Numerical Research on Flow Characteristics of Kerosene Gel in Different Kinds of Pipeline Based on Power-law ConstitutiveModel

doi:10.3969/j.issn.1000-1093.2015.02.008

Abstract

Abstract: In order to optimize the design of kerosene gel supply pipeline and tapered injector, the power-law constitutive model is used to build a solution method of two-dimensional/three-dimensional incompressible steady flow. The flow characteristics of kerosene gel are numerically studied based on a SIMPLE algorithm. The analytical solution of parameters of propellant in straight round pipe and the kinetic energy correction coefficient of laminar flow are presented. The results show that the plunger flow area of straight round pipe is fixed when pipe diameter is unchanged. To reduce the average apparent viscosity of the injector outlet cross section, the length of outlet section needs to be decreased. The reasonable contraction angle of injector is about 40°. In elbow pipe, The secondary flow in the form of double vortices exits in elbow pipe. The asymmetries of shear rate and apparent viscosity are more significant than the asymmetry of flow velocity.

Key words: ordnance science and technology, kerosene gel, pressure loss, kinetic energy correction coefficient, average apparent viscosity, secondary flow, asymmetry, power-law fluid

CLC Number:

V421.4⁺2

CAO Qi, FENG Feng, WU Xiao-song, CHEN Chao. Numerical Research on Flow Characteristics of Kerosene Gel in Different Kinds of Pipeline Based on Power-law ConstitutiveModel[J]. Acta Armamentarii, 2015, 36(2): 242-249.

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