Numerical simulation and experimental validation of powder flux distribution in coaxial laser cladding |
| |
| Authors: | I Tabernero A Lamikiz E Ukar LN López de Lacalle C Angulo G Urbikain |
| |
| Affiliation: | 1. College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;2. Shanghai Aerospace Equipments Manufacture Co., Ltd, Shanghai 200245, China;1. School of Mechanical Engineering, China University of Mining and Technology, Xuzhou, 221116, China;2. Key Laboratory of Pressure System and Safety, MOE, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China;1. University of Twente, Laboratory of Mechanical Automation, P.O. Box 217, 7500 AE Enschede, The Netherlands;2. Materials innovation institute (M2i), P.O. Box 5008, 2600 GA Delft, The Netherlands;3. University of Twente, Production Technology, P.O. Box 217, 7500 AE Enschede, The Netherlands;1. Université de Lyon, Ecole Nationale d’Ingénieurs de Saint Etienne (ENISE), DIPI Laboratory, 58 rue Jean Parot, Saint-Étienne, 42023 France;2. Khristianovich''s Institute of Theoretical and Applied Mechanics, Siberian Branch of Russian Academy of Sciences, 4/1 Institutskaya str., Novosibirsk, 630090 Russia |
| |
| Abstract: | In this research work a numerical model which simulates the powder flux distribution on a coaxial nozzle is presented. CFD fluent code was used to solve the model equations. The geometry of the domain was obtained using a reverse engineering process of a coaxial nozzle. The model required a deep study of the powder size distribution and feed rate because of their importance as input parameters. The simulation for the discrete phase model was carried out using both, the turbulence k–? model and the Euler–Lagrange approximation. During the model validation a technique based on the selective weight measuring on planes perpendicular to the nozzle axis was used. The powder flux model validation results showed coherence between the estimated and measured particle flux values, particularly when the powder stream presents a Gaussian profile. A simple geometrical model was presented as an application example of the flux distribution model to estimate the clad height. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
