Liquid jet trajectory and droplet path influenced by combined cross flow and electric fields. (18th May 2018)

• Record Type: Journal Article
• Authors: Rajabi, A.; Morad, M.R.; Rahbari, N.; Pejman Sereshkeh, S.R.; Razavi, M.
• Is Part Of: Chemical engineering science. Volume 181(2018)
• Page Start: 114
• Page End: 121
• Publication Date: 2018-05-18
• Subjects: Jet trajectory -- Cross flow -- Electrohydrodynamics -- Satellite droplet; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; Chemical engineering; Periodicals; Electronic journals; 660
• DOI: 10.1016/j.ces.2018.01.029
• Languages: English
• ISSNs: 0009-2509

Abstract

Highlights: Liquid jet trajectory is studied in a combination of electric forces and cross flows. Buckingham π theorem analysis is used to find the important dimensionless parameters. A correlation is proposed for the jet trajectory with the combined effects. Droplets path is reported with crossflow speed and electric field intensity. Abstract: This study investigates an ethanol liquid jet subjected to combination of an air crossflow and a normal electric field. The results on the liquid jet trajectory and subsequent droplets flight paths are presented. The liquid jet trajectory was found as a function of two non-dimensional quantities; the liquid jet to the crossflow momentum ratio and the electroinertial number. The electroinertial number is defined as the ratio between the liquid jet specific momentum and the electric force. A correlation is introduced for the jet trajectory in low crossflow speeds and electric field intensities. The same two quantities control the detached droplets flight paths. Satellite droplets flight angles are also reported with a correlation for their separation angle, which can be useful in applications where uniform droplet production is important.