Computational analysis of the effect of nozzle cross-section shape on gas flow and particle acceleration in cold spraying

► Nozzle cross-section shape affects gas flow and particle velocity in cold spraying. ► Width/Length ratio of nozzle cross-section influences particle acceleration. ► Elliptical nozzles yields slightly higher impact velocity than rectangular nozzles. ► Releasing particles form nozzle inlet leads to high impact velocity and temperature.