A second-order accurate lattice Boltzmann non-Newtonian flow model
نویسندگان
چکیده
Abstract A second-order accurate lattice Boltzmann model is presented for nonNewtonian flow. The non-Newtonian nature of the flow is implemented using a power law model. This is used to enable the accuracy of the model to be assessed and is not a limitation of the model. The second-order accuracy is demonstrated for a range of power law model parameter values representing shear thinning and shear thickening fluids. These results are compared with those of Gabbanelli et al (2006 Phys. Rev. E 72 046312) and it is noted that a higher order of accuracy and greater computational efficiency are achieved. These results demonstrate the suitability of the LBM for shear-dependent nonNewtonian flow simulations.
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تاریخ انتشار 2006