Experimental study of rheological properties of solid propellant slurry at low-shear rate and numerical simulation

被引：5

作者：

Wu, Yue ^{[1
]}

Li, Zhuo ^{[2
]}

Ji, Yong-chao ^{[2
]}

Lu, Rong ^{[3
]}

机构：

[1] Inner Mongolia Univ Technol, Coll Chem Engn, Hohhot 010051, Inner Mongolia, Peoples R China

[2] Inner Mongolia Univ Technol, Coll Sci, Hohhot, Peoples R China

[3] China Aerosp Sci & Ind Corp, Hohhot, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2020年 / 137卷 / 42期

关键词：

constitutive model; experimental study; numerical simulation; rheological properties; solid propellant slurry; NONLINEAR FREE-VIBRATION; COMPOSITE; PARAMETERS; BEHAVIOR; FLOW;

D O I：

10.1002/app.49287

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The steady state rheological properties of a three-component hydroxyl-terminated polybutadiene binder (HTPB) solid propellant slurry at low shear rate were investigated using a rotational rheometer. The data were analyzed and the rheological characteristics of the slurry were determined. The effect of shear rate on apparent viscosity and shear stress as well as the viscosity-time effect of the slurry were also analyzed. Herschel-Bulkley (H-B) model was applied for the simulation of the flow process of a two-dimensional container using CFD Ansys-polyflow software. Experimental results showed that solid propellant slurry had yield pseudoplasticity. Yield characteristics were determined based on the fact that when shear stress was greater than yield stress, the slurry began to flow and the relationship between shear stress and shear rate obeyed power law function. Simulation results further verified the correctness of experimental results.

引用

页数：11

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