DynamFluid: Development and validation of a New GUI-based CFD tool for the analysis of incompressible non-isothermal flows Articles uri icon

publication date

  • October 2019

start page

  • 1

end page

  • 27

issue

  • 11 (777)

volume

  • 7

International Standard Serial Number (ISSN)

  • 2227-9717

abstract

  • A computational fluid dynamics software (DynamFluid) based on the application of the finite element method with the characteristic-based-split algorithm is presented and validated. The software is used to numerically integrate the steady and unsteady Navier&-Stokes equations for both constant-density and Boussinesq non-isothermal flows. Benchmark two-dimensional computations carried out with DynamFluid show good agreement with previous results reported in the literature. Test cases used for validation include (i) the lid-driven cavity flow, (ii) mixed convection flow in a vertical channel with asymmetric wall temperatures, (iii) unsteady incompressible flow past a circular cylinder, and (iv) steady non-isothermal flow past a circular cylinder with negligible buoyancy effects. The new software is equipped with a graphical user interface that facilitates the definition of the fluid properties, the discretization of the physical domain, the definition of the boundary conditions, and the post-processing of the computed velocity, pressure and temperature fields.

keywords

  • finite element method; characteristic-based-split algorithm; benchmark problems; lid-driven cavity flow; non-isothermal vertical channel; flow past a circular cylinder; boussinesq approximation