高放废液贮槽气镇器搅拌系统的数值模拟研究

以后处理厂高放废液贮槽气镇器搅拌系统为模拟对象，其中气相、液相和固相分别为空气、硝酸钠水溶液和球磨后的钛白粉，基于颗粒动力学理论，建立适用于高放废液贮槽气镇器搅拌系统的气、液、固三相流动的数学模型，用CFD商用计算软件对其进行计算，得到了高放废液贮槽气镇器搅拌过程中气、液和固三相的速度、压力和相含率等详细数据。研究结果表明，计算值与实验值吻合较好，验证了建立的数学模型的正确性和适用性，为高放废液贮槽气镇器搅拌系统进一步优化设计和放大提供参考。

Numerical Simulation on Stir System of Jet Ballast in High Level Liquid Waste Storage Tank

The stir system of jet ballast in high level liquid waste storage tank was simulation object. Gas, liquid and solid were air, sodium nitrate liquor and titanium whitening, respectively. The mathematic model based on three-fluid model and the kinetic theory of particles was established for the stir system of jet ballast in high level liquid waste storage tank. The CFD software by commerciality was used for solving this model. The detail flow parameters as three phase velocity, pressure and phase loadings were gained. The calculated results agree with the experimental results, so they can well define the flow behavior in the tank. And this offers a basic method for the scale-up and optimization design of the stir system of jet ballast in high level liquid waste storage tank.