Heat transfer and flow visualization experiments for plasma jets issuing from slit nozzles

In this paper, new regimes of flow and heat transfer in the 100 kW IPG-4 plasmatron were investigated. The flow was generated by installing a slit nozzle behind the 80 mm diameter discharge channel. Using slug calorimeters, the heat flux distribution along the axis of symmetry of a 100x100x10 mm cop...

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Hauptverfasser: Chaplygin, A. V., Gordeev, A. N.
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:In this paper, new regimes of flow and heat transfer in the 100 kW IPG-4 plasmatron were investigated. The flow was generated by installing a slit nozzle behind the 80 mm diameter discharge channel. Using slug calorimeters, the heat flux distribution along the axis of symmetry of a 100x100x10 mm copper plate flown around by an air plasma jet at the angles of attack of 0° and 30° was obtained. A water-cooled 100x100x10 mm copper plate with a grid of injection holes was made. The plate’s holes were used to inject acetylene or propane in the boundary layer, enabling visualization of streamlines on the plate surface. The surface temperature of a flat specimen made from “Buran” orbital vehicle heat shield tile with white low-catalytic coating was measured for the longitudinal flow around the surface using the spectral pyrometry method.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0052124