List of the Top 2 Free Thermal Analysis Software in 2025

SimScale is a cloud-based application that significantly contributes to simulation software across various sectors. This platform offers capabilities in Computational Fluid Dynamics, Finite Element Analysis (FEA), and Thermal Simulation. Additionally, it features 3D simulations, ongoing modeling, as well as motion and dynamic modeling capabilities. With its extensive range of tools, SimScale enhances the efficiency and accuracy of engineering simulations.

Energy2D is an interactive multiphysics simulation tool rooted in computational physics, tailored to model the three main modes of heat transfer: conduction, convection, and radiation, while also incorporating particle dynamics. This software is designed to run smoothly on a variety of computer systems, streamlining the workflow by eliminating the need to switch between different preprocessors, solvers, and postprocessors typically required in computational fluid dynamics studies. Users can conduct "computational experiments" to investigate scientific theories or tackle engineering problems without the necessity for complex mathematical models. Furthermore, ongoing development aims to introduce additional energy transformation types and improve the software's compatibility with various fluid types. Although Energy2D is particularly strong in simulating conduction, its modeling of convection and radiation lacks complete accuracy, indicating that findings related to these processes should be interpreted as qualitative rather than quantitative. More than 40 scientific papers have cited Energy2D as a significant research tool, highlighting its integration into the academic landscape. As the program continues to advance, users can anticipate further enhancements in its features, which could lead to deeper understandings of intricate physical interactions, making it an even more indispensable resource for researchers and engineers alike.