Fig. 1 Definition of planes for calculating Qf in Eq. (1)
Fig. 2 Definition of optimal design variables in helical ribbon impeller
Fig. 3 Computational grid and domains for 3-D simulation
Fig. 4 Distribution of viscous fluid volume fraction
Fig. 6 Response surface of power coefficient NP as function of width and height of impeller for each turn (Rotational speed=30 rpm, Fluid viscosity=200,000 cP)
Fig. 7 Response surface of pumping effectiveness ηp as function of width and height of impeller for each turn (Rotational speed=30 rpm, Fluid viscosity=200,000 cP).
Fig. 5 Response surface of flow coefficient Nf as function of width and height of impeller for each turn (Rotational speed=30 rpm, Fluid viscosity=200,000 cP).
Table 1 Grid information and boundary conditions for 3-D simulation of impeller and vessel
참고문헌
- K. Takahashi, M. Sasaki, K. Arai and S. Saito, "Effects of Geometrical Variables of helical Ribbon Impellers on Mixing of Highly Viscous Newtonian Liquids", J. of Chemical Engineering of Japan, Vol. 15, No. 3, 1982, pp. 218-224.
- L. S. Perse and M. Zumer, "Mixing and Viscosity Determinations with Helical Ribbon Impeller", Che. Biochem. Eng. Vol. 14, No. 4, 2004, pp. 363-371.
- D. Garcia-Cortes, E. Ferrer, and E. Barbera, "Hydrodynamic Characterization of the Flow induced by a Four-Bladed Disk-Style Turbine", Chemical Engineering Research and Design, Vol. 79, Part A, 2001, pp. 269-273. https://doi.org/10.1205/026387601750281798
- Y. Choi, J. Choi, D. Kim and N. Hur, "A Numerical Analysis on Mixing Performance for Various Types of Turbine Impeller in a Stirred Vessel", Korean Society Computational Fluids Engineering, Vol. 16, No. 1, 2013, pp. 47-55.
- H. Ameur, Y. Kamla and D. Sahel, "Performance of Helical Ribbon and Screw Impellers for Mixing Viscous Fluids in Cylindrical Reactors", ChemEngineering, 2018.
- A. A. Rsheed, Y. S. Fangary and N. A. Mahmoud, "Apparent Viscosity Mixing Index Using CFD Computations for Non-Newtonian Fluids Using Helical Ribbon Impeller", Journal of Engineering Sciences, Vol. 39, No. 4, pp. 827-838, 2011.
- ANSYS Workbench DesignXplorer User's Guide, Release 18.2.
- ANSYS CFX-Solver Modeling Guide, Chapter 12, Release 18.2.