Two-Dimensional Problem of Turbulent Natural Convection in a Semi-Open Cavity with Radiant Heating of Internal Boundaries

Alexander Nee, Liliya Valieva

Research output: Contribution to journalConference article

Abstract

Mathematical modelling of turbulent natural convection in a semi-open cavity with a heat-conducting walls of finite thickness with radiant heating of internal boundaries was performed. Two-dimensional problem of the conjugate heat transfer was solved by means of the finite difference method. Scale influence of open boundaries and radiant heating of the gas - wall interfaces on the formation of differential and integral heat transfer characteristics was established. An increase in the dimensionless time (τ) led to displacement of extremum temperatures in the typical cross section (Y = 0.5) to an open vertical boundary. The average Nusselt number monotonically increased at the gas - a wall interfaces in a range of 400<τ<1200.

Original languageEnglish
Article number01120
JournalMATEC Web of Conferences
Volume72
DOIs
Publication statusPublished - 9 Aug 2016
EventHeat and Mass Transfer in the System of Thermal Modes of Energy - Technical and Technological Equipment, HMTTSC 2016 - Tomsk, Russian Federation
Duration: 19 Apr 201621 Apr 2016

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Radiant heating
Natural convection
Gases
Heat transfer
Nusselt number
Finite difference method
Temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Engineering(all)
  • Materials Science(all)

Cite this

Two-Dimensional Problem of Turbulent Natural Convection in a Semi-Open Cavity with Radiant Heating of Internal Boundaries. / Nee, Alexander; Valieva, Liliya.

In: MATEC Web of Conferences, Vol. 72, 01120, 09.08.2016.

Research output: Contribution to journalConference article

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AB - Mathematical modelling of turbulent natural convection in a semi-open cavity with a heat-conducting walls of finite thickness with radiant heating of internal boundaries was performed. Two-dimensional problem of the conjugate heat transfer was solved by means of the finite difference method. Scale influence of open boundaries and radiant heating of the gas - wall interfaces on the formation of differential and integral heat transfer characteristics was established. An increase in the dimensionless time (τ) led to displacement of extremum temperatures in the typical cross section (Y = 0.5) to an open vertical boundary. The average Nusselt number monotonically increased at the gas - a wall interfaces in a range of 400<τ<1200.

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