Development of an Android application to generate meshes in curvilinear coordinates from contour points acquired by GPS

The simulation of differential equations has been widely used to solve problems in different areas. However, it is often necessary to know the geometry under study, and its description in computational meshes suitable to the problem is a difficult task. Furthermore, the problem may be associated with large geometries, making its representation difficult. For this reason, the paper aims to develop a mobile application for Android, in which the user can acquire a set of points delimiting the contour of a study area, based on GPS locations, and also build a computational mesh of the region, in the curvilinear coordinate system. To verify the functioning of the application and evaluate its results, an experiment was conducted using the developed application. The experiment involved a comparison between contours of a lake, acquired in two different ways: Google Earth images and the application. For this experiment, satisfactory results are obtained.