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Abstract
An axisymmetric Dual-Grid Level-Set Method (DGLSM) is proposed for transient simulation of two-fluid electrohydrodynamic flow. Level-set and electric field equations are solved on a uniform grid which is twice that for Navier-Stokes equations, for accurate computation of interface and forces due to surface tension and electric field. Code validation and performance study is done for two problems: coalescence and electric field-induced deformation of drops (both fluids leaky and perfect dielectrics). The DGLSM gives results of almost the same accuracy as a fine-grid-based traditional level-set method (LSM) in a computational time slightly more than that for a coarse-grid-based LSM.
Acknowledgments
Discussions with Kaushal Prasad, Mukul Shrivastava, and Javed Shaikh are highly appreciated.
Notes
Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/unhb.