Numerical and Experimental Investigations of CoNiCrAlY Particle Suspension Dynamics in Kerosene-Oxygen High Velocity Oxygen Fuel Spraying

Three-dimensional computational fluid dynamics (CFD) modelling is employed to simulate a typical high velocity oxygen fuel process (HVOF) under laboratory operating conditions. Two different approaches, viz., the continuum and discrete models, are engaged model liquid kerosene, their influence on resulting primary gas investigated. Numerical results of validated against available measurements found be in good agreement. It observed that droplets less than 5 μm react completely inside combustion chamber, whereas larger do not. With increasing droplet size, chemical reaction gets extended downstream decreased flame temperature. Thus, it inferred size up yields better characteristics. Discrete solid CoNiCrAlY particles then injected into stream, inflight simulated. Results reveal maximum mean particle 700 m/s temperature 1350 K may achieved given Particle deposit shape determined both numerically experimentally The substrate stand-off distance characteristics investigated reported detail.