Free-molecule flow and convective-radiative energy transport in a tapered tube or conical nozzle

Ephraim M Sparrow, V. K. Jonsson

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

An analysis is presented of the fluid flow and heat transfer characteristics of a highly rarefied gas passing through a tapered tube or conical nozzle. The rate of mass throughflow has been determined as a function of the pressures and temperatures of the system and of the tube dimensions. It is found that, at moderate and large angles of taper, the mass throughflow is affected little by increases in tube length, except for short tubes. At small taper angles, the mass throughflow is more sensitive to tube length. The energy transport analysis includes simultaneous convection and radiation. Numerical results have been found for the adiabatic wall temperature. It is found that, for surfaces that can be approximated realistically as diffuse emitters and reflectors of thermal radiation, the results differ little from those for pure radiation.

Original languageEnglish (US)
Pages (from-to)1081-1087
Number of pages7
JournalAIAA journal
Volume1
Issue number5
DOIs
StatePublished - Jan 1 1963

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Nozzles
Radiation
Molecules
Heat radiation
Flow of fluids
Heat transfer
Temperature
Gases
Convection

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Free-molecule flow and convective-radiative energy transport in a tapered tube or conical nozzle. / Sparrow, Ephraim M; Jonsson, V. K.

In: AIAA journal, Vol. 1, No. 5, 01.01.1963, p. 1081-1087.

Research output: Contribution to journalArticle

Sparrow, Ephraim M ; Jonsson, V. K. / Free-molecule flow and convective-radiative energy transport in a tapered tube or conical nozzle. In: AIAA journal. 1963 ; Vol. 1, No. 5. pp. 1081-1087.
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