Related Experiment Video

Updated: Apr 12, 2026

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Published on: April 10, 2017

Thermo-hydraulic performance optimization of different louvered strip inserts inside a heated tube employing Al₂O₃

Bandar Awadh Almohammadi¹, H A Refaey^2,3, Abdullah M A Alsharif¹

¹Department of Mechanical Engineering, College of Engineering in Yanbu, Taibah University, Yanbu Al-Bahr, 41911, Saudi Arabia.

Scientific Reports

|April 10, 2026

Abstract:

Louvered strip insert (LSI) within heat exchangers is a widely used method for enhancing performance. However, optimization analysis on such inserts with many design parameters is limited in the literature. In accordance, the present study aims to conduct a thermo-hydraulic performance optimization. Using a surrogate-based optimization approach accompanied by 3D full numerical simulations. Four parameters are varied simultaneously namely: the slant angle (θ) between 5° and 39°, the pitch (P) between 85 mm and 106 mm, the Reynolds number (Re) range of 500 - 13,000, and the nanofluid concentrations (ϕ) between 0% and 2%. Two nanofluids are tested: Al₂O₃, and CuO using water as the base fluid. The LSI is installed in the forward direction to the fluid inlet inside a tube with a diameter (D) of 14.3 mm and a length (L) of 2219 mm.The optimization analysis is based on both boosting the heat transfer amount and the degradation of the friction factor through five performance indices. The results revealed that CuO nanofluid performs better than other tested fluids. A maximum overall performance factor of 2.61 is reached at optimum values of the design parameters Re, ϕ, θ, and P as: 500, 0.82%, 35°, and 105.37 mm, respectively. This work is useful for the optimum design of heat exchanger devices.

Keywords:

Heat transfer Louvered strip inserts Nanofluids Optimization Pressure drop Slant angle

More Related Videos

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel

Published on: October 5, 2018

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Multifunctional Hybrid Fe2O3-Au Nanoparticles for Efficient Plasmonic Heating

Published on: February 20, 2016

Related Concept Videos

Mechanisms of Heat Transfer II

Mechanisms of Heat Transfer II

In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...

Mechanisms of Heat Transfer

Mechanisms of Heat Transfer

Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...

Mechanisms of Heat Transfer I

Mechanisms of Heat Transfer I

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.

Mechanism of heat transfer

Mechanism of heat transfer

Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...

Steady, Laminar Flow in Circular Tubes

Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...

Articles linked to this work by shared authors, journal, and citation graph.

Experimental evaluation of a cost-effective tesla turbine for waste air energy recovery in transportation systems.

Scientific reports·2026

Pairing taguchi based design of experiment with response surface methodology for diesel engine performance optimization using biodiesel-magnesium oxide nanoparticles blends.

PloS one·2026

Determining the appropriate natural fibers for intelligent green wearable devices made from biomaterials via multi-attribute decision making model.

Heliyon·2024

See all related articles