Numerical simulation of the focused powder streams in coaxial laser cladding

被引：91

作者：

Lin, JM ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 701, Taiwan

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2000年 / 105卷 / 1-2期

关键词：

numerical simulation; coaxial laser cladding; columnar powder streams;

D O I：

10.1016/S0924-0136(00)00584-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The powder flow structures of a coaxial nozzle for laser cladding was simulated by the numerical programme FLUENT with various arrangements of the nozzle exit. Both focused and columnar powder streams could be generated in a coaxial nozzle. It can be found that the concentration mode is influenced significantly by the nozzle arrangement and gas flow settings. According to the numerical results, more than 50% powder concentration can be increased in a gas stream through a specific nozzle arrangement for coaxial laser cladding. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：17 / 23

页数：7

共 13 条

[1] Abramovich G. N., 1963, THEORY TURBULENT JET
[2] [Anonymous], 1961, HDB FLUID DYNAMICS
[3] EXPERIMENTAL INVESTIGATION OF AN AXISYMMETRIC JET IN A CO-FLOWING AIR STREAM
ANTONIA, RA
BILGER, RW
[J]. JOURNAL OF FLUID MECHANICS, 1973, 61 (DEC18) : 805 - 822
[4] NUMERICAL-MODELS FOR DILUTE GAS-PARTICLE FLOWS - REVIEW
CROWE, CT
[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1982, 104 (03): : 297 - 303
[5] FAN J, 1992, EXP FLUIDS, V13, P279, DOI 10.1007/BF00189021
[6] *FLUENT INC, 1996, FLUENT 4 4 4 US GUID
[7] HINZE JO, 1975, TURBULENCE JETS
[8] KOCH JL, 1993, RAPID PROTOTYPING LA, P556
[9] Design characteristics and development of a nozzle for coaxial laser cladding
Lin, J
Steen, WM
[J]. JOURNAL OF LASER APPLICATIONS, 1998, 10 (02) : 55 - 63
[10] Rajaratnam N., 1976, TURBULENT JETS

← 1 2 →