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Abstract:

The Prandtl mixing length model has been used to take into account the turbulent effects in a 30 A high-energy density cutting torch model. In particular, the model requires the introduction of only one adjustable coefficient c corresponding to the length of action of the turbulence. It is shown that the c value has little effect on the plasma temperature profiles outside the nozzle (the differences being less than 10 %), but severely affects the plasma velocity distribution, with differences reaching about 100 % at the middle of the nozzle-anode gap. Within the experimental uncertainties it was also found that the value c = 0.08 allows to reproduce both, the experimental data of velocity and temperature.

Registro:

Documento: Conferencia
Título:On the use of the Prandtl mixing length model in the cutting torch modeling
Autor:Mancinelli, B.; Minotti, F.O.; Kelly, H.
Filiación:Grupo de Descargas Eléctricas, Departamento Ing. Electromecánica, Universidad Tecnológica Nacional, Laprida 651, Venado Tuerto (2600), Santa Fe, Argentina
Instituto de Física del Plasma (CONICET), Departamento de Física, Ciudad Universitaria, (1428) Buenos Aires, Argentina
Palabras clave:Nozzles; Adjustable coefficient; C values; Cutting torch; Experimental uncertainty; High energy densities; Mixing length; Plasma temperature; Turbulent effects; Mixing
Año:2011
Volumen:296
Número:1
DOI: http://dx.doi.org/10.1088/1742-6596/296/1/012025
Título revista:Journal of Physics: Conference Series
Título revista abreviado:J. Phys. Conf. Ser.
ISSN:17426588
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v296_n1_p_Mancinelli

Referencias:

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Citas:

---------- APA ----------
Mancinelli, B., Minotti, F.O. & Kelly, H. (2011) . On the use of the Prandtl mixing length model in the cutting torch modeling. Journal of Physics: Conference Series, 296(1).
http://dx.doi.org/10.1088/1742-6596/296/1/012025
---------- CHICAGO ----------
Mancinelli, B., Minotti, F.O., Kelly, H. "On the use of the Prandtl mixing length model in the cutting torch modeling" . Journal of Physics: Conference Series 296, no. 1 (2011).
http://dx.doi.org/10.1088/1742-6596/296/1/012025
---------- MLA ----------
Mancinelli, B., Minotti, F.O., Kelly, H. "On the use of the Prandtl mixing length model in the cutting torch modeling" . Journal of Physics: Conference Series, vol. 296, no. 1, 2011.
http://dx.doi.org/10.1088/1742-6596/296/1/012025
---------- VANCOUVER ----------
Mancinelli, B., Minotti, F.O., Kelly, H. On the use of the Prandtl mixing length model in the cutting torch modeling. J. Phys. Conf. Ser. 2011;296(1).
http://dx.doi.org/10.1088/1742-6596/296/1/012025