Generating a database to validate CFD simulations using a pilot-plant scale bubble column operating with water and ethanol

在客人入住期间，应建立中试规模鼓泡塔的验证数据库，这将有助于提高CFD模型的预测能力。为此，计划在米兰理工学院的鼓泡塔中进行实验，以在不同的操作点使用两种不同的气体分布器进行空气/水以及空气/水-乙醇。该设施直径为0.24米，高5.3米。在过去，合作伙伴已经为预期的实验测量了局部气泡尺寸分布和气含率。然而，对于合理的模型验证，液体速度是必要的，但缺乏可实现的测量技术。在博士研究期间，申请人开发了一种可以进行测量的测量方法，并于今年5月在米兰的设施进行了测试。将获得的数据尚未在大型鼓泡塔的详细程度上公布，迫切需要进行验证。研究结果将发表在著名的国际期刊上，并将提供给其他国际研究小组;此外，研究结果将成为后续合作的基础。

During the guest stay, a validation database for pilot-plant scale bubble columns, which will help to improve the predictive capability of CFD models, shall be build up. For this purpose, experiments at a bubble column at the polytechnic institute of Milan are planned for air/water as well as air/water-ethanol at different operation points using two different gas spargers. The facility is 0.24 m in diameter with a height of 5.3 m. In the past, the cooperation partner already measured the local bubble size distributions and gas holdups for the intended experiments. For a reasonable model validation, however, the liquid velocity is necessary; but a realizable measuring technique was missing. During his doctoral studies, the applicant developed a measuring method with which the measurements are possible, which was tested at the facility in Milan in May this year. The data that will be obtained are not yet published in such a level of detail for large bubble columns and are urgently needed for validation. The results will be published in prestigious international journals and will be provided to other international research groups; further, the results will be the basis for the following cooperation.