Method and device for measuring by penetrometry an interface or surface tension of an interface between two fluids
AssigneeUniversite De Lorraine
InventorsHuai Zhi Li, Nicolas Dietrich
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Abstract
A method is provided for measuring an interfacial tension (σ) for liquid-liquid interfaces or surface tension for liquid-gas interfaces. The method is characterized in that the measurement is carried out by the penetrometry of an interface between two fluids of a sample in a pipe comprising at least one window made of a transparent material, using a rod moving at constant speed orthogonally to the interface, a profile of the interface being deformed by the penetration of the rod and a series of images of the profile being captured in real time by an image-capturing system during the deformation and the crossing of the interface. A device for implementing the method is also disclosed.
Claims12
A method for measuring an interface tension for a liquid-liquid interface or a surface tension for a liquid-gas interface, the method comprising:
- measuring the interface between two fluids of a sample contained in a conduit by using a penetrometer, said conduit having at least one window formed of a transparent material;
- moving at least one rod at a constant speed within said conduit orthogonal to the interface;
- deforming a profile of the interface by the movement of the rod;
- and
- acquiring a series of images of the profile in real time by an image-taking system during the deforming and traversing of the interface.
An apparatus for measuring an interface tension for a liquid-liquid interface or a surface tension for a liquid-gas interface, the apparatus essentially comprising:
- a conduit having at least one transparent window, said conduit containing a measurement sample having two fluids separated by the interface, the interface located within said conduit;
- a rod movable within and along said conduit in a direction orthogonal to the interface such that said rod deforms the interface and passes through the interface;
- an image-taking means for acquiring a series of digital images of a profile of the interface during the deforming of the interface.
Dependencies are inferred from the claim text.