Global Nuclear Safety
National Research Nuclear University "MEPhI"
online version: ISSN 2499-9733
print version: ISSN 2305-414Х
2017-4(25)
Design, manufacturing and commissioning of nuclear industry equipment
| Article Name | Hypothesis Substantiation of Laminar Current Transition to Turbulent during Mixed Liquid Convection in Vertical Channels |
|---|---|
| Authors | V.K. Semenov, A.A. Beliakov |
| Address | Ivanovo State Power University, |
| Abstract | The paper offers and justifies the hypothesis of the transition of a slow steady-state laminar liquid flow into a turbulent one during its ascending motion along a vertical unequally heated surface under conditions of mixed convection. It analyzes the nature of the driving forces and the role of the pressure force at different stages of liquid heating. It is shown that this transition is due to the origin of the wakeful flow and the disruption of the stationarity conditions. The critical value of the convective parameter and the place of turbulence generation are determined by the method of integral relations. |
| Keywords | ascending movement of the liquid, mixed convection, laminar current, criteria of transition of the laminar to turbulent current |
| Language | Russian |
| References | [1] Ostroumov G.A. Svobodnaya konvekciya v usloviyah vnutrennei' zadachi. M. Pub. Gostehizdat, 1952. (In Russian) [2] Lykov A. V., Aleksashenko A. A., Aleksashenko V. A.. Sopryazhennye zadachi konvektivnogo teploobmena. Minsk. Pub. Nauka i tehnika, 1971. (In Russian) [3] Gebhart B. Svobodno konvektivnye techeniya, teplo- i massoobmen. M. Pub. Mir, 1991. (In Russian) [4] Gusev S.E., SHklover G.G. Svobodnokonvektivnyi' teploobmen pri vneshnem obtekanii tel. M. Pub. JEnergoatomizdat, 1992. (In Russian) [5] Kutateladze S. S., A. G. Kirdyashkin, V. P. Ivakin. Turbulentnaya estestvennaya konvekciya vertikal'noi' izotermicheskoi' plastiny — «Dokl. AN SSSR», 1974, t. 21, №6, p. 1270. (In Russian) [6] Dropkin D., Somerskei'lz E. Teplootdacha putem estestvennoi' konvekcii v zhidkostyah, ogranichennyh dvumya parallel'nymi ploskimi poverhnostyami, kotorye raspolagayutsya pod razlichnymi uglami naklona k gorizontali. — «Tr. amer. ob-va inzh.-meh., ser. S. Teploperedacha», 1965, № 1, p. 94. (In Russian) [7] Dropkin D., Somerskei'lz E. Teplootdacha putem estestvennoi' konvekcii v zhidkostyah, ogranichennyh dvumya parallel'nymi ploskimi poverhnostyami, kotorye raspolagayutsya pod razlichnymi uglami naklona k gorizontali.— «Tr. amer. ob-va inzh.-meh., ser. S. Teploperedacha», 1965, № 1, p. 94. (In Russian) [8] Merrikh A. A., Lage J. L. Natural convection in an enclosure with disconnected and conducting solid blocks // Intern. J. Heat Mass Transfer. 2005 V. 48, N 7 P. 1361–1372. [9] Kirillov P.L., Bogoslovskaja G.P. Teplomassobmen v jadernykh ehnergeticheskikh ustanovkakh [Heat-Energy in Nuclear Power Plants]. M. Pub. IzdAT, 2008. (in Russian) [10] Kirillov P.L., Bobkov V.P., Zhukov A.V., Jurjev V.S. Spravochnik po teplogidravlicheskim raschetam v jadernojj ehnergetike [Handbook on Thermal Hydraulic Calculations in Nuclear Power Engineering]. Vol. 1. M. IzdAT, 2010. (in Russian) [11] Petukhov B.S., Genin L.G., Kovalev S.A., Solovjev S.L. Teploobmen v jadernykh ehnergeticheskikh ustanovkakh [Heat Transfer in Nuclear Power Plants]. M. Pub. MEI, 2003. (in Russian) [12] Semenov V.K., Gorbuncov A.F., Gorbuncov D.A. Konvektivnoe okhlazhdenie obmotok moshhnykh ehlektricheskikh transformatorov [Convective Cooling of Windings of Powerful Electrical Transformers]. Sbornik Issledovanija v oblasti teoreticheskikh osnov ehlektrotekhniki i inzhenernojj ehlektrofiziki [Collection of works "Research in the Field of Theoretical Fundamentals of Electrical Engineering and Engineering Electrophysics"]. Ivanovo. Pub. Ivanovskogo ehnergoinstituta, 1982. p. 113. (in Russian) [13] Gershuni G.Z., Zhukhovickijj E.M., Nepomnjashhijj A.A. Ustojjchivost konvektivnykh techenijj [Stability of Convective Currents]. M. Pub. Nauka [Science], 1989. (in Russian) [14] Shlikhting G. Teorija pogranichnogo sloja [Boundary Layer Theory]. M. Pub. Nauka [Science], 1974. (in Russian) [15] Semenov V.K. K voprosu teploobmena v vertikalnykh kanalakh gazorazrjadnykh apparatov [Heat Exchange in Vertical Channels of Gas-Discharge Apparatus]. Teplofizika vysokikh temperature [Thermal Physics of High Temperatures], 1998, Vol. 36, №3, pp. 503–507. (in Russian) |
| Papers | 61 - 69 |
| URL Article | URL Article |
| Open Article |