A. A. Safronov, A. A. Koroteev, A. E. Agafonov, A. L. Grigor’ev, N. I. Filatov, A. V. Khlynov
{"title":"粘性射流自发弯曲机理的实验研究","authors":"A. A. Safronov, A. A. Koroteev, A. E. Agafonov, A. L. Grigor’ev, N. I. Filatov, A. V. Khlynov","doi":"10.1134/S0015462824605515","DOIUrl":null,"url":null,"abstract":"<p>The mechanisms of the bending flow of a viscous jet (Ohnesorge number greater than 0.05) flowing out of a capillary channel at a low velocity (Weber number is about unity) are experimentally investigated. The bending is due to the effect of internal forces and is not related with the interaction between the liquid and the atmosphere, which is confirmed by experiments performed in a vacuum chamber. A region of intense jet bending amounting to fifteen degrees is formed near the channel end section, at a distance of the jet diameter. Further downstream the jet is “straightened,” the angle of bending being reduced. The dependences of the greatest and overall bending angles on the jet velocity are obtained for different Ohnesorge numbers. The velocities, at which the deflection is maximum, are revealed. The deviation angle values corresponding to large velocities are determined.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"60 2","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental Investigation of the Mechanisms of Spontaneous Bending of a Viscous Jet\",\"authors\":\"A. A. Safronov, A. A. Koroteev, A. E. Agafonov, A. L. Grigor’ev, N. I. Filatov, A. V. Khlynov\",\"doi\":\"10.1134/S0015462824605515\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The mechanisms of the bending flow of a viscous jet (Ohnesorge number greater than 0.05) flowing out of a capillary channel at a low velocity (Weber number is about unity) are experimentally investigated. The bending is due to the effect of internal forces and is not related with the interaction between the liquid and the atmosphere, which is confirmed by experiments performed in a vacuum chamber. A region of intense jet bending amounting to fifteen degrees is formed near the channel end section, at a distance of the jet diameter. Further downstream the jet is “straightened,” the angle of bending being reduced. The dependences of the greatest and overall bending angles on the jet velocity are obtained for different Ohnesorge numbers. The velocities, at which the deflection is maximum, are revealed. The deviation angle values corresponding to large velocities are determined.</p>\",\"PeriodicalId\":560,\"journal\":{\"name\":\"Fluid Dynamics\",\"volume\":\"60 2\",\"pages\":\"\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2025-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fluid Dynamics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0015462824605515\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MECHANICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Dynamics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0015462824605515","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MECHANICS","Score":null,"Total":0}
Experimental Investigation of the Mechanisms of Spontaneous Bending of a Viscous Jet
The mechanisms of the bending flow of a viscous jet (Ohnesorge number greater than 0.05) flowing out of a capillary channel at a low velocity (Weber number is about unity) are experimentally investigated. The bending is due to the effect of internal forces and is not related with the interaction between the liquid and the atmosphere, which is confirmed by experiments performed in a vacuum chamber. A region of intense jet bending amounting to fifteen degrees is formed near the channel end section, at a distance of the jet diameter. Further downstream the jet is “straightened,” the angle of bending being reduced. The dependences of the greatest and overall bending angles on the jet velocity are obtained for different Ohnesorge numbers. The velocities, at which the deflection is maximum, are revealed. The deviation angle values corresponding to large velocities are determined.
期刊介绍：
Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.
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