Heat transfer in a small diameter tube at high Reynolds numbers

Oleg V. Vitovsky, Maksim S. Makarov, Vladimir E. Nakoryakov, Viktor S. Naumkin

Результат исследований: Материалы для журналаСтатья

7 Цитирования (Scopus)

Аннотация

Investigation results on heat transfer in low-Prandtl helium-xenon gas mixture and air, flowing in a small diameter tube, are presented. New experimental data on the heat transfer coefficient in the flow of helium-xenon mixture are obtained; results of numerical simulation are compared with the experimental data and known empirical correlations. Based on the simulation data it is shown that in a heated tube an increase in the Reynolds number due to an increase in the flow rate intensifies the heat transfer, and it may be due to the flow acceleration. It is shown that the high flow velocity and significant acceleration have a considerable effect on heat transfer in a tube, and the use of mean-mass stagnation temperatures as the determining one for generalization of data on heat transfer is insufficient. For the studied conditions, the known correlations give a significant error in determination of the heat transfer coefficient: the lower the Prandtl number and gas density, the higher the error.

Язык оригиналаАнглийский
Страницы (с-по)997-1003
Число страниц7
ЖурналInternational Journal of Heat and Mass Transfer
Том109
DOI
СостояниеОпубликовано - 1 июн 2017
Опубликовано для внешнего пользованияДа

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Fingerprint Подробные сведения о темах исследования «Heat transfer in a small diameter tube at high Reynolds numbers». Вместе они формируют уникальный семантический отпечаток (fingerprint).

  • Цитировать