I have released the first stable version of Energy2D. Check it out:
Based on computational physics, Energy2D is an interactive, visual simulation program that models all three mechanisms of heat transfer—conduction, convection, and radiation. Students can use it as an inquiry tool to explore heat and mass flows in two-dimensional structures under different environmental conditions such as sunlight and wind. Physical science, Earth science, and engineering teachers from middle schools to colleges may find Energy2D a useful tool in their classes to teach complicated science and engineering concepts.
Energy2D runs within any web browser on Windows, Mac OS X, and Linux, provided that Java is installed and enabled. In addition, Energy2D can be used as a standalone application for creating energy simulations. Your simulations can be deployed as Java applets embedded in web pages. The capability of creating complex scientific simulations is one of the most important features of Energy2D. Providing an intuitive user interface to support that feature is the most important development goal of Energy2D. It is our hope that you and/or your students will be able to design new computational experiments to test a hypothesis or solve a problem using Energy2D.