On the use of the Prandtl mixing length model in the cutting torch modeling
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 tha...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v296_n1_p_Mancinelli http://hdl.handle.net/20.500.12110/paper_17426588_v296_n1_p_Mancinelli |
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paper:paper_17426588_v296_n1_p_Mancinelli |
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paper:paper_17426588_v296_n1_p_Mancinelli2023-06-08T16:27:17Z On the use of the Prandtl mixing length model in the cutting torch modeling Nozzles Adjustable coefficient C values Cutting torch Experimental uncertainty High energy densities Mixing length Plasma temperature Turbulent effects Mixing 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. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v296_n1_p_Mancinelli http://hdl.handle.net/20.500.12110/paper_17426588_v296_n1_p_Mancinelli |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Nozzles Adjustable coefficient C values Cutting torch Experimental uncertainty High energy densities Mixing length Plasma temperature Turbulent effects Mixing |
| spellingShingle |
Nozzles Adjustable coefficient C values Cutting torch Experimental uncertainty High energy densities Mixing length Plasma temperature Turbulent effects Mixing On the use of the Prandtl mixing length model in the cutting torch modeling |
| topic_facet |
Nozzles Adjustable coefficient C values Cutting torch Experimental uncertainty High energy densities Mixing length Plasma temperature Turbulent effects Mixing |
| description |
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. |
| title |
On the use of the Prandtl mixing length model in the cutting torch modeling |
| title_short |
On the use of the Prandtl mixing length model in the cutting torch modeling |
| title_full |
On the use of the Prandtl mixing length model in the cutting torch modeling |
| title_fullStr |
On the use of the Prandtl mixing length model in the cutting torch modeling |
| title_full_unstemmed |
On the use of the Prandtl mixing length model in the cutting torch modeling |
| title_sort |
on the use of the prandtl mixing length model in the cutting torch modeling |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v296_n1_p_Mancinelli http://hdl.handle.net/20.500.12110/paper_17426588_v296_n1_p_Mancinelli |
| _version_ |
1768544885700296704 |