Both open-source software like OpenFOAM and commercial software like Abaqus are capable of simulating a wide range of multiphysics problems, including phase change, two-phase flow, mechanical stress, and microstructures. However, the choice between these two software packages can depend on several factors, including your specific research needs, budget constraints, and familiarity with the software.

Here are some considerations for each software package:

1. OpenFOAM:

• Open Source: OpenFOAM is an open-source CFD (Computational Fluid Dynamics) software with a large and active user community. It's free to use and modify, which can be advantageous for researchers with limited budgets.
• Customizability: OpenFOAM is highly customizable, allowing users to implement their own models and solvers. This can be beneficial for researchers who need to develop specialized models.
• Multiphysics Capabilities: OpenFOAM has a wide range of solvers and libraries that can handle multiphysics simulations, including phase change, two-phase flow, and fluid-structure interaction (FSI).

2. Abaqus:

• Commercial Software: Abaqus is a commercial finite element analysis software developed by Dassault Systèmes. It comes with comprehensive support and documentation but requires a paid license, which can be expensive.
• Multiphysics Integration: Abaqus offers robust multiphysics capabilities, including thermal-mechanical coupling, fluid-structure interaction, and phase change. It integrates seamlessly with other Dassault Systèmes products like Simulia for a broader range of simulations.
• User-Friendly Interface: Abaqus provides a user-friendly graphical interface (Abaqus/CAE) that can make it more accessible for users who may not have extensive programming experience.
• High-Performance Computing: Abaqus is known for its scalability and high-performance computing capabilities, making it suitable for large and complex simulations.

To find a comparative study or article that directly compares OpenFOAM and Abaqus for your specific research needs, you can perform a literature search on academic databases like IEEE Xplore, ScienceDirect, or Google Scholar. Use keywords related to the multiphysics aspects you're interested in, such as "phase change simulation," "two-phase flow modeling," "mechanical stress analysis," and "microstructure simulation," combined with "OpenFOAM" and "Abaqus."

Keep in mind that the choice between these two software packages should also consider your familiarity with the software, the availability of technical support, and your institution's resources. Additionally, you may find that for certain research projects, a combination of both software tools may be beneficial, leveraging the strengths of each for specific aspects of your simulations.