Numerical simulation and experimental investigation of gas–powder flow from radially symmetrical nozzles in laser-based direct metal deposition

By S. Zekovic, R. Dwivedi, Radovan Kovacevic. 2007

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Laser powder deposition (2009, methodology): “A detailed investigation of the gas-powder flow from a four-lateral-tube nozzle configuration, performed by Zekovic et al. (2007)”
An analytical model of beam attenuation and powder heating during coaxial laser direct metal deposition (2007, methodology): “Powder flow from the coaxial nozzle was experimentally investigated using the optical light sheet method previously proven by Vetter et al [35], Pinkerton et al [20] and Zekovic et al [29].”
2D longitudinal modeling of heat transfer and fluid flow during multilayered direct laser metal deposition process (2012, unknown): “However, a more realistic value can be found using the approach proposed by Zekovic et al. [19].”