ISSN Online: 2688-7231
ISBN Flash Drive: 978-1-56700-497-7
ISBN Online: 978-1-56700-496-0
Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)
Sharp Interface Level Set Method on a Non-Uniform Grid and Performance Study for Droplet Evaporation
Resumo
Numerical methodology of sharp-interface level-set-method
(SI-LSM) on a non-uniform and staggered grid for two-phase
flows with phase change is presented. Verification as well as
performance study of the SI-LSM (on a non-uniform as
compared to uniform grid) are also presented. For the
implementation of the difference in the discretization method
of the various conservation laws on a non-uniform grid,
necessary changes due to an offset in the grid points for flow
variables are illustrated in the present work. Implementation
of the FDM based ENO scheme on a highly stretched nonuniform
grid is presented; derived here using Lagrangian
interpolating polynomial. Fluid-flow and interface solvers on
the non-uniform grid are verified with published results on
the breakup of a liquid jet problem. Energy-equation and
interface solvers (on a non-uniform grid) are verified with an
analytical solution on simultaneous heat and mass transfer
induced Stefan flow. Finally, the fluid flow, energy-equation,
and species-equation solvers are coupled to simulate flow
involving both heat and mass-transfer induced phase change.
For two-phase flow with phase change, performance study
(on a non-uniform grid) is presented on a problem involving
evaporation of a falling droplet in air.