This paper presents results of measurements performed in uncovered baffled and unbaffled stirred tanks. The Laser Doppler Anemometry (LDA) set consists of a 300 mW argon-ion laser generating two pairs of blue and green beams. Additionally, three turbulence models are verified to simulate mixing dynamics in uncovered baffled and unbaffled stirred tanks. Simulations are performed using both the steady- and the transient-state approach. The unbaffled tank was modeled using both the single- and the multiphase approaches. The cited correlations of the central vortex depth are used to verify the multiphase calculations. In order to reduce the computational time, a simplified numerical model is proposed. It assumes a single-phase simulation without the central vortex. The flow fields below the central vortex level are compared between the single- and the multiphase approach. The simplified model can be used both to design and optimize the mixing process.

中文翻译：

---

在无挡板和无挡板搅拌罐中模拟混合动力学

本文介绍了在无挡板和无挡板搅拌罐中进行的测量结果。激光多普勒风速仪 (LDA) 装置由 300 mW 氩离子激光器组成，可产生两对蓝色和绿色光束。此外，还验证了三个湍流模型，以模拟无挡板和无挡板搅拌罐中的混合动力学。使用稳态和瞬态方法进行模拟。使用单相和多相方法对无挡板水箱进行建模。中心涡深度的引用相关性用于验证多相计算。为了减少计算时间，提出了一个简化的数值模型。它假设没有中心涡流的单相模拟。中心涡流水平以下的流场在单相和多相方法之间进行了比较。简化模型可用于设计和优化混合过程。