中文摘要：

超重力真空的形成是超重力真空海水淡化技术实现的前提条件,而超重力蒸发室的结构和操作参数对超重力真空的形成会产生重要影响。借助CFD软件建立了二维轴对称旋转非稳态两相空穴湍流模型,对超重力真空形成过程及超重力蒸发室主要参数的影响进行了仿真实验。结果表明,溢流堰高度对超重力真空的形成有决定性的影响,最小溢流堰高度可根据结构和操作参数确定;增大超重力蒸发室内径、转速、出口间隙和蒸发腔高度,降低出口压强有利于获得超重力真空并增大其体积。根据模拟结果推荐了各结构和操作参数的实际取值范围,并提出了通过排列组合超重力蒸发室达到产水要求的方案。

英文摘要：

Super gravity vacuum is a premise condition of super gravity vacuum evaporation desalination. Structural and operational parameters of Super-GravityEvapomtor （SGE） have great influences on the formation of super gravity vacuum. Atwo-dimensional, axisymmetric-rotating, tmsteady,two-phase-cavitation, turbulent model is built in virtue of CFD software, to simulate the formation of super gravity vacuum and the effects of major parameters of SGE.The results show that the overflow weir height directly determines whether the super gravity vacuum can form,and its minimum can be calculated according to the structural and operational parameters. Increasing SGE interior diameter, rotationalspeed, outlet clearance and the height ofevaporator chamber, and reducing outlet pressure are beneficial to the formation of the super gravity vacuum and enlarge its volume. Based on the simulating results, actual values ofeachparameter are recommended, and schemes of SGE arrangements are discussed to meet different water production requirements.