Ansys simulation of natural convection and radiation in a solar enclosure

Kuharat, S; Beg, OA

Abstract

The interest in sustainable and renewable energy systems has witnessed significant expansion in the 21st century. Space solar power (SSP) collectors have multiple advantages over earth-based solar power plants. They receive more sun light, are unaffected by weather, free from the day-night cycle and expensive storage can be avoided. The types of geometric designs, which have been developed for spacecraft solar collectors are generally similar to those of terrestrial systems. They invariably feature an enclosure (cavity) in which the solar radiation initiates and sustains a circulation flow field. The thermo-physics inevitably involves all three modes of heat transfer (conduction, convection and radiation) although the individual contributions may vary with the particular design adopted, as elaborated by Kreith [1].
The study employs the SIMPLE algorithm [2] and two radiative flux models: Rosseland diffusion [3] and Traugott P1-differential radiative transfer models [4] which can be used to simulate radiative-convective two-dimensional time-independent flow in a rectangular enclosure. Numerical validation is performed with a Harlow-Welch marker and cell code [5]. To evaluate the influence of aspect ratio, Prandtl number (Pr), Rayleigh number (Ra) and the radiative flux model on the temperature, isotherms, velocity, pressure and streamline distribution.

Citation

Kuharat, S., & Beg, O. (2018, August). Ansys simulation of natural convection and radiation in a solar enclosure. Poster presented at ICHTFM 2018 : 20th International Conference on Heat Transfer and Fluid Mechanics, Istanbul, Turkey

• Presentation Conference Type: Poster
• Conference Name: ICHTFM 2018 : 20th International Conference on Heat Transfer and Fluid Mechanics
• Conference Location: Istanbul, Turkey
• Start Date: Aug 16, 2018
• End Date: Aug 17, 2018
• Acceptance Date: Jul 19, 2018
• Deposit Date: Jul 20, 2018
• Related Public URLs: https://waset.org/conference/2018/08/istanbul/ICHTFM
• Additional Information: Event Type : Conference