<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This work is an evaluative study of heat transfer in the helical-type heat exchanger. The fluid used is non-Newtonian in nature and is defined by Oswald’s model. The work was performed numerically by solving each of the Navier–Stokes equations and the energy equation using the package ANSYS-CFX. Following are the aspects that have been dealt with in this paper: the effects of thermal buoyancy, fluid nature and the tube shape on the heat transfer, and the fluid comportment. The interpretation of the obtained results was done by analyzing the isotherms and the streamlines. The mean values of the Nusselt number were also obtained in terms of the studied parameters. The results of this research enabled us to arrive at the following conclusion: the intensity of thermal buoyancy and the nature of the fluid affect the heat transfer distribution but keep the overall rate of heat transfer the same.</p>
</abstract>

This work is an evaluative study of heat transfer in the helical-type heat exchanger. The fluid used is non-Newtonian in nature and is defined by Oswald’s model. The work was performed numerically by solving each of the Navier–Stokes equations and the energy equation using the package ANSYS-CFX. Following are the aspects that have been dealt with in this paper: the effects of thermal buoyancy, fluid nature and the tube shape on the heat transfer, and the fluid comportment. The interpretation of the obtained results was done by analyzing the isotherms and the streamlines. The mean values of the Nusselt number were also obtained in terms of the studied parameters. The results of this research enabled us to arrive at the following conclusion: the intensity of thermal buoyancy and the nature of the fluid affect the heat transfer distribution but keep the overall rate of heat transfer the same.

Behaviour of a Non-Newtonian Fluid in a Helical Tube Under the Influence of Thermal Buoyancy

Oran University of Science and Technology - Mohamed Boudiaf

Laboratory of Sciences and Marine Engineering, Faculty of Mechanical Engineering

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This work is an evaluative study of heat transfer in the helical-type heat exchanger. The fluid used is non-Newtonian in nature and is defined by Oswald’s...

Behaviour of a Non-Newtonian Fluid in a Helical Tube Under the Influence of Thermal Buoyancy

Data publikacji: 24 mar 2022

Zakres stron: 111 - 118

Otrzymano: 01 gru 2021

Przyjęty: 07 lut 2022

DOI: https://doi.org/10.2478/ama-2022-0014

Słowa kluczowe
helical heat exchanger, mixed convection, forced convection, power-law fluids, Nusselt number

© 2022 Mohamed Ramla et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Behaviour of a Non-Newtonian Fluid in a Helical Tube Under the Influence of Thermal Buoyancy

Data publikacji: 24 mar 2022

Zakres stron: 111 - 118

Otrzymano: 01 gru 2021

Przyjęty: 07 lut 2022

DOI: https://doi.org/10.2478/ama-2022-0014

Słowa kluczowehelical heat exchanger, mixed convection, forced convection, power-law fluids, Nusselt number

© 2022 Mohamed Ramla et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Słowa kluczowe
helical heat exchanger, mixed convection, forced convection, power-law fluids, Nusselt number