Abstract
Fast and accurate computation of thermo-physical properties is essential in computationally expensive simulations involving fluid flows that significantly depart from the ideal gas or ideal liquid behavior. A look-up table algorithm based on unstructured grids is proposed and applied to non-ideal compressible fluid dynamics simulations. The algorithm grants the possibility of a fully automated generation of the tabulated thermodynamic region for any boundary and to use mesh refinement. Results show that the proposed algorithm leads to a computational cost reduction up to one order of magnitude, while retaining the same accuracy level compared to simulations based on more complex equation of state. Furthermore, a comparison of the LuT algorithm with a uniformly spaced quadrilateral tabulation method resulted in similar performance and accuracy.
Original language | English |
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Pages (from-to) | 70-77 |
Number of pages | 8 |
Journal | Journal of Computational Science |
Volume | 28 |
DOIs | |
Publication status | Published - 1 Sept 2018 |
Keywords
- CFD
- Interpolation
- Look-up table
- NICFD
- Non-ideal compressible flow
- Real-gas flows
- Thermodynamic modeling
- Trapezoidal map
- Unstructured mesh