Numerical simulation of gas and particle flow field characteristics in HVOF guns
Conference
·
OSTI ID:377760
- SAIC, McLean, VA (United States)
The particle flow field characteristics in an HVOF gun are examined using numerical simulation techniques. The authors consider the particle injection, acceleration, convection heat transfer, and particle barrel interaction processes in a TAFA JP-5000 HVOF gun. Details of particle trajectories and temperature history as a function of particle size and other parameters are simulated and analyzed. A parameter study is conducted for different particle size, particle injection direction, and particle velocity. The number of distinct particle injection regimes was predicted and analyzed. Particle velocity and temperature at the exit of the barrel are listed. Using numerical simulation, the injection condition can be designed as a function of the set of flow parameters as well as particle properties, including particle size and material properties, to optimize the thermal spray process. A companion paper by the same authors in this proceedings presents a comprehensive analysis of the gas flow conditions for the HVOF gun.
- OSTI ID:
- 377760
- Report Number(s):
- CONF-9509182--; ISBN 0-87170-541-9
- Country of Publication:
- United States
- Language:
- English
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