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A Computational and Experimental Investigation into Radial Injection for Suspension High Velocity Oxy-Fuel (SHVOF) Thermal Spray

Chadha, S.; Chadha, Sunil; Jefferson-Loveday, R.; Venturi, F.; Hussain, T.


S. Chadha

Sunil Chadha

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Assistant Professor in Materials & Aerospace Engineering

Professor of Coatings and Surface Engineering


Suspension high velocity oxy-fuel thermal spray typically utilizes axial injections of suspension into the combustion chamber. There are certain cases where the oxygen-sensitive nanoparticles benefit from a reduction in the time and temperature spent in the gas flow. Therefore, a radial injection outside of the nozzle can enable deposition of oxygen-sensitive nanomaterials. This study investigated the effect of the suspension flow rate, angle of injection and the injector diameter on the in-flight particle conditions. The combustion reaction is modeled using the eddy dissipation concept model with a robust reaction mechanism and compared to the current approach within the literature. This approach has not been employed within SHVOF thermal spray and provides a robust treatment of the reaction mechanisms. The suspension was modeled using a two-way coupled discrete particle model. Experimental observations were obtained using high-speed imaging, and observations of the liquid jet were compared to the numerical values.


Chadha, S., Chadha, S., Jefferson-Loveday, R., Venturi, F., & Hussain, T. (2019). A Computational and Experimental Investigation into Radial Injection for Suspension High Velocity Oxy-Fuel (SHVOF) Thermal Spray. Journal of Thermal Spray Technology, 28(6), 1126-1145.

Journal Article Type Article
Acceptance Date Jun 25, 2019
Online Publication Date Jul 15, 2019
Publication Date Aug 1, 2019
Deposit Date Jul 15, 2019
Publicly Available Date Jul 18, 2019
Journal Journal of Thermal Spray Technology
Print ISSN 1059-9630
Electronic ISSN 1544-1016
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 28
Issue 6
Pages 1126-1145
Keywords Suspension thermal spray; SHVOF; HVSFS; Radial Injection; Combustion Modelling; Supersonic Crossflow; High Speed Imaging; 2
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