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大型海水淡化装置流场数值模拟及其优化 总被引：2，自引：0，他引：2
利用计算流体力学软件Phoenics对海水淡化装置中的闪发腔内的流场进行计算,并分析绕流板的设置对湍流度的影响。由于以往对提高海水淡化装置特别是多级闪发装置(MultiStageFlashMSF)效率的研究多局限于提高热效率的方面,或者是采用化学的方法,而忽视了从流体力学角度通过改变闪发腔内流动情况来提高效率。因此,本文通过对海水淡化装置闪发腔内流动情况的数值模拟,探索提高效率的方法。 相似文献
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A numerical model using a hybrid formulation of a finite element method (FEM) coupled with the volume of fluid (VOF) technique to simulate the fracture grouting processes in soils is described. The numerical model considered the couplings of the stress distribution, with two-phase fluid flows, and the mesh element damage. The hardening of grout in soil is described by a time-dependent Young’s modulus and viscosity. Crack initiation, branching, propagation, and grout vein growth in homogeneous and heterogeneous soils can be numerically reproduced. Although the method is developed particularly for simulating fracture grouting, the processes of compaction grouting and permeation grouting can also be numerically simulated. Some grouting cases have been simulated with results similar to the experimental results. This further confirms the adequacy and the power of the numerical approach. 相似文献
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