Conjugate Heat Transfer Analysis for Cooling of a Conductive Panel by Combined Utilization of Nanoimpinging Jets and Double Rotating Cylinders

In this work, double rotating active cylinders and slot nanojet impingement are considered for the cooling system of a conductive panel. Colder surface temperatures of the cylinders are used, while different rotational speeds are assigned for each of the cylinders. The impacts of cylinder rotational speeds, size and distance between them on the cooling performance are evaluated. The rotational effects and size of the cylinders are found to be very effective on the overall thermal performance. At the highest rotational speeds of the cylinders, the average Nusselt number (Nu) rises by about 30.8%, while the panel temperature drops by about 5.84 degrees C. When increasing the cylinder sizes, temperature drops become 7 degrees C, while they are only 1.75 degrees C when varying the distance between the cylinders. Subcooling and nanofluid utilization contributes positively to the cooling performance, while 1.25 degrees C and 10 degrees C temperature drops are found by varying the subcooled temperature and solid volume fraction. An artificial neural network is used for the estimation of maximum and average panel temperatures when double cylinder parameters are used as the input.

Automated summary

In this study, the application of double rotating active cylinders and slot nanojet impingement for the cooling system of a conductive panel is considered. The effects of cylinder rotational speeds, size, and distance between them on the cooling performance are evaluated, revealing that the rotational effects and size of the cylinders significantly impact the thermal performance. Furthermore, subcooling and nanofluid utilization are found to contribute positively to the cooling performance. The estimation of maximum and average panel temperatures using an artificial neural network is also discussed.