论文部分内容阅读
通过实验研究和数值模拟的方法对熔盐堆脱气系统中旋叶式气泡分离器的工作原理进行研究;对照实验现象和数值模拟得到的流场分布,对气泡汇集、聚合和最终气芯的形成过程进行分析。结果表明:水在搅浑叶片的导流作用下会形成一种存在较大径向压力梯度的旋转流动,且径向压力梯度提供的向心力大于流体旋转运动产生的离心力,使得水流中的气泡流向分离器中心;分离器中心区域的径向压力梯度很大且气泡相对运动速度很低,满足气泡发生聚合的条件,因而汇集到中心的气泡会聚合并最终形成稳定的气芯,从而实现对流体中气相的连续分离。
The working principle of the rotary vane bubble separator in the de-gassing system of molten salt reactor is studied through experimental research and numerical simulation. The flow field distribution obtained by numerical simulation is compared with the results of bubble collection, polymerization and final air core Formation process analysis. The results show that the water will form a rotating flow with a large radial pressure gradient under the action of the muddy blade, and the radial pressure gradient provides a centripetal force greater than the centrifugal force generated by the rotational movement of the fluid, so that the flow of bubbles in the water flow is separated In the center of the separator, the radial pressure gradient is very large and the relative velocity of bubbles is very low, which meets the conditions of the polymerization of the bubbles. As a result, the air bubbles collected in the center will aggregate and form a stable air core finally, Continuous separation of gas phase.