Numerical modelling of study the effect of the entrainment velocity, the number of Nusselt and the thickness of the non-convective zone on the stability of the pond solar

Authors : Sabrina GHERAİBİA, Amar GUESMIA

Pages : 918-933

Doi:10.15672/hujms.816059

View : 21 | Download : 6

Publication Date : 2021-08-06

Article Type : Research Paper

Abstract :In this paper, the effect of the entrainment velocity, the Nusselt number, and the thickness of the salinity gradient zone $insert ignore into journalissuearticles values(NCZ);$ on the stability of the solar pond are studied. The modelling equations of thermal energy and mass transfer in a salt gradient solar pond are discretized by finite difference methods in the transient regime. A new border condition applicable near the equilibrium of interface between the $insert ignore into journalissuearticles values(NCZ);$ and the $insert ignore into journalissuearticles values(LCZ);$ region is proposed. We take account of the effects of both turbulent entrainment and diffusion on the growth or erosion of the gradient zone $insert ignore into journalissuearticles values(NCZ);$. The obtained numerical results show an additional condition of solar pond`s stability which links between the salinity gradient $\leftinsert ignore into journalissuearticles values( \Delta C\right); \ $ and the temperature gradient $\leftinsert ignore into journalissuearticles values( \Delta T\right);$ in the $insert ignore into journalissuearticles values(NCZ);$ region.
Keywords : Solar pond, Entrainment velocity, Finite difference method