Interface Equilibrator

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Interface Equilibrator is a Windows® application with an easy-to-use graphical user interface integrating an intuitive and highly interactive 3D computer aided environment with versatile and powerful tools for computing the equilibrium shape of fluid interfaces and investigating their stability.

  • Calculations based on advanced numerical methods, well established in the scientific literature and more efficient and versatile than conventional computational fluid dynamics approaches for simulating fluid interfaces at the equilibrium.
  • Short learning curve. Learn fast how to use the software by following our step-by-step Tutorial videos.
  • No computational or theoretical background required (only a basic knowledge of wetting and capillarity theory is recommended).
  • Set up and run simulations with just a few clicks.
  • Suited also for undergrad students.

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Video's license: you may download, copy, and distribute the video in any medium or format in its unaltered form only, and only so long as attribution is given to the creator. Commercial use allowed.



Our software brings deeper insights into wetting and capillarity phenomena, providing effective solutions in a wide range of research problems fundamental for a broad spectrum of relevant scientific and technological applications, such as: microfluidics and open microfluidics; micro-robotics; opto-fluidics; functional surface design for superwetting/superhydrophilicity and superhydrophobicity, self-cleaning, anti-fogging, water and thermal management technologies, atmospheric water extraction from condensation, etc.; sessile droplet wetting on structured or patterned surfaces; wetting of microfibers for textile industry, polymer composite engineering, filtration of aerosol droplets, etc.; inkjet printing; aerospace applications such as propellant-management devices and fluid management in low-gravity environments; soldering for chip manufacturing; petroleum engineering and enhanced oil recovery; fluid displacement and retention in porous media; coal dust suppression; de-foaming for industrial processes; particle-stabilized foams, bubbles and emulsions; froth flotation for mineral industry, micro-plastic removal from water, etc.; capillary deformations induced by colloidal particles adsorbed at fluid interfaces and resultant capillary interactions; formation of new micro- and nano-geometric opto-electronic materials by confinement and self-assembly; free boundary problems and solutions of Young-Laplace equation with Young's Law for the contact angle as a boundary condition along the three-phase contact line.

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30th Mar. 2025

The new tutorial video Introduction to Interface Equilibrator - #4 Create a mesh from an input set of 3D points and export mesh's points was uploaded.

28th Mar. 2025

The new tutorial video Introduction to Interface Equilibrator - #3 Load and export meshes as .ietm or .stl files was uploaded.

24th Mar. 2025

The new tutorial video Introduction to Interface Equilibrator - #2 Main equilibration settings was uploaded.

15th Mar. 2025

The new tutorial video Activate a license and use Interface Equilibrator on your computer was uploaded.

27th Feb. 2025

The first public version of Interface Equilibrator (v1.0.0) has been released and can now be downloaded from our Products page.

27th Feb. 2025

Our Terms and Conditions, End-User License Agreement, and Privacy Statement have been prepared and are now available on our website.

9th Dec. 2024

The scientific paper G. Soligno, Interface Equilibrator: Numerical solutions to capillarity and wetting equilibrium and quasi-equilibrium problems, Physics of Fluids 36, 122013 (2024) External link has been published.

27th Aug. 2024

The new tutorial video Introduction to Interface Equilibrator - #1 Basic concepts was uploaded.