Comparison of tidal model using mike21 and delft3d-flow in part of Java Sea, Indonesia

This article presents about the comparison between two numerical model for tidal modelling. The tidal in North Coast of Central Java, a part of Java Sea were modelled in 2D to get the sea water level using DELFT3D and MIKE21 in order to identify model performance and efficiency. As the results, both model's bathymetry results show similar interpolation. Both models have been shown to be able to perform small error on tidal models but still need to be revise in further research. The K1 is dominant tidal constituent in the North Coast of Java sea. Unstructured grid results to be more efficient in running time and grid construction. This research is a preliminary research and will be developed in further research.