Property of a fluid by which molecules of different kinds of fluids ar...
Attractive forces between molecules of different types are called adhesive forces.
Attractive forces between molecules of the same type are called cohesive forces.
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Property of a fluid by which molecules of different kinds of fluids ar...
Adhesion in Fluid Mechanics
Adhesion is a property of a fluid by which molecules of different kinds of fluids are attracted to each other. Adhesion is an important property of liquids, particularly those that are involved in wetting, spreading, and adhesion. It is also a property that can have an impact on the performance of devices that rely on fluids.
Adhesion vs. Cohesion
Adhesion is often contrasted with cohesion, which refers to the attraction between molecules of the same substance. Cohesion is responsible for the surface tension of water, which allows it to form droplets and maintain a meniscus in a glass. Adhesion, on the other hand, allows water to wet surfaces and stick to them.
Examples of Adhesion
Adhesion is important in a variety of applications, including:
- Wetting: Adhesion allows liquids to wet surfaces, which is important in applications like painting, printing, and coating.
- Adhesives: Adhesion is a key property of adhesives, which rely on the attraction between the adhesive and the substrate to provide a strong bond.
- Lubrication: Adhesion can also be important in lubrication, as it can help reduce friction between surfaces by allowing a thin layer of fluid to adhere to the surfaces.
Conclusion
In summary, adhesion is a property of a fluid by which molecules of different kinds of fluids are attracted to each other. It is an important property that can have an impact on wetting, adhesion, and lubrication. Adhesion is often contrasted with cohesion, which refers to the attraction between molecules of the same substance.
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