Ranz and Marshall correlations limits on heat flow between a sphere and its surrounding gas at high temperature

Ranz and Marshall correlations limits on heat flow between a sphere and its surrounding gas at high temperature

Direct numerical simulations (DNS) for axisymmetric plasma jet are developed to investigate particle plasma spraying process. In this paper we study the plasma jet and we focus mainly on the plasma-particle ex-changes. Finite element analysis employing COMSOL Multiphysics software is used in this si...

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Veröffentlicht in:Thermal science 2015, Vol.19 (5), p.1521-1528
Hauptverfasser: Aissa, Abderrahmane, Abdelouahab, Mohamed, Noureddine, Abdelkader, Elganaoui, Mohammed, Pateyron, Bernard
Format: Artikel
Sprache:eng
Schlagworte:
Chemical and Process Engineering
Computer simulation
Engineering Sciences
Finite element method
Heat transmission
High temperature
Plasma
Plasma jets
Plasma spraying
Plasmas
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Zusammenfassung:Direct numerical simulations (DNS) for axisymmetric plasma jet are developed to investigate particle plasma spraying process. In this paper we study the plasma jet and we focus mainly on the plasma-particle ex-changes. Finite element analysis employing COMSOL Multiphysics software is used in this simulation. Finally, comparisons are made with the numerically observed particle Nusselt?s numbers and theoretically predicted Nusselt?s numbers based on the Ranz-Marshall correlation. The results agree well with those obtained previously. nema
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI120912090A