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Death eater
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Does ideal fluid have zero surface tension?
What does zero surface tension signify?
What does zero surface tension signify?
The definition of an ideal fluid is only that it has zero viscosity. So it would be allowed to have surface tension and still be considered ideal.Death eater said:Does ideal fluid have zero surface tension?
It would signify that the molecules within the fluid have the same attraction to each other as to the atmosphere at the surface.Death eater said:What does zero surface tension signify?
thanks for answer but if viscosity in liquids is the result of cohesive forces and if viscosity is zero then cohesive forces are 0. If the cohesive forces are zero will the surface tension be zero or positive?.Scott said:The definition of an ideal fluid is only that it has zero viscosity. So it would be allowed to have surface tension and still be considered ideal.
It would signify that the molecules within the fluid have the same attraction to each other as to the atmosphere at the surface.
Here is a link to the wiki article:
https://en.wikipedia.org/wiki/Surface_tension
A near-zero surface tension also tends to indicate that the fluid will readily evaporate.
Surface tension decreases as fluid temperature increases.
Fluids with low surface tension include Diethyl Ether (17.0), liquid Nitrogen (8.5), and liquid Helium II (0.37). In contrast, mercury at 15C has a surface tension of 487.
Unless the surface is an interface to a vacuum, some consideration needs to be given to the fluid above the surface. Then it becomes a comparison between chemical properties of the super fluid and that of the atmospheric fluid. If the interface IS with a vacuum, then we would need to consider whether that is even a stable interface - or if our super fluid will simply fill the vacuum.Death eater said:thanks for answer but if viscosity in liquids is the result of cohesive forces and if viscosity is zero then cohesive forces are 0. If the cohesive forces are zero will the surface tension be zero or positive?
An ideal fluid is a theoretical concept in fluid mechanics that represents a fluid with no viscosity or internal friction. This means that an ideal fluid has no resistance to flow and does not dissipate energy.
No, an ideal fluid is a theoretical concept and does not exist in real life. All fluids in the real world have some level of viscosity and internal friction, though some may come close to ideal behavior under certain conditions.
Surface tension is a property of liquids that describes the force on the surface of the liquid due to the attraction between molecules. In an ideal fluid, there are no intermolecular forces, so surface tension is zero.
Yes, by definition, an ideal fluid has no surface tension because it has no cohesive forces between its molecules. However, in reality, no fluid can be considered truly ideal, so surface tension will always exist to some degree.
Studying ideal fluids with zero surface tension can help scientists and engineers understand the fundamental principles of fluid mechanics. This knowledge can be applied in a wide range of areas, including aerodynamics, hydrodynamics, and the design of fluid systems such as pipelines and pumps.