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| 水浊度和提热量对太阳池盐梯度层稳定性综合影响 | |
| 引用本文： | 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. |
| 作者姓名： | 王华 孟凡茂 孙文策 邹家宁 |
| 作者单位： | 1. 大连理工大学能源与动力学院,辽宁大连116024 河南理工大学机械与动力工程学院,河南焦作454000 2. 河南理工大学机械与动力工程学院,河南焦作,454000 3. 大连理工大学能源与动力学院,辽宁大连,116024 4. 河南理工大学现代教育中心,河南焦作,454000 |
| 基金项目： | 国家自然科学基金资助项目(50676016); 热能与动力工程河南省特色专业建设资助项目(508027) |
| 摘 要： | 研究了太阳池非对流层在温度梯度作用下的重力稳定性问题.考虑了池水对于太阳辐射的吸收,并假设边界上一定的热通量为导热微分方程的边界条件,基于控制方程的弱解形式采用Galerkin方法得到对流开始发生的临界条件.给出了池水的浊度（消光系数）和提热量f对于非对流层（也叫梯度层）稳定性的影响.结果表明,临界稳定值Rac受水体浊度的影响很小,当浊度变大后,Rac略有下降;考虑提热量f和浊度的综合影响,当f为0.65～0.70时,池水浊度对梯度层稳定性的影响最小;当f小于此范围时,随着梯度层内浊度的增大,Rac增大,系统趋向稳定;当f大于此范围时,随着梯度层浊度的增大,Rac减小,系统趋向于不稳定. |
| 关 键 词： | 太阳池 盐梯度层 线性稳定性 浊度 |
Combined influence of turbidity and heat extraction on stability of salt gradient layer of solar pond |
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| WANG Hu,MENG Fanmao,SUN Wence,ZOU Jianing.Combined influence of turbidity and heat extraction on stability of salt gradient layer of solar pond[J].Journal of Dalian University of Technology,2011,51(4):512-517. | |
| Authors: | WANG Hu MENG Fanmao SUN Wence ZOU Jianing |
| Institution: | WANG Hua1,2,MENG Fan-mao2,SUN Wen-ce1,ZOU Jia-ning3(1.School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,China,2.School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,3.Modern Educational Technology Center,China) |
| 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... |
| Keywords: | solar pond salt gradient layer linear stability turbidity |
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