Numerical Analysis of Dry Ice Blasting Convergent-Divergent Supersonic Nozzle

Aleksandra Dzido, Piotr Krawczyk and Michalina Kurkus-Gruszecka
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Aleksandra Dzido: Institute of Heat Engineering, Warsaw University of Technology, 00-665 Warszawa, Poland
Piotr Krawczyk: Institute of Heat Engineering, Warsaw University of Technology, 00-665 Warszawa, Poland
Michalina Kurkus-Gruszecka: Institute of Heat Engineering, Warsaw University of Technology, 00-665 Warszawa, Poland

Energies, 2019, vol. 12, issue 24, 1-14

Abstract: 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 CO 2 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.

Keywords: dry ice blasting; supersonic flow; two phase flow; CFD (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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