Abstract
In the present paper, both CFD computations and experiments were carried out in order to quantify thermal fluxes from an impinging HVOF jet. The case of a CDS gun fed by natural gas is considered. Standoff distances ranging from 50 mm up to 300 mm were investigated. The CFD model implements a 2-layer extension to the Chen-Kim k-? turbulence model for a better quantification of thermal exchanges with the front body surface. Experiments were performed using two different methods. The first device incorporates two square calorimeters positioned side by side. It was elaborated in order to attempt defining the radial profile of the transferred thermal flux. Additionally, an infrared thermal camera was used to measure the front part surface temperature.
