  In this paper, a specific subgrid term occurring in Large Eddy Simulation
(LES) of two-phase flows is investigated. This and other subgrid terms are
presented, we subsequently elaborate on the existing models for those and
re-formulate the ADM-{\tau} model for sub-grid surface tension previously
published by these authors. This paper presents a substantial, conceptual
simplification over the original model version, accompanied by a decrease in
its computational cost. At the same time, it addresses the issues the original
model version faced, e.g. introduces non-isotropic applicability criteria based
on resolved interface's principal curvature radii. Additionally, this paper
introduces more throughout testing of the ADM-{\tau}, in both simple and
complex flows.
