A multi-directional advection based moment of fluid method for phase change problems

• Published in: Journal of computational physics Vol. 508; p. 113011
• Main Authors: Thamil Kumaran, S.M., Kumar, Rohit, Premachandran, B.
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.07.2024
• Subjects: Face-flux based advection; Film boiling; Film condensation; Moment of fluid; Two-phase flows; Face-flux based advection; Film boiling; Two-phase flows; Film condensation; Moment of fluid
• ISSN: 0021-9991; 1090-2716
• DOI: 10.1016/j.jcp.2024.113011

A multi-directional face-flux based Moment of Fluid (MoF) advection method is developed to simulate two-phase flows with and without phase change. The material volume and centroid are advected in a face-flux based approach which guarantees the conservation of the advected quantities. The face-flux based advection avoids material overlap and void formation between the advected material volumes. The centroid advection of a material volume is computed by advecting the individual centroids of smaller subvolumes. Hence, the proposed procedure reduces the centroid advection error which is proportional to the size of the material volume. Also, the multi-directional advection enables two-phase simulations over unstructured meshes. A two-phase flow solver with the proposed method is used successfully to study film boiling and condensation phenomena. •Proposed a face flux based multi-directional advection for MoF method.•Minimizes centroid advection error by advecting centroids of subvolumes.•Implemented for both structured and unstructured meshes.•Used for film boiling and film condensation.