Initial investigation of the dry ice blasting convergent-divergent nozzle geometry with the CFD methods

2019 ◽  
Author(s):  
Aleksandra Mikołajczak ◽  
Piotr Krawczyk ◽  
Krzysztof Badyda
Keyword(s):  
Nozzle Geometry ◽  
Dry Ice ◽  
Initial Investigation ◽  
Dry Ice Blasting

Influence of divergent length on the gas-particle flow in dual hose dry ice blasting nozzle geometry

2020 ◽  
Vol 364 ◽  
pp. 152-158 ◽  
Author(s):  
Mohamad Nur Hidayat Mat ◽  
Nor Zelawati Asmuin ◽  
Md Faisal Md Basir ◽  
Marjan Goodarzi ◽  
Muhammad Faqhrurrazi Abd Rahman ◽  
...  
Keyword(s):  
Particle Flow ◽  
Nozzle Geometry ◽  
Dry Ice ◽  
Dry Ice Blasting

scholarly journals Velocity Flow Field Characteristic on Nozzle Cavity using Central Composite Design of Computational Method for Dry Ice Blasting System

2021 ◽  
Vol 2129 (1) ◽  
pp. 012020
Author(s):  
Mohamad Nur Hidayat Mat ◽  
Md Faisal Md Basir ◽  
Mohamad Farid Sies
Keyword(s):  
Flow Field ◽  
Computational Method ◽  
Nozzle Geometry ◽  
Navier Stokes ◽  
Flow Area ◽  
Ansys Fluent ◽  
Dry Ice ◽  
Velocity Magnitude ◽  
Velocity Flow ◽  
Dry Ice Blasting

Abstract In the development of dry ice blasting nozzle geometry, the critical process parameters depend on particle jet velocity. However, very few researchers have attempted sensitivity on the velocity flow area of specific nozzle geometric parameters. A numerical simulation approach was performed in this paper using Ansys Fluent to investigate different nozzle parameters on the velocity flow field. A two-dimensional model is solved iteratively using averaged Navier-Stokes under Eulerian flow description. It was found that the velocity value increases that reach 550 m/s with an increment of the nozzle area ratio of up to 20 without influencing convergent angle and the velocity magnitude drop linearly from 525 m/s to 505 m/s in with the rise of divergent length that swell up to 700 mm and with constant convergent angle and convergent length.

scholarly journals Response Surface Analysis of DIB Nozzle Geometry on Acoustic Power Level using Central Composite Design of Experiment

2021 ◽  
Vol 2129 (1) ◽  
pp. 012019
Author(s):  
Mohamad Nur Hidayat Mat ◽  
Md Faisal Md Basir ◽  
Nor Zelawati Asmuin
Keyword(s):  
Energy Exchange ◽  
Power Level ◽  
Maximum Level ◽  
Acoustic Power ◽  
Nozzle Geometry ◽  
Operating Pressure ◽  
Noise Emission ◽  
Dry Ice ◽  
Two Phases ◽  
Dry Ice Blasting

Abstract The critical process parameters in manufacturing dry ice blasting nozzle geometry directly related to particle jet velocity. Many studies focused on its performance without considering the noise emission due to high operating pressure. This paper, a numerical simulation study was performed using Ansys Fluent to investigate the effect of nozzle geometry of single-hose dry ice blasting on the acoustic power level. The process of modelling the two-way mass momentum and energy exchange between two phases was successfully solved iteratively in the two-way mass momentum model and the energy exchange between the two phases. It was found that the value of noise emission reaches a maximum level when the shortest convergent angle of 20° with a minimal convergent length of 50 mm and a maximum length of 300 mm is introduced. Besides, the peak value of acoustic power level swell up to 146 dB occurs at a nozzle area ratio of 20 without influencing by convergent angle and extending the divergent length highly influencing noise reduction as less than 143.5 dB for a divergent length of 700 mm.

Industrial use of dry ice blasting in surface cleaning

2021 ◽  
pp. 129630
Author(s):  
Vítězslav Máša ◽  
David Horňák ◽  
Dalimil Petrilák
Keyword(s):  
Surface Cleaning ◽  
Dry Ice ◽  
Industrial Use ◽  
Dry Ice Blasting

Influence of nozzle area ratio on the gas-particle flow for single-hose dry ice blasting nozzle

2020 ◽  
Author(s):  
Mohamad Nur Hidayat Mat ◽  
Nor Zelawati Asmuin ◽  
Md Faisal Md Basir ◽  
Tehseen Abbas ◽  
Mohd Shareduwan Mohd Kasihmuddin ◽  
...  
Keyword(s):  
Area Ratio ◽  
Particle Flow ◽  
Dry Ice ◽  
Dry Ice Blasting

Eco-innovation in the cleaning process: An application of dry ice blasting in automotive painting industry

2020 ◽  
Vol 272 ◽  
pp. 122987
Author(s):  
Ana Onofre ◽  
Radu Godina ◽  
Helena Carvalho ◽  
Isabel Catarino
Keyword(s):  
Cleaning Process ◽  
Dry Ice ◽  
Dry Ice Blasting

scholarly journals Numerical Analysis of Dry Ice Blasting Convergent-Divergent Supersonic Nozzle

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4787 ◽  
Author(s):  
Aleksandra Dzido ◽  
Piotr Krawczyk ◽  
Michalina Kurkus-Gruszecka
Keyword(s):  
Numerical Analysis ◽  
High Speed ◽  
Two Phase Flow ◽  
Supersonic Nozzle ◽  
Phase Flow ◽  
Two Phase ◽  
Dry Ice ◽  
Cleaning Methods ◽  
Industrial Cleaning ◽  
Dry Ice Blasting

There are several well-known and widely used industrial cleaning methods in the market today. One of them is dry ice blasting. In this method, moisture-free air is compressed, mixed with solid CO2 particles, and blasted though a nozzle; in the process, the gas expands, propelling its velocity. The high-speed, two-phase flow cleans by supercooling and crushing particles on the surface, causing dry ice sublimation. As the nozzle is a crucial component of the system, the authors conducted a numerical analysis of the geometry of the proposed convergent-divergent nozzle. A mathematical model of the supersonic, two-phase flow was developed and implemented in commercial Computational Fluid Dynamics (CFD) code. Various operating parameters, such as inlet pressure and dry ice mass flow, were taken into consideration.

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