Related Experiment Video
Updated: Aug 3, 2025

07:32
Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
Published on: April 10, 2017
9.1K
Heat Transfer and Fluids Properties of Nanofluids
1IDMEC, Department of Mechanical Engineering, Instituto Superior Tecnico, University of Lisbon, 1049-001 Lisbon, Portugal.
Nanomaterials (Basel, Switzerland)
|April 13, 2023
Summary
Research on nanofluids shows enhanced thermal properties but lacks consensus on mechanisms and stability. This special issue addresses these critical areas for advancing nanofluid applications.
Area of Science:
- Nanofluidics and thermal transport phenomena.
Background:
- Nanofluids demonstrate potential for improved thermophysical properties and heat transfer over conventional fluids.
- Significant research exists, yet consensus on enhancement mechanisms and performance metrics remains elusive.
- Key challenges include achieving stable nanofluid formulations and maintaining persistent properties over time.
Discussion:
- This Special Issue compiles high-quality research and reviews on diverse nanofluid types.
- Focus areas include thermophysical, electrical, convective, and boiling heat transfer characteristics.
- Addresses critical issues hindering widespread nanofluid adoption and application.
Key Insights:
- Varied conclusions exist regarding nanofluid enhancements and their underlying physics.
- Convective and boiling heat transfer performance are crucial but debated aspects.
- Sustainable stability and long-term property retention are major hurdles.
Outlook:
- This collection is vital for the progress of nanofluid technology.
- Facilitates real-world applications by clarifying performance and stability challenges.
- Advances understanding of nanofluids for future thermal management solutions.
Related Concept Videos
Characteristics of Fluids
4.1K
When a force is applied parallel to the top surface of a solid, it resists the applied force due to the internal frictional forces between the layers of the solid known as shearing resistance. However, when the force is removed, the shearing forces restore the original shape of the solid. Other deformation forces also cause temporary changes in shape if the forces are not beyond a threshold magnitude. Solids tend to retain their shape, making the study of their rest and motion easier. Beyond...
4.1K
Newtonian Fluid: Problem Solving
299
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
299
Types of Fluids
365
Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
365
Viscosity of Fluid
503
Viscosity measures the resistance a fluid offers to flow and deformation. It results from internal friction between layers of fluid moving relative to one another. Dynamic viscosity, denoted by the Greek letter mu (μ), quantifies the force needed to move one fluid layer over another. For Newtonian fluids like water and air, the relationship between the shearing stress and the rate of shearing strain is linear, meaning their viscosity remains constant regardless of the applied stress.
503
Mechanisms of Heat Transfer I
4.4K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.4K
Viscosity
5.9K
When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. This property of fluids is called fluid viscosity. In this example, water has a lower viscosity than honey and maple syrup.
The SI unit of viscosity is...
The SI unit of viscosity is...
5.9K

