Design and Simulation of Nozzle for Pure Water Jet Portable Cutting Tool
Razali Abidin1, Mohamad Asmidzam Ahamat2, John Paul3, Al Imran4, Tarmizi Ahmad5, Hafizi Nordin6, Wan Hanif Wan Yaacob7
1Razali Abidin, Centre for Defense Research and Technology, National Defense University of Malaysia, Kuala Lumpur, Malaysia.
2Mohamad Asmidzam Ahamat, Universiti Kuala Lumpur, Kuala Lumpur, Malaysia.
3John Paul, Universiti Kuala Lumpur, Kuala Lumpur, Malaysia.
4Al Imran, Universiti Kuala Lumpur, Kuala Lumpur, Malaysia.
5Tarmizi Ahmad, Centre for Defense Research and Technology, National Defense University of Malaysia, Kuala Lumpur, Malaysia.
6Hafizi Nordin, Centre for Defense Research and Technology, National Defense University of Malaysia, Kuala Lumpur, Malaysia.
7Wan Hanif Wan Yaacob, Centre for Defense Research and Technology, National Defense University of Malaysia, Kuala Lumpur, Malaysia.
Manuscript received on 11 December 2019 | Revised Manuscript received on 23 December 2019 | Manuscript Published on 31 December 2019 | PP: 703-706 | Volume-8 Issue-12S2 October 2019 | Retrieval Number: L112210812S219/2019©BEIESP | DOI: 10.35940/ijitee.L1122.10812S219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A pure water jet at subsonic speed provides an opportunity for application in cutting soft material with the advantage of not contaminating the workpiece. Inside the nozzle, water is flowing through various cross sections, which lead to pressure drop and loss of energy. This requires a nozzle with a design that causes minimum pressure drop. In this work, Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) were used to analyse the flow through five different nozzles. For each nozzle, the pressures of 10 MPa, 20 MPa and 30 MPa were applies at the inlet. For the inlet pressure of 10 MPa, the highest outlet velocity us 136.12 m/s at the pressure of 9.261 MPa. The impact pressure at stand distance of 0.5 mm and 1.0 mm were 8.26 MPa and 8.02 MPa, respectively. For this nozzle, the Factor of Safety for 10 MPa, 20 MPa and 30 MPa were 6.4, 3.2 and 2.961, respectively. The findings are relevant to the development of pure water jet cutting machine.
Keywords: Factor of Safety, Inlet Pressure, Nozzle, Pure Waterjet, Outlet Pressure.
Scope of the Article: Digital Clone or Simulation