TY - JOUR

T1 - Calculation of the particle velocity in cold spray in the one-dimensional non-isentropic approach

AU - Ryabinin, A.N.

PY - 2015

Y1 - 2015

N2 - The mathematical model of the motion of gas particles in De Laval nozzle in the one-dimensional non-isentropic approximation is considered. The model takes into account the exchange of momentum and energy between the gas and solid phases. We obtained a system of ordinary differential equations for the parameters of the gas and particle velocity and temperature. For the particular case of air as a carrier gas and copper particles, the system of equations is solved by the Runge-Kutta method. Inlet pressure was equal to 2.5· 106 Pa, inlet temperature was equal to 773 K. For particles of different diameters, the particle velocity and the temperature were calculated at the nozzle exit both in the isentropic and non-isentropic approximations. The ratio of particle and gas mass rates varied up to 20%. For small particle of 8 microns in diameter, exit particle velocity decreases from 691 m/s to 641 m/s, exit particle temperature increases from 113 K to 143 K, while ratio of mass rates arises from 0 to 20 %. For large

AB - The mathematical model of the motion of gas particles in De Laval nozzle in the one-dimensional non-isentropic approximation is considered. The model takes into account the exchange of momentum and energy between the gas and solid phases. We obtained a system of ordinary differential equations for the parameters of the gas and particle velocity and temperature. For the particular case of air as a carrier gas and copper particles, the system of equations is solved by the Runge-Kutta method. Inlet pressure was equal to 2.5· 106 Pa, inlet temperature was equal to 773 K. For particles of different diameters, the particle velocity and the temperature were calculated at the nozzle exit both in the isentropic and non-isentropic approximations. The ratio of particle and gas mass rates varied up to 20%. For small particle of 8 microns in diameter, exit particle velocity decreases from 691 m/s to 641 m/s, exit particle temperature increases from 113 K to 143 K, while ratio of mass rates arises from 0 to 20 %. For large

KW - cold gas dynamic spray

KW - mathematical model

KW - two-phase flow

KW - de Laval nozzle.

M3 - Article

VL - 10

SP - 2435

EP - 2439

JO - ARPN Journal of Engineering and Applied Sciences

JF - ARPN Journal of Engineering and Applied Sciences

SN - 1819-6608

IS - 6

ER -