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.

在项目模型理论基础的最后两个时期中，为离心场中的伸展，粘性，颗粒，层状液体射流的分解而进行了。另外，考虑了施加的气流的影响。基于稳定性分析，得出了描述喷气破裂大小的模型规则和相似性定律。进行了单个喷气机的实验，以支持我们的数学形态考虑。 （项目的第三阶段）的目的是将模型分别分别用几个喷嘴和水槽流进行比较并将其传递给雾化器。为了进一步验证模型并增加应用范围，将实现单个喷气机的其他实验研究。研究三维喷气行为的光学方法提供了有关喷气路径和喷气破裂的信息。此外，它们可以推导有关液滴大小和液滴大小分布的普遍定律，这是几何边界条件，材料特性和工作条件的函数。

项目成果

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.

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.