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Editorial

Applications Based on Symmetry/Asymmetry in Fluid Mechanics

Key Laboratory of Fluid Mechanics of Ministry of Education, Beihang University (Beijing University of Aeronautics and Astronautics), Beijing 100191, China
Symmetry 2025, 17(8), 1323; https://doi.org/10.3390/sym17081323
Submission received: 12 August 2025 / Accepted: 12 August 2025 / Published: 14 August 2025
(This article belongs to the Special Issue Applications Based on Symmetry/Asymmetry in Fluid Mechanics)
This Special Issue of Symmetry is devoted to recent advances in the analysis and applications of fluid mechanics based on Symmetry/Asymmetry.
In recent years, the growing significance of symmetry analysis and its applications has been realized in fluid mechanics, due not only to theoretical achievements in this area, but also because of its numerous applications. This symmetry can be either on the space–time level or on the time level. The applications of symmetry in fluid mechanics are usually interdisciplinary, such as mechanical, aerospace, chemical, and process engineering. Therefore, their exploration is crucial for many real-life applications. This Special Issue focuses on the following topics, but is not limited to the following: the importance of symmetry in a variety of fluid flows, heat transfer and its applications, including heat exchangers, thermal storage, heat pipes, etc.
The Special Issue contains twelve papers contributed by researchers from China, USA, Romania, and India, covering a wide spectrum of important problems and topics of current research interest. These topics include the following: the mean velocity distribution in atmospheric surface layers [1]; velocity gradient tensors in two-dimensional isotropic turbulence [2]; tip leakage vortex in axial compressor rotors [3]; axisymmetric and weakly non-axisymmetric supersonic jets [4]; trailing-edge tonal noise with symmetry spanwise source regions [5]; decomposition methods for wall friction and heat flux [6]; blood damage analysis at laminar conditions [7]; asymmetry of two-dimensional thermal convection at high Rayleigh numbers [8]; horizontal divergence asymmetry in the Gulf of Mexico [9]; porous and magnetic effects on axial Couette flows of second grade fluids in cylindrical domains [10]; assessment of the measured mixing time in a water model of asymmetrical gas-stirred ladle [11]; and the influence of fewer strand casting on the symmetry breaking of flow [12].
We hope that this Special Issue comes to serve as a source of ideas for many mechanists, mathematical physicists, and engineers interested in pursuing recent developments in the Symmetry/Asymmetry phenomena of fluids.

Funding

This research received no external funding.

Conflicts of Interest

The author declares no conflicts of interest.

References

  1. Ji, Y.; Chen, X. Symmetry Analysis of Mean Velocity Distribution in Stratified Atmospheric Surface Layers. Symmetry 2023, 15, 1951. [Google Scholar] [CrossRef]
  2. Luo, C.S.; Yang, P.F.; Fang, L. Low-Order Moments of Velocity Gradient Tensors in Two-Dimensional Isotropic Turbulence. Symmetry 2024, 16, 175. [Google Scholar] [CrossRef]
  3. Hou, J.X.; Liu, Y.W.; Tang, Y.M. A Lagrangian Analysis of Tip Leakage Vortex in a Low-Speed Axial Compressor Rotor. Symmetry 2024, 16, 344. [Google Scholar] [CrossRef]
  4. Jia, T.; Li, J.W.; Wu, J.; Xiong, Y. Tomographic Background-Oriented Schlieren for Axisymmetric and Weakly Non-Axisymmetric Supersonic Jets. Symmetry 2024, 16, 596. [Google Scholar] [CrossRef]
  5. Song, Z.C.; Liu, P.Q.; Guo, H.; Sun, Y.F.; Jiang, S.J. The Influence of Low-Frequency Oscillations on Trailing-Edge Tonal Noise with Symmetry Spanwise Source Regions. Symmetry 2024, 16, 710. [Google Scholar] [CrossRef]
  6. Tang, M.Z.; Zhou, W.F.; Hu, Y.C.; Wang, G.; Yang, Y.G. Local-Energy-Conservation-Based Decomposition Method for Wall Friction and Heat Flux. Symmetry 2024, 16, 1147. [Google Scholar] [CrossRef]
  7. Krishnamoorthy, G.; Gholizadeh, N. Blood Damage Analysis within the FDA Benchmark Nozzle Geometry at Laminar Conditions: Prediction Sensitivities to Software and Non-Newtonian Viscosity Models. Symmetry 2024, 16, 1165. [Google Scholar] [CrossRef]
  8. He, J.C.; Bao, Y.; Chen, X. Asymmetry of Two-Dimensional Thermal Convection at High Rayleigh Numbers. Symmetry 2024, 16, 1583. [Google Scholar] [CrossRef]
  9. Zhou, T.S.; Xie, J.H.; Balwada, D. On the Horizontal Divergence Asymmetry in the Gulf of Mexico. Symmetry 2025, 17, 136. [Google Scholar] [CrossRef]
  10. Fetecau, C.; Vieru, D. Porous and Magnetic Effects on Axial Couette Flows of Second Grade Fluids in Cylindrical Domains. Symmetry 2025, 17, 706. [Google Scholar] [CrossRef]
  11. Zhao, Y.S.; Tao, X.; Li, L.B.; Guo, Z.J.; Qi, H.Y.; Wang, J.; Yang, K.; Lin, W.M.; Fan, J.P.; Chen, C. Assessment of the Measured Mixing Time in a Water Model of Asymmetrical Gas-Stirred Ladle with a Low Gas Flowrate Part II: Effect of the Salt Solution Tracer Volume and Concentration. Symmetry 2025, 17, 802. [Google Scholar] [CrossRef]
  12. Rong, Z.R.; Song, J.T.; Chen, C.; Guo, Z.J.; Wang, H.Z.; Geng, M.J.; Wang, T.Y.; Lin, W.M.; Wang, J.; Sun, Y.H. Influence of Fewer Strand Casting on the Symmetry Breaking of Flow, Temperature Fields, and Transition Billets in a Symmetrical Double Six-Strand Tundish. Symmetry 2025, 17, 850. [Google Scholar] [CrossRef]
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MDPI and ACS Style

Chen, X. Applications Based on Symmetry/Asymmetry in Fluid Mechanics. Symmetry 2025, 17, 1323. https://doi.org/10.3390/sym17081323

AMA Style

Chen X. Applications Based on Symmetry/Asymmetry in Fluid Mechanics. Symmetry. 2025; 17(8):1323. https://doi.org/10.3390/sym17081323

Chicago/Turabian Style

Chen, Xi. 2025. "Applications Based on Symmetry/Asymmetry in Fluid Mechanics" Symmetry 17, no. 8: 1323. https://doi.org/10.3390/sym17081323

APA Style

Chen, X. (2025). Applications Based on Symmetry/Asymmetry in Fluid Mechanics. Symmetry, 17(8), 1323. https://doi.org/10.3390/sym17081323

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