The gas flow through the laser-sustained plasmas

• Autorzy: Szymański Z.
• Języki publikacji: EN

Abstrakty

EN

Modelling of the laser-sustained plasmas (LSP) bin a forced convective flow is presented. The emphasis is put on the modelling of the flow through the region of elevated temperature. Theoretical quasi-two-dimensional and full two-dimensional models are compared. Two examples of such flow are considered. In the first, plasma is maintained by cw CO[2] laser with output power of 2 kW and burns in a stream of argon at atmospheric pressure. The results show that quasi-2D model in which the axial flow is given by the relation [...], where [...] and u are density and velocity of the cold gas, fairly well describes the LSP. The second example is the flow through the argon plasma at 1 atm attached to the surface. In this case the simplified formulae do not exist and hence only the results of the two-dimensional model are presented. They are compared with the results of calculations made for constant temperature T = 300 K. It has been found that the presence of the hot region considerably increases the velocity near the sufrace.

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 1998
• Tom: Vol. 50, nr 2
• Strony: 207--218
• Opis fizyczny: Bibliogr. 14 poz.,

Twórcy

autor

Szymański Z.

• Polish Academy of Sciences, Institute of Fundamental Technological Research