Large-eddy Simulations on Flow Structures and Interaction Mechanism of Synthetic Jets in a Crossflow

Document Type : Regular Article

Authors

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

Abstract

The results of large-eddy simulations are presented to illustrate the flow structures generated by the interaction of synthetic jets with a crossflow. The coupled calculations involving the internal flow of the actuator cavity and the external flow are performed using the ANSYS-Fluent software. The influence of the orifice shape (round orifice and rectangular orifices with aspect ratio of 6, 12, or 18) on the evolution of coherent structures is analyzed, and the effects of the jet-to-crossflow velocity ratio (0.5, 1.0, or 1.5) on the turbulent flow behavior are examined. The results show that the first vortex ring shed from the rectangular orifice lip behaves as a plate-like vortex. The horseshoe vortex and first vortex ring are followed by a trailing jet in the case of a round orifice, but this configuration is rarely identified when the orifice is rectangular. For the rectangular orifice with an aspect ratio of 18, the plate-like vortex splits into vortex filaments that become interwoven with the center of the synthetic jet. In general, at the same characteristic velocity, the round-orifice synthetic jet has a stronger capacity for normal penetration into the crossflow, whereas the rectangular-orifice synthetic jet with a large aspect ratio develops closer to the wall. For the rectangular orifice with a large aspect ratio, the development of the synthetic jet is restricted to a small region near the wall at a small jet-to-crossflow velocity ratio. 

Keywords

Main Subjects

References

Arshad, A., Jabbal, M., & Yan, Y. (2020). Synthetic jet actuators for heat transfer enhancement – A critical review. International Journal of Heat and Mass Transfer, 146, 118815. https://doi.org/10.1016/j.ijheatmasstransfer.2019.118815
Berk, T., Hutchins, N., Marusic, I., & Ganapathisubramani, B. (2018). Trajectory of a synthetic jet issuing into high-Reynolds-number turbulent boundary layers. Journal of Fluid Mechanics, 856, 531–551. https://doi.org/10.1017/jfm.2018.734
Elimelech, Y., Vasile, J., & Amitay, M. (2011). Secondary flow structures due to interaction between a finite-span synthetic jet and a 3-D cross flow. Physics of Fluids, 23(9), 094104. https://doi.org/10.1063/1.3632089
Eri, Q., Hong, L., Li, T., Wang, Q., & Wang, M. (2016). Numerical simulations of mixing enhancement in subsonic jet using high-momentum synthetic jets. Journal of Propulsion and Power, 32(5), 1095–1103. https://doi.org/10.2514/1.B35801
Eroglu, A., & Breidenthal, R. E. (2001). Structure, penetration, and mixing of pulsed jets in crossflow. AIAA Journal, 39(3), 417–423. https://doi.org/10.2514/2.1351
Feng, Y. Y., Song, Y. P., & Breidenthal, R. E. (2018). Model of the trajectory of an inclined jet in incompressible crossflow. AIAA Journal, 56(2), 458–464. https://doi.org/10.2514/1.J056181
Garcillan, L., Zhong, S., Pokusevski, Z., & Wood, N. (2004, June 28). A PIV study of synthetic jets with different orifice shape and orientation. 2nd AIAA Flow Control Conference. 2nd AIAA Flow Control Conference, Portland, Oregon. https://doi.org/10.2514/6.2004-2213
Glezer, A., & Amitay, M. (2002). Synthetic jets. Annual Review of Fluid Mechanics, 34(1), 503–529. https://doi.org/10.1146/annurev.fluid.34.090501.094913
Gordon, M., & Soria, J. (2002). PIV measurements of a zero-net-mass-flux jet in cross flow. Experiments in Fluids, 33(6), 863–872. https://doi.org/10.1007/s00348-002-0518-4
Grenson, P., & Deniau, H. (2017). Large-Eddy simulation of an impinging heated jet for a small nozzle-to-plate distance and high Reynolds number. International Journal of Heat and Fluid Flow, 68, 348–363. https://doi.org/10.1016/j.ijheatfluidflow.2017.09.014
Ho, H. H., Essel, E. E., & Sullivan, P. E. (2022). The interactions of a circular synthetic jet with a turbulent crossflow. Physics of Fluids, 34(7), 075108. https://doi.org/10.1063/5.0099533
Hunt, J. C. R., Wray, A. A., & Moin, P. (1988). Eddies, streams, and convergence zones in turbulence flows. Center for Turbulence Research, Report CTR-S88 (Conference Paper CTR-S88; Center for Turbulence Research(.
Jabbal, M., & Zhong, S. (2008). The near wall effect of synthetic jets in a boundary layer. International Journal of Heat and Fluid Flow, 29(1), 119–130. https://doi.org/10.1016/j.ijheatfluidflow.2007.07.011
Jafarimoghaddam, A., Turkyilmazoglu, M., Roşca, A. V., & Pop, I. (2021). Complete theory of the elastic wall jet: A new flow geometry with revisited two-phase nanofluids. European Journal of Mechanics - B/Fluids, 86, 25–36. https://doi.org/10.1016/j.euromechflu.2020.11.006
Jankee, G. K., & Ganapathisubramani, B. (2021). Interaction and vectoring of parallel rectangular twin jets in a turbulent boundary layer. Physical Review Fluids, 6(4), 044701. https://doi.org/10.1103/PhysRevFluids.6.044701
Karagozian, A. R. (2014). The jet in crossflow. Physics of Fluids, 26(10), 101303. https://doi.org/10.1063/1.4895900
Li, B. B., Yao, Y., Gu, Y. S., & 1. (2016). Active control of 2D Backward facing step separated flow based on synthetic jet. Acta Aeronautica et Astronautica Sinca, 37(6), 1753–1762. https://doi.org/10.7527/S1000-6893.2016.0014
Li, S., Luo, Z., Deng, X., Liu, Z., Gao, T., & Zhao, Z. (2022). Lift enhancement based on virtual aerodynamic shape using a dual synthetic jet actuator. Chinese Journal of Aeronautics, 35(12), 117–129. https://doi.org/10.1016/j.cja.2022.06.005
Mahesh, K. (2013). The interaction of jets with crossflow. Annual Review of Fluid Mechanics, 45(1), 379–407. https://doi.org/10.1146/annurev-fluid-120710-101115
Ostermann, F., Woszidlo, R., Nayeri, C. N., & Paschereit, C. O. (2020). Interaction between a crossflow and a spatially oscillating jet at various angles. AIAA Journal, 58(6), 2450–2461. https://doi.org/10.2514/1.J058798
Purtell, L. P., & Klebanoff, P. S. (1981). Turbulent boundary layer at low Reynolds number. Physics of Fluids, 24(5), 802–811. https://doi.org/10.1063/1.863452
Quan, W., Sun, W., Zhang, J., & Tan, X. (2023). Large-eddy simulations on interaction flow structures of pulsed jets in a crossflow. Thermal Science and Engineering Progress, 46, 102221. https://doi.org/10.1016/j.tsep.2023.102221
Rathay, N., & Amitay, M. (2022). Interaction of synthetic jets with a massively separated three-dimensional flow field. Physical Review Fluids, 7(3), 034702. https://doi.org/10.1103/PhysRevFluids.7.034702
Sahni, O., Wood, J., Jansen, K. E., & Amitay, M. (2011). Three-dimensional interactions between a finite-span synthetic jet and a crossflow. Journal of Fluid Mechanics, 671, 254–287. https://doi.org/10.1017/S0022112010005604
Shoji, T., Besnard, A., Harris, E. W., M’Closkey, R. T., & Karagozian, A. R. (2019). Effects of axisymmetric square-wave excitation on transverse jet structure and mixing. AIAA Journal, 57(5), 1862–1876. https://doi.org/10.2514/1.J057982
Smith, B. L., & Swift, G. W. (2003). A comparison between synthetic jets and continuous jets. Experiments in Fluids, 34(4), 467–472. https://doi.org/10.1007/s00348-002-0577-6
Tan, X., Zhang, J., Yong, S., & Xie, G. (2015). An experimental investigation on comparison of synthetic and continuous jets impingement heat transfer. International Journal of Heat and Mass Transfer, 90, 227–238. https://doi.org/10.1016/j.ijheatmasstransfer.2015.06.065
Turkyilmazoglu, M. (2019). Laminar slip wall jet of Glauert type and heat transfer. International Journal of Heat and Mass Transfer, 134, 1153–1158. https://doi.org/10.1016/j.ijheatmasstransfer.2019.02.051
Van Buren, T., Beyar, M., Leong, C. M., & Amitay, M. (2016a). Three-dimensional interaction of a finite-span synthetic jet in a crossflow. Physics of Fluids, 28(3), 037105. https://doi.org/10.1063/1.4943493
Van Buren, T., Leong, C. M., Whalen, E., & Amitay, M. (2016b). Impact of orifice orientation on a finite-span synthetic jet interaction with a crossflow. Physics of Fluids, 28(3), 037106. https://doi.org/10.1063/1.4943520
Van Buren, T., Whalen, E., & Amitay, M. (2014). Vortex formation of a finite-span synthetic jet: Effect of rectangular orifice geometry. Journal of Fluid Mechanics, 745, 180–207. https://doi.org/10.1017/jfm.2014.77
Wen, X., & Tang, H. (2014). On hairpin vortices induced by circular synthetic jets in laminar and turbulent boundary layers. Computers & Fluids, 95, 1–18. https://doi.org/10.1016/j.compfluid.2014.02.002
Wu, D. K. L., & Leschziner, M. A. (2009). Large-Eddy simulations of circular synthetic jets in quiescent surroundings and in turbulent cross-flow. International Journal of Heat and Fluid Flow, 30(3), 421–434. https://doi.org/10.1016/j.ijheatfluidflow.2009.01.007
Xia, X., & Mohseni, K. (2017). flow characterization and modeling of strong round synthetic jets in crossflow. AIAA Journal, 55(2), 389–402. https://doi.org/10.2514/1.J054880
Xia, X., & Mohseni, K. (2018). Transitional region of a round synthetic jet. Physical Review Fluids, 3(1), 011901. https://doi.org/10.1103/PhysRevFluids.3.011901
Zaman, K. B. M. Q., & Milanovic, I. (2012). Control of a jet-in-cross-flow by periodically oscillating tabsa). Physics of Fluids, 24(5), 055107. https://doi.org/10.1063/1.4719150
Zhang, J., Xu, M., Pollard, A., & Mi, J. (2013). Effects of external intermittency and mean shear on the spectral inertial-range exponent in a turbulent square jet. Physical Review E, 87(5), 053009. https://doi.org/10.1103/PhysRevE.87.053009
Zhang, J., Zhang, S., Wang, C., & Tan, X. (2020). Recent advances in film cooling enhancement: A review. Chinese Journal of Aeronautics, 33(4), 1119–1136. https://doi.org/10.1016/j.cja.2019.12.023
Zhou, Y., Luo, Z. B., & Wang, L. (2022). Plasma syntheic jet actuator for flow control: Review. Acta Aeronautica et Astronautica Sinca, 43(3), 025027. https://doi.org/10.7527/S1000-6893.2020.25027

Files

History

  • Received: 07 September 2023
  • Revised: 03 November 2023
  • Accepted: 17 November 2023
  • Available online: 30 January 2024

Share

How to cite

Statistics