The presented simulation model of surface tension and wettability based on physical properties of liquids is designed for use in computer graphics. Due to the relatively small surface tension forces the model is useful for simulating liquid of small volume such as droplets. This model can be used in conjunction with various fluid simulation methods, one of the most popular - Marker and Cell - has been selected for this paper. The paper describes also a simple and rapid method of determining the liquid surface as a mesh of triangles. The presented method improves the final visual effect and is well suited for determining the surface of the droplets. The simulation method was applied to create realistic animations of flowing liquid droplets of different types.