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A. Comerford, V. Gravemeier and W. A. Wall An algebraic variational multiscale–multigrid method for large-eddy simulation of turbulent pulsatile flows in complex geometries with detailed insight into pulmonary airway flow International Journal for Numerical Methods in Fluids 71

Article first published online: 19 JUL 2012 | DOI: 10.1002/fld.3704

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The algebraic variational multiscale-multigrid method, an advanced computational approach recently proposed for large-eddy simulation of turbulent flow, is further developed in this study for turbulent flow simulations in complex geometries, applying it to pulsatile turbulent flow dynamics of the upper and lower pulmonary airways up to generation 7. Our results suggest that turbulent effects in the bronchial airways are rather weak and can completely decay as early as the third generation, depending on geometry and flow distribution.

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