Numerical simulation and experimental validation of powder flux distribution in coaxial laser cladding

Tabernero, I.; Lamíkiz, Aitzol; Ukar, Eneko; Lacalle, Luís Norberto López de; Angulo, Carlos; Urbikaín, Gorka

doi:10.1016/j.jmatprotec.2010.07.036

Cited by 139 publications

(53 citation statements)

References 17 publications

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“…The hypothesis used by some researchers (Cadavid-Giraldo, 2004;Tabernero et al 2010) confirms that the flow from the exterior surface of the jet is laminar due to sudden reduction of section at orifice inlet. Besides, the hypothesis says that flow remains turbulent at the core of the jet and that the laminar layer becomes turbulent after travelling a certain distance (Fig.…”

Section: Goberning Equationsmentioning

confidence: 78%

Numerical Simulation of Water Jet Quality for Different Orifice Geometries

Goikoetxea¹,

Alberdi²,

Suarez³

et al. 2011

DAAAM International Scientific Book 2011

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Section: Goberning Equationsmentioning

confidence: 78%

Numerical Simulation of Water Jet Quality for Different Orifice Geometries

Goikoetxea¹,

Alberdi²,

Suarez³

et al. 2011

DAAAM International Scientific Book 2011

Self Cite

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“…Although the model of solid and gas dual-phase flows (particles and gas) can evaluate the suction performance more directly [29], considering that compared with the Schlieren results and a tremendous amount of simulation it is more convenient and reasonable to use a fluid model. Mathematical modeling of the experiment was accomplished using the commercial CFD software package FLUENT14 (ANSYS Inc., Pittsburgh, PA, USA).…”

Section: Cfd Methodsmentioning

confidence: 99%

Reverse Circulation Drilling Method Based on a Supersonic Nozzle for Dust Control

Yin

et al. 2016

Applied Sciences

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Abstract:To reduce dust generated from drilling processes, a reverse circulation drilling method based on a supersonic nozzle is proposed. The suction performance is evaluated by the entrainment ratio. A series of preliminary laboratory experiments based on orthogonal experimental design were conducted to test the suction performance and reveal the main factors. Computational fluid dynamics (CFD) were conducted to thoroughly understand the interaction mechanism of the flows. The Schlieren technique was further carried out to reveal the flow characteristic of the nozzle. The results show that the supersonic nozzle can significantly improve the reverse circulation effect. A high entrainment ratio up to 0.76 was achieved, which implied strong suction performance. The CFD results agreed well with experimental data with a maximum difference of 17%. This work presents the great potential for supersonic nozzles and reverse circulation in dust control, which is significant to protect the envrionment and people's health.

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“…In particular, this preliminary study is focused on the performances of a double chamber nozzle solution, controlled through the evaluation of the shape of the powder flow at the exit of the nozzle outlet and the spread of the powder particles on the deposition plane. During experimental tests, the powder flow is monitored with a high-speed camera, in order to confirm its simulating behavior obtained through a Computational Fluid Dynamics CFD model [16,17]. The experimental tests demonstrate that, in the analyzed configurations, the shielding gas seems to have a significant influence on the powder distribution and powder flow geometry.…”

Section: Introductionmentioning

confidence: 94%

Monitoring Approach to Evaluate the Performances of a New Deposition Nozzle Solution for DED Systems

et al. 2017

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Abstract:In order to improve the process efficiency of a direct energy deposition (DED) system, closed loop control systems can be considered for monitoring the deposition and melting processes and adjusting the process parameters in real-time. In this paper, the monitoring of a new deposition nozzle solution for DED systems is approached through a simulation-experimental comparison. The shape of the powder flow at the exit of the nozzle outlet and the spread of the powder particles on the deposition plane are analyzed through 2D images of the powder flow obtained by monitoring the powder depositions with a high-speed camera. These experimental results are then compared with data obtained through a Computational Fluid Dynamics model. Preliminary tests are carried out by varying powder, carrier, and shielding mass flow, demonstrating that the last parameter has a significant influence on the powder distribution and powder flow geometry.

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Numerical simulation and experimental validation of powder flux distribution in coaxial laser cladding

Cited by 139 publications

References 17 publications

Numerical Simulation of Water Jet Quality for Different Orifice Geometries

Numerical Simulation of Water Jet Quality for Different Orifice Geometries

Reverse Circulation Drilling Method Based on a Supersonic Nozzle for Dust Control

Monitoring Approach to Evaluate the Performances of a New Deposition Nozzle Solution for DED Systems

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