کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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473963 | 698826 | 2010 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optimal design for non-Newtonian flows using a topology optimization approach Optimal design for non-Newtonian flows using a topology optimization approach](/preview/png/473963.png)
We study non-Newtonian effects on the layout and geometry of flow channels using a material distribution based topology optimization approach. The flow is modeled with the single-relaxation hydrodynamic lattice Boltzmann method, and the shear dependence of viscosity is included through the Carreau–Yasuda model for non-Newtonian fluids. To represent the viscosity of blood in this model, we use non-Newtonian similarity. Further, we introduce a scaling to decrease the effects of the non-Newtonian model in porous regions in order to stabilize the coupling of the LBM porosity and non-Newtonian flow models. For the resulting flow model, we derive the non-Newtonian sensitivity analysis for steady-state conditions and illustrate the non-Newtonian effect on channel layouts for a 2D dual-pipe design problem at different Reynolds numbers.
Journal: Computers & Mathematics with Applications - Volume 59, Issue 7, April 2010, Pages 2340–2350