| Summary: | One of the most daunting challenges in the Cold Gas Dynamic Spray (CGDS)
process is the calculation and design of the nozzles that are used to accel-
erate the gas and the powder particles at supersonic speeds and so promote
the deposition process. Past research into this area resulted in a wealth of
knowledge but unresolved problems still exist. The actual calculations and de-
signs of the CGDS nozzles are considered large, complex, and time consuming.
Consequently, this dissertation develops a new software that focuses on the
simulation of the gas and particles velocities for a large variety of CGDS pro-
cess parameters. However, in order to achieve this, an unified mathematical
model of various cold spray parameter was developed. Thereafter, a new soft-
ware using MATLAB was developed to generate practical graphs for the CGDS
process and generate the 2D recommended nozzle contour, and the Compu-
tational Fluid Dynamics (CFD) software was used to calculate and visualize
the gas flow. Then, the results obtained using the two developed technologies
were compared with data from the peer reviewed journal papers and it was
found that the results obtain using the new MATLAB software and ANSYS
Fluent were very similar with data found in the literature survey. The disser-
tation ends with conclusions about the new approach for the calculation and
design of the CGDS nozzles, and finally highlights its theoretical and practical
implications.
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