2D Simulation of Micro-Jet Excitation by Heat Source





micro-jet, excitation, discharge, instability, modelling


Excitation of a laminar gas micro-jet by acoustic impact and by pulse-periodic heat source was simulated using the FlowVision software package in 2D formulation at normal conditions. Heat source imitates an electrical discharge. Air jet was formed by channel with inner size of 0.7 mm with the Poiseuille velocity profile at inlet boundary, the maximum profile velocity was varied in a range of 2.5–10 m/s. Influence of heat source frequency and power on the large-scale vortex formation was described. In the case of a jet with a speed of 5 m/s, the natural oscillations of the jet in response to a single pulse had a frequency fres = 1380 Hz, so excitation of the jet was possible at close frequencies of 1190 Hz and 1500 Hz. At the same time, at a frequency of 1000 Hz (approximately equal to 2/3 fres), every second impulse acted in antiphase and the oscillations developed poorly. Dependence of flow structure from the jet velocity was obtained. The results obtained show the possibility of exciting a micro-jet using low-power electrical discharges such as spark, DBD or corona.


Reynolds, W.C., Parekh, D.E., Juvet, P.J.D., Lee, M.J.D.: Bifurcating And Blooming Jets. Annual Review of Fluid Mechanics 35(1), 295–315 (2003). https://doi.org/10.1146/annurev.fluid.35.101101.161128

Oh, J., Heo, P., Yoon, Y.: Acoustic excitation effect on NOx reduction and flame stability in a lifted non-premixed turbulent hydrogen jet with coaxial air. International Journal of Hydrogen Energy 34(18), 7851–7861 (2009). https://doi.org/10.1016/j.ijhydene.2009.07.050

Gau, C., Shen, C.H., Wang, Z.B.: Peculiar phenomenon of micro-free-jet flow. Physics of Fluids 21(9), 092001 (2009). https://doi.org/10.1063/1.3224012

Yoshida, H., Koda, M., Ooishi, Y., et al.: Super-mixing combustion enhanced by resonance between micro-shear layer and acoustic excitation. International Journal of Heat and Fluid Flow 22(3), 372–379 (2001). https://doi.org/10.1016/S0142-727X(01)00103-5

Krivokorytov, M.S., Golub, V.V., Volodin, V.V.: The effect of acoustic oscillations on diffusion combustion of methane. Technical Physics Letters 38(5), 478–480 (2012). https://doi.org/10.1134/S1063785012050240

Kozlov, G.V., Grek, G.R., Sorokin, A.M., Litvinenko, Yu.A.: Influence of initial conditions at the nozzle exit on the structure of round jet. Thermophysics and Aeromechanics 15(1), 55 (2008). https://doi.org/10.1134/S0869864308010046

Kozlov, V.V., Grek, G.R., Litvinenko, Y.A., et al.: Subsonic Round and Plane Jets in the Transversal Acoustic Field. Siberian Journal of Physics 5(2), 28–42 (2010). https://doi.org/10.54362/1818-7919-2010-5-2-28-42

Krivokorytov, M.S., Golub, V.V., Moralev, I.A.: The evolution of instabilities in gas microjets under acoustic action. Technical Physics Letters 39(9), 814–817 (2013). https://doi.org/10.1134/S1063785013090186

Kozlov, V.V., Grek, G.R., Dovgal, A.V., Litvinenko, Y.A.: Stability of Subsonic Jet Flows. Journal of Flow Control, Measurement & Visualization 01(03), 94–101 (2013). https://doi.org/10.4236/jfcmv.2013.13012

Firsov, A., Savelkin, K.V., Yarantsev, D.A., Leonov, S.B.: Plasma-enhanced mixing and flameholding in supersonic flow. Philos. Trans. R. Soc. A 373(2048), 20140337 (2015). https://doi.org/10.1098/rsta.2014.0337

Dolgov, E.V., Kolosov, N.S., Firsov, A.A.: The study of the discharge influence on mixing of gaseous fuel jet with the supersonic air flow. Computer Research and Modeling 11(5), 849–860 (2019). https://doi.org/10.20537/2076-7633-2019-11-5-849-860

Volkov, L.S., Firsov, A.A.: Modeling the influence of repetitively pulsed heating on the formation of perturbations at the boundary of a transverse jet in a supersonic crossflow. Computer Research and Modeling 15(4), 845–860 (2023). https://doi.org/10.20537/2076-7633-2023-15-4-845-860

Shevchenko, A.K., Yakovenko, S.N.: Simulation of Instability Development in a Plane Submerged Jet at Low Reynolds Numbers. Siberian Journal of Physics 13(4), 35–45 (2018). https://doi.org/10.25205/2541-9447-2018-13-4-35-45

Boedicker, C., Planeaux, J., Chen, T., Schmoll, W.: Interactions between jet and annulus flows in the presence of a two-dimensional bluff body. 1st National Fluid Dynamics Conference (1988). https://doi.org/10.2514/6.1988-3689

Roquemore, W.M., Britton, R.L., Tankin, R.S., et al.: Interaction of 2-D Wake and Jet Plume. The Physics of Fluids 31(9), 2385–2385 (1988). https://doi.org/10.1063/1.4738820




How to Cite

Firsov, A. A. (2024). 2D Simulation of Micro-Jet Excitation by Heat Source. Supercomputing Frontiers and Innovations, 10(4), 12–20. https://doi.org/10.14529/jsfi230402