Large Eddy Simulations of Turbulent Flows at Supercritical Pressure in a Vertical Heated Pipe Using Unstructured Cartesian Grids with Local Refinement

VALERY ARTEMOV, MAKSIM MAKAROV, KONSTANTIN MINKO, GEORGY YANKOV

Abstract


This paper presents the results of numerical simulation of turbulent flow of CO2 at supercritical pressure (SCP) in a uniform heated vertical tube using the large eddy simulation (LES) with the Smagorinsky subgrid scale (SGS) model. Unstructured Cartesian grids with local anisotropic refinement were used for modeling hydrodynamics and heat transfer in a circular pipe. Such grids unlike structured grids in cylindrical coordinates allow one to construct more optimal meshes for the LES method. In addition, such meshes allow one to simulate flows in channels of arbitrary cross-section. To verify the proposed methodology the results of the direct numerical simulation were used. Numerical simulations have been performed using the “in-house” CFD code ANES.


DOI
10.12783/dteees/tpcase2018/30415

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