Browse > Article
http://dx.doi.org/10.14775/ksmpe.2016.16.1.118

A Study on the Simulation Analysis of Nozzle Length and Inner Spiral Structure of a Waterjet  

Gwak, Cheong-Yeol (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
Shin, Bo-Sung (Department of Optics and Mechatronics Engineering, Department of Cogno-mechatronics Engineering, Convergence Research Center of 3D Laser-aided Innovative Manufacturing Technology, Pusan National University)
Go, Jeung-Sang (Department of Mechanical Engineering, Pusan National University)
Kim, Moon-Jeong (Department of Mechanical Engineering, Pusan National University)
Yoo, Chan-Ju (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
Yun, Dan-Hee (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.16, no.1, 2017 , pp. 118-123 More about this Journal
Abstract
It is well known that water jetting is now widely used in the advanced cutting processes of polymers, metals, glass, ceramics, and composite materials because of some advantages, such as heatless and non-contacting cutting different from the laser beam machining. In this paper, we proposed the simulation model of waterjet by lengths and the inner spiral structure of the nozzle. The simulation results show that the outlet velocity of the nozzle is faster than the inlet. Furthermore, we found rapid velocity reduction after passing through the outlet. The nozzle of diameter ${\phi}500$ and length 70mm, shows the optimal fluid width and velocity distribution. Also, the nozzle with inner spiral structure shows a Gaussian distribution of velocity and this model is almost twice as fast as the model without spiral structure, within the effective standoff distance (2.5 mm). In the future, when inserting abrasive material into the waterjet, we plan to analyze the fluid flow and the particle behavior through a simulation model.
Keywords
Waterjet; Fluid Behavior; Standoff Distance; Inner Spiral Structure; Nozzle Length; Fluid Velocity; , Simulation Analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Han, B. J., Kang, M. C., "Development of Vaccum Pressure Monitoring System on Abrasive Delivery Line in Abrasive Waterjet", Proceeding of the KSMPE Autumn Conference, pp. 30, 2014.
2 Hwang, K. H., Kim, S. R., Kim, C. M., Kim, R. W., Kwon, H. J., "Monitoring of Focusing Tube Wear in Abrasive Waterjet Machining", Proceeding of the KSMPE Autumn Conference, pp. 112, 2015.
3 Kuk, Y. H., Choi, H. J., "Analysis of Fluid-Structure Interaction of Cleaning System of Micro Drill Bits", J. of The Korean Society for Precision Engineering, Vol. 15, pp. 8-13, 2016.
4 Park, K. S., Shin, B. S., Bahk, Y. K., Go, J. S., "A study on the microcutting of multi-layered material using abrasive waterjet", J. of The Korean Society of Manufacturing Technology Engineers, pp. 261-262, 2007.
5 Bahk, Y. K., Park, K. S., Kim, H. H., Shin, B. S., Ko, J. S., and Go, J. S., "Evaluation of efficiency on glass precision machining by using abrasive water-jet", J. of The Korean Society for Precision Engineering, Vol. 27, pp. 87-93, 2010.
6 Shin, B. S., Park, K. S., Bahk, Y. K., Go, J. S., "A study on the microcutting characteristics of multi-layered material by abrasive waterjet", J. of The Korean Society of Manufacturing Technology Engineers, pp. 159-164, 2007.
7 Park, K. S., Bahk, Y. K., Lee, J. H., Lee, C. M., Go, J. S., Shin, B. S., "Experiment Investigations into the precision into cutting of high-pressured jet for thin multi-layered material", J. of The Korean Society for Precision Engineering, Vol. 26, pp. 44-50, 2009.
8 Park, K. S., Jeong, H. Y., Bae, Y. B., Shin, B. S., "Finite element analysis of abrasive waterjet cutting process by using commercial code", J. of The Korean Society of Manufacturing Technology Engineers, pp. 197-198, 2007.
9 Park, K. S., Je, S. K., Lee, C. H., Shin, B. S., "Experimental study on waterjet cutting of copper sheet according to abrasive particle size", J. of Korean Society of Precision Engineering, pp. 443-444, 2008.
10 Shin, B. S., Go, J. S., "Water Jet Device", Patent, No. 10-1123565-0000
11 Shin, B. S., Go, J. S., "Water jet cutting device", Patent, No. 10-2007-0072839.
12 Park, K. S., Bahk, Y. K., Go, J. S., Shin, B. S., "A study on the frosting phenomena of abrasive waterjet microcutting for multi-layered materials", J. of The Korean Society for Precision Engineering, Vol. 16, pp. 183-190, 2010.
13 Miller, D. S., "Micromachinning with abrasive waterjets", Journal of Material Processing Technology, Vol. 149, pp. 37-42, 2004.   DOI
14 Bahk, Y. K., Park, K. S., Shin, B. S., Go, J. S., "Experimental and numerical investigation of glass cutting by abrasive waterjet", J. of The Korean Society of Precision Engineers, pp. 263-264, 2007.