大连理工大学学报2011，Vol.51Issue(4)：512-517,6.
水浊度和提热量对太阳池盐梯度层稳定性综合影响
Combined influence of turbidity and heat extraction on stability of salt gradient layer of solar pond
摘要
Abstract
The gravitational stability of NCZ（non-convective zone,also called gradient layer） of solar pond subjected to temperature gradient was researched.The analysis considers solar energy absorption in the layer and assumes certain heat flux values as boundary conditions for the heat-conduction differential equation.The marginal states for the onset of convection were obtained using a Galerkin method based on a weak formulation of the governing equations.The influence of turbidity（extinction coefficient） and heat extraction on the NCZ stability was studied.The analysis of linear stability on the salt gradient layer indicates that the critical stability value Rac is not much susceptible to the turbidity of the water,and a turbid pond tends to a decreasing Rac.Synthetically considering the influence of heat extraction and water turbidity,when the heat extraction f is 0.65-0.70,the influence of water turbidity on stability of NCZ is the least.When f is smaller than this value,Rac increases with the increase of turbidity,and system tends stable;but when f is larger than this value,Rac decreases with the increase of turbidity,and system tends unstable.关键词
太阳池/盐梯度层/线性稳定性/浊度Key words
solar pond/salt gradient layer/linear stability/turbidity分类
能源科技引用本文复制引用
王华,孟凡茂,孙文策,邹家宁..水浊度和提热量对太阳池盐梯度层稳定性综合影响[J].大连理工大学学报,2011,51(4):512-517,6.基金项目
国家自然科学基金资助项目 （）
热能与动力工程河南省特色专业建设资助项目 （）
