Publications

Journal papers

  1. A. Watanabe, N. Papanikolatos, T. Michelis, M. Kotsonis, S. Yarusevych, S. Otomo, H. Nishida, “Controlling laminar separation bubble on high angle-of-attack aerofoil” (in preparation)
  2. S. Otomo, L.T.L. Pereira, D. Ragni, J. Tan, Y. Liu, “Tip-vortex mitigtion via permeable tip” (in preparation)
  3. T. Mitabe, H.J. Park, Y. Tasaka, Y. Murai, S. Otomo, “Three-body interaction of Savonius turbines” (in preparation)
  4. A. Sumi, S. Otomo, H. Nishida, “Adaptive camber aerofoils for load alleviation” (under review)
  5. Y. Ishii, A. Komuro, S. Otomo, H. Nishida, “Electrohydrodynamic effect of linear plasma synthetic jet actuators” (under review)
  6. A. Nishizawa, A. Hatamoto, S. Otomo, H. Nishida, “Modelling heat transder plasma actuators in forced convection” (under review) | Preprint
  7. S. Otomo, R. Yoshioka, H. Nishida, Y. Murai “The effect of turbulence on Savonius turbines” (under review) | Preprint
  8. S. Otomo, K. Mulleners, K. Ramesh, I.M. Viola, “Modelling vortex dynamics of high-amplitude pitching aerofoil” (under review)
  9. N. Takada, A. Watanabe, S. Shimomura, S. Otomo, H. Nishida, “Explainability of deep reinforcement learning-based closed-loop control for flow separation around an airfoil” (under review)
    10.
  10. S. Otomo*, K. Ramesh, “Closed-form unsteady thin-airfoil theory for high-amplitude problems”, 2026, Aerospace Science and Technology, 178, Part B, 112983, DOI:10.1016/j.ast.2026.112983 | Preprint
  11. R. Yoshioka, H. Nishida, A. Oyama, S. Otomo*, “Trailing-edge plasma flow control enhances unsteady lift on pitching aerofoils”, 2026, Experimental Thermal and Fluid Science, 175, 111745, DOI:10.1016/j.expthermflusci.2026.111745
  12. S. Otomo, A. Young, E. McCarthy, I.M. Viola, “Scaling unsteady load alleviation in airfoils with flexible trailing-edges”, 2025, Physical Review Fluids, 10, 114102, DOI:10.1103/6t5l-spq1
  13. J. Tan, S. Otomo, I.M. Viola, Y. Liu, “Passive control of wing tip vortices through a grooved-tip design”, 2025, Experiments in Fluids, 66, 2025, DOI:10.1007/s00348-025-04128-4 | arXiv
  14. S. Otomo, K. Ochi, H. J. Park, Y. Tasaka, Y. Murai, “Applying colour-coded particle image velocimetry to the wake of a delta wing across a wide range of angles of attack”, 2025, Journal of Fluid Science and Technology, 20, 2, DOI:10.1299/jfst.2025jfst0013
  15. Y. Kaneko, S. Otomo, T. Torin, Y. Kakuya, T. Saito, T. Hanai, T. Matsuno, H. Nishida, “The combination of rear flaps and plasma actuators for the drag reduction of a square-back bluff body”, 2025, Journal of Fluids Engineering, 147, 121201, DOI:10.1115/1.4068762 | Accepted Manuscript
  16. A. Watanabe, N. Takada, S. Shimomura, S. Sekimoto, S. Otomo, A. Oyama, H. Nishida, “The effect of pressure sensor arrangement on deep reinforcement learning-based feedback control of separated flow around aerofoils”, 2025, Aerospace Science and Technology, 146, 110347, DOI:10.1016/j.ast.2025.110347
  17. N. Omori, A. Nishizawa, A. Hatamoto, S. Otomo, H. Nishida, “Gas heating and flow modofication effects by plasma actuator in forced-convection heat transfer”, 2025, International Journal of Heat and Mass Transfer, 247, 127136, DOI:10.1016/j.ijheatmasstransfer.2025.127136
  18. S. Otomo, P. Gehlert, H. Babinsky, J. Li, “Vortex force map method to estimate unsteady forces from snapshot flowfield measurements”, 2025, Experiments in Fluids, 66, 64, DOI:10.1007/s00348-025-03962-w
  19. S. Otomo, S. Gambuzza, Y. Liu, A.M. Young, R. Broglia, E.D. McCarthy, I.M. Viola, "A General Framework for the design of efficient passive pitch systems", 2024, Physics of Fluids, 36, 2: 067122, DOI:10.1063/5.0212626
  20. Y. Murai, S. Otomo, S. Osuka, T. Yamaguchi, “Measurement of 3-D flow structure around densely arranged out-door units of air conditioner”, 2024, Transaction of the JSME (in Japanese), 90, 933, DOI: 10.1299/transjsme.24-00035
  21. J.M. Maguire, D. Mamalis, S. Otomo, E.D. McCarthy, “Passively morphing trailing edge design for composite tidal turbine blades”, 2024, Composite Structures, 337, 118090, DOI: 10.1016/j.compstruct.2024.118090
  22. S. Otomo*, P. Denissenko, Y. Tasaka, Y. Murai, “On the rotation of a Savonius turbine in high turbulence with Kolmogorov cascade”, 2024, Physics of Fluids, 36, 2: 027104, DOI:10.1063/5.0180939 | Accepted Manuscript
  23. H. J. Bird, K. K. Ramesh, S. Otomo, I. M. Viola, “The usefulness of inviscid linear unsteady lifting-line theory for viscous large-amplitude problems”, 2022, AIAA Journal, 60, 2, DOI:10.2514/1.J060808 | arXiv
  24. S. Otomo, S. Henne, K. Mulleners, K. Ramesh, I. M. Viola, “Unsteady lift on a high-amplitude pitching aerofoil”, 2021, Experiments in Fluids, 62, 6, DOI: 10.1007/s00348-020-03095-2
  25. L. Bandiera, G. Pavar, G. Pisetta, S. Otomo, E. Mangano, J. R. Seckl, P. Digard, E. Molinari, F. Menolascina, I. M. Viola, “Face Coverings and Respiratory Tract Droplet Dispersion”, Royal Society Open Science, 7: 201663, DOI: 10.1098/rsos.201663

Conference proceedings (selected)

  1. S. Gambuzza, S. Otomo, Y. Liu, A. M. Young, R. Broglia, E. D. McCarthy and I. M. Viola “Design and Demonstration of a Passive Pitch System for Tidal Turbines”, 2023, The 15th European Wave and Tidal Energy Conference (EWTEC), Bilbao, Spain, 03/09/2023 - 07/09/2023, DOI: 10.36688/ewtec-2023-504
  2. Y. Murai, T. Umemura, R. Sayama, Y. Horimoto, H.Y. Park, Y. Tasaka, S. Otomo, “Savonius wind turbine performance in high turbulence and its improvement by jet supply”, International Conference on Power Engineering 2021 (ICOPE-2021), Kobe, Japan, 17/10/2021 – 21/10/2021, DOI: 10.1299/jsmeicope.2021.15.2021-0183
  3. H. J. Bird,K. K. Ramesh, S. Otomo, I. M. Viola, “Leading Edge Vortex Formation on Finite Wings Using Vortex Particles”, 2021 AIAA SciTech Forum, online conference, 11/01/2021 – 15/01/2021, DOI: 10.2514/6.2021-1196
  4. H. J. Bird, S. Otomo, K. K. Ramesh, I. M. Viola, “A Geometrically Non-linear Time-domain Unsteady Lifting-line Theory”, AIAA Scitech 2019 Forum, San Diego, California, 07/01/2019 – 11/01/2019, DOI: 10.2514/6.2019-1377