|Table of Contents|

Influence of dimensionless parameters on flow pattern of submerged impinging jet


Research Field:
Publishing date:


Influence of dimensionless parameters on flow pattern of submerged impinging jet
Zhao LiqingSun Jianhong
College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China
impinging jet flapping motion lattice Boltzmann method dimensionless parameter
In order to study the influence of dimensionless parameters on the flow pattern of submerged impinging jet,a submerged plane jet impinging onto a free surface is investigated based on the free energy lattice Boltzmann method for a given water depth and different Froude numbers,Reynolds numbers and Weber numbers.The flow patterns are obtained for different working conditions.Combined with the experimental data,dimensionless parameters influencing the flow pattern are studied including Froude number,Reynolds number and Weber number.Results show that for a given value of jet-exit-width,there appear to be critical Reynolds number and critical Weber number and if the Reynolds number or Weber number of jet is larger than the corresponding critical value,the jet flaps.On the other hand,the jet can be in a flapping mode if Froude number is greater than a critical value.It is suggested that the critical Froude number can be used as a critical parameter for the onset of flapping motion.


[1] Madarame H,Iida M,Okamoto K,et al.Jet-flutter:self-induced oscillation of upward plane jet impinging on free surface[A].Asia-Pacific Vibration Conference'93[C].Kitakyushu:The Japan Society of Mechanical Engineers,1993:265-270.
[2]Sun J H,Zhao L Q,Hsu C T.Theoretical analyses on flapping motion of submerged turbulent plane jets[J].Modern Physics Letters B,2005,19(28-29):1471-1474.
Mi Jianchun,Li Pengfei.Low NOx self-excited oscillating-jet burners[J].Proceedings of the CSEE,2010,30(8):32-38.
[4]Wu S,Rajaratnam N,Katopodis C.Oscillating vertical plane turbulent jet in shallow water[J].Journal of Hydraulic Research,1998,36(2):229-234.
[5]Hsu C T,Kuang J,Sun J H.Flapping instability of vertically impinging turbulent plane jets in shallow water[J].Journal of Engineering Mechanics,2001,127(5):411-420.
[6]Espa P,Sibilla S,Gallati M.SPH simulations of a vertical 2-D liquid jet introduced from the bottom of a free surface rectangular tank[J].Advances and Application in Fluid Mechanics,2008,3(2):105-140.
[7]Zhao L Q,Wu D,Sun J H.Simulation of a vertical turbulent plane jet in shallow water using a phase-field lattice Boltzmann method[A].8th Asian Computational Fluid Dynamics Conference[C].Hong Kong:The Hong Kong University of Science and Technology,2010:ACFD0189.
[8] Takada N,Tomiyama A.A numerical method for two-phase flow based on a phase-field model[J].JSME International Journal Series B-Fluids and Thermal Engineering,2006,49(3):636-644.
[9]Zheng H W,Shu C,Chew Y T.A lattice Boltzmann model for multiphase flows with large density ratio[J].Journal of Computational Physics,2006,218(1):353-371.
Zhang Bo,Wang Limin,Wang Xiaowei,et al.Discrete particle simulation of bubbling bed with jet flow at a single orifice based on the lattice Boltzmann method[J].Chinese Science Bulletin,2013,58(2):158-169.
Li Qiang,Yu Kai,Xuan Yimin.LBM parallel computation for flow and heat transfer of nanofluids[J].Journal of Nanjing University of Science and Technology,2005,29(6):631-635.
[12]Zhao L Q,Sun J H,Xu C Y.Flow field analyses of plane jet at low Reynolds numbers using lattice Boltzmann method[J].Transactions of Nanjing University of Aeronautics and Astronautics,2012,29(3):199-206.
[13]Prosperetti A.Motion of two superposed viscous fluids[J].Physics of Fluids,1981,24(7):1217-1223.
[14]Sun J H.Flapping turbulent plane jets in shallow water and interacting with surface waves[D].Hong Kong:Department of Mechanical Engineering,The Hong Kong University of Science and Technology,2001.


Last Update: 2013-08-31