 2013. - Iss. #1(12). - PP. 3 - 6


Keywords:

single flat-oval tube; heat transfer; aerodynamic drag; calculation


Abstracts:

The paper presents the experimental investigation on convective heat transfer and drag of single round and flat-oval tubes over the range of the relative tube diameter ratio d2/d1 from 1 (round tube) to 2.625. The data obtained is indicative of the fact that heat transfer of round tubes is, on the average, by (16-35) % higher than that of flat-oval ones depending on d2/d1. Drag of single flat-oval tube is by a factor of 1.8-2 less as against that of single round one. For the first time in the Ukraine, the generalized empirical relations are obtained for determination of heat transfer coefficient and drag of single flat-oval tubes that take into account the influence of the relative profile extension on heat transfer and drag.


References:

  1. Антуфьев В.М. Эффективность различных форм конвективных поверхностей нагрева/ В.М. Антуфьев - М.Л.: Энергия, 1966. - 184 с.

  2. Zhukauskas, A. and Ziugzda, J. (1979). Teplootdacha cylindra v poperechnom potoke zhidkosti [Heat transfer of cylinder in cross flow of fluid], Mokslas, Vilnius, USSR.

  3. Zhukauskas, A. (1982). Konvektivnyu perenos v teploobmennikakh [A conveсtive transfer in heat exchangers], Science, Moskow, USSR.

  4. Dyban, E.P. and Epick, E. Ya. (1985). Teplomassoobmen i gidrodinamika turbulizirovannykh potokov [Heat and mass transfer and hydrodynamics of turbulence streams], Naukova dumka, Kiev, USSR.

  5. Dyban, E.P. and Yushina, L.E. (1982). "Heat transfer of cylinder of eventual length", Promyshlennaya teplotekhnika, Vol.4, no.5, pp.3-8.

 

 
     

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