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Apell, Niklas
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Publications (6/6 displayed)
- 2024Experimental insights into the supersonic close-coupled atomization process employed for metal powder productioncitations
- 2023Experimental investigation of a supersonic close-coupled atomizer employing the phase Doppler measurement techniquecitations
- 2023Supersonic Close-coupled Atomization: Experimental Insights
- 2022Modeling of the Characteristic Size of Drops in a Spray Produced by the Supersonic Gas Atomization Process
- 2022Application of the Phase Doppler Measurement Technique for the Characterization of Supersonic Gas Atomization
- 2021Experimental Investigation of a Close-coupled Atomizer Using the Phase Doppler Measurement Techniquecitations
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document
Experimental Investigation of a Close-coupled Atomizer Using the Phase Doppler Measurement Technique
Abstract
A common method for producing metal powders used for additive manufacturing is based on the atomization of a stream of molten metal by means of a high-pressure gas flow. In the present experimental study, the influence of the liquid mass flow rate on the atomization result has been investigated for a close-coupled atomizer operated with water and air as a substitute for molten metal and argon gas. The phase Doppler measurement technique has been employed to measure local particle size and velocity distributions within the spray. The results indicate that the liquid mass flow rate is a sensitive parameter in determining the mean particle size as well as the width of the particle size distribution. Its influence appears to be strongest in the center of the spray. Here, a decrease in the liquid mass flow rate has been found to lead to a significant decrease in the arithmetic mean particle diameter and a considerably narrower particle diameter distribution.