Work

A study on different methods to change the Rayleigh number in the analysis of heat transfer

Year: 2025

Type: article

Abstract: This study provides awareness about natural convection and associated non-dimensional numbers like the Prandtl number, Grashof number, Rayleigh number, and Reynolds number. The main focus of this research is to present the different methods employed to vary the Rayleigh number [Formula: see text] in an extensive range. The research concludes that changing the gravity value to obtain the considerable variation in [Formula: see text] is also a possible method for conducting the numerical analysis and observing the impact of the Rayleigh number. The validation of the numerical scheme with existing literature is provided here. An attempt is made to show that similar effects could be obtained by changing the value of gravity and the body's characteristics length. The comparative results obtained by changing length and gravity are presented which gives almost the same result [Formula: see text]error) to get the same [Formula: see text]. This presents the beauty of a non-dimensional study. Moreover, it is possible to say that in the non-dimensional analysis of engineering practice, the individual variables that are changed are not important considering the non-dimensional results.

Source: Scientific Reports

DOI: 10.1038/s41598-025-11120-9

Authors: Vikrant Chandrakar, Atul Bhattad, Priyaranjan Samal, Jnana Ranjan Senapati, Abhishek Kumar Kashyap

Institutions: Koneru Lakshmaiah Education Foundation, National Institute of Technology Rourkela, Manipal Academy of Higher Education

Language: English

Topic: Heat Transfer and Numerical Methods

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

OpenAlex ID: W4412475774