Jet breakup and drop formation in the centrifugal field influenced by a gas flow - variation of geometric boundary conditions

受气流影响的离心场中射流破碎和液滴形成 - 几何边界条件的变化

• 批准号: 120672036
• 负责人: Professor Dr.-Ing. Manfred Piesche
• 金额: --
• 依托单位: Institut für Mechanische Verfahrenstechnik (IMVT)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/120672036?language=en
• 关键词: Jet; breakup; drop; formation; centrifugal

During the last two periods of the project model-theoretical basics were worked out for the breakup of a stretched, viscous, particle laden, laminar liquid jet in the centrifugal field. Additionally the influence of an imposed gas flow was taken into account. Based on a stability analysis, model rules and similarity laws describing jet breakup an droplet size were derived. Experiments for single jets were carried out supporting our mathematical-physical considerations. The aim (of the third period of the project) is to compare and to transfer the model to atomizers with several nozzles and flume flows, respectively. For further validation of the model and to increase the scope of application additional experimental studies for single jets will be realized. Optical methods for the investigation of the three-dimensional jet behaviour provide information about jet path and jet breakup. Moreover they enable the derivation of universal laws concerning droplet size and droplet size distribution as a function of geometrical boundary conditions, material properties and operating conditions.

在项目模型的最后两个阶段，为离心场中拉伸的、粘性的、载有颗粒的层流液体射流的破裂制定了理论基础。此外，还考虑了外加气流的影响。在稳定性分析的基础上，导出了描述射流破碎和液滴尺寸的模型规则和相似律。单射流的实验进行了支持我们的物理的考虑。（项目第三阶段）的目的是比较和转移模型，分别与几个喷嘴和水槽流量的雾化器。为了进一步验证模型和扩大应用范围，将对单股射流进行额外的实验研究。用于研究三维射流行为的光学方法提供了关于射流路径和射流破碎的信息。此外，他们能够推导出有关液滴尺寸和液滴尺寸分布的几何边界条件，材料性能和操作条件的函数的普遍规律。

项目成果

Numerical and experimental investigations on the breakup of particle laden liquid jets in the centrifugal field

离心场中颗粒加载液体射流破碎的数值和实验研究

• DOI: 10.1016/j.ces.2012.08.011
• 发表时间: 2012
• 期刊: Chemical Engineering Science
• 影响因子: 4.7
• 作者: Gramlich S;Piesche M.
• 通讯作者: Piesche M.

Modellierung, Simulation und experimentelle Verifikation des Zerfalls von Flüssigkeitsstrahlen und der Tropfenbildung im Zentrifugalfeld

液体射流衰减和离心场中液滴形成的建模、模拟和实验验证

• 发表时间: 2013
• 期刊: Chemie Ingenieur Technik
• 影响因子: 1.9
• 作者: Gramlich;Piesche M.
• 通讯作者: Piesche M.