Sep 2026· SAE technical paper series· 0 citations· 11 references
Abstract
For the mixing of hydroxy-terminated polybutadiene (HTPB) with silicon dioxide particles, this study adopts the Computational Fluid Dynamics (CFD) method to conduct a visual analysis on the fluid flow field characteristics generated by the umbrella-frame impeller (UF impeller) and umbrella-frame combined impeller (UFC impeller). Comparative studies are carried out from the dimensions of particle concentration distribution, fluid flow trend, vorticity, and path line. The results show that compared with the UF impeller, the UFC impeller, equipped with an upper blade structure, enables its generated flow field to cover the entire stirred tank more effectively, significantly improving the solid-liquid mixing efficiency. In addition, the fluid-structure coupled numerical method is used to analyze the structural deformation characteristics and stress distribution law of the impellers. The research findings can provide a reference for the optimization of dispersion and mixing processes of solid particles in high-viscosity fluids.
Polymer flooding is one of the effective technologies for enhanced oil recovery (EOR) in offshore oilfields. However, traditional polymer maturation tanks are large in volume, heavy in weight, and slow in dissolution rate, limiting their application in offshore fields. In this study, Higee technology was adopted, with...
Chen-Xi Wang, Hong Du, Jian Zhang et al.· Processes· 0 citations
Three-dimensional CFD-DEM simulations were used to investigate the influence of fluidizing medium on the hydrodynamics and mixing of a binary fluidized bed containing equal-density 3 and 4 mm particles. Water and air were compared using identical geometry, particle properties, and initial conditions over matched normal...
In this study, a transient three‐dimensional numerical model is developed. The model employs large eddy simulation (LES) to resolve unsteady turbulent flows, the Smagorinsky–Lilly model to resolve sub‐grid scale structures, and the volume of fluid (VOF) method to track the motion of three continuous phases (air, slag...
Wen-Jie Zhang, Zhi-Xiao Zhang, Xiang-Long Li et al.· Steel Research International· 0 citations
Centrifugal pumps operating as turbines (PAT) offer a cost-effective solution for micro-hydro power plants. However, their hydraulic performance is compromised by flow separation at the impeller’s outer diameter. This study conducted a transient numerical analysis to evaluate the hydrodynamic effects of modifying sharp...
Fadhlurrahman, Sutardi· The International Journal of...· 0 citations
As a core fluid device, the triplex diaphragm hose pump is prone to unstable operation owing to its complex internal flow field. In this study, a dynamic mesh technique is established as the core of the numerical model. The periodic flexural deformation of the hose wall is prescribed through a user-defined function (UD...
