Numerical investigation on conjugate behavior of heat transfer and its augmentation in a turbulent wall-jet flow on a heated plate in motion

Abstract

The present research involves a computational investigation by adopting a conjugate technique in a turbulent wall jet flow on a moving plate heated isothermally at the bottom. The low-Reynolds-number YS model is adopted for the simulation to predict the thermal and fluid behavior in the near wall regime. The wall jet enters a quiescent environment of Prandtl number of $7$ at a constant Reynolds number of $\mathit{\text{Re}}=15000$ at the inlet. The thermal parameters considered for observing the thermal behavior are solid-fluid conduction ratio $(K),$ plate-jet thickness ratio $(S),$ and plate to jet velocity ratio $(U_p).$ The temperature distributions in the plate domain, temperature at the solid-fluid interface, local Nusselt number, and average Nusselt number provided evidence of the effects of plate movement in the present cases. The plate motion strongly influences the distribution of the local and the averaged Nusselt number along with the temperature at the interface. The average Nusselt number calculated suggests that plate motion is crucial in enhancing heat transfer rate.

Keywords:

• Conjugate heating
• isothermal condition
• low-Reynolds-number model
• moving heated plate
• wall jet

Acknowledgments

The authors appreciate the financial assistance of Science and Engineering Research Board (SERB), Department of Science and Technology, Govt. of India10.13039/501100001843 (File No. $\mathbf{\text{ECR}}/2017/000437$).

Declaring conflicts

The authors declare that there is no conflict.

Ethical approval

This article does not contain any studies with human participants or animals performed by any authors.

Additional information

Funding

Science and Engineering Research Board (SERB), Department of Science and Technology, Govt. of India 10.13039/501100001843, 10.13039/501100001843