Genta Kawahara


Department of Mechanical Science and Bioengineering

Graduate School of Engineering Science, Osaka University

1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan

kawahara at

phone/fax: +81 (0)6 6850 6160


Research Interests

Fluid turbulence

Turbulent heat transfer

Coherent structure

Vortex dynamics

Flow instability and transition to turbulence

Simple invariant sets (equilibrium and periodic solutions, and their stable and unstable manifolds) in turbulent flows

Turbulence control


 Major Publications

          (1) G. Kawahara, S. Kida, M. Tanaka & S. Yanase

             Wrap tilt and stretch of vorticity lines around a strong thin straight vortex tube in a simple shear flow

             J. Fluid Mech., 353 (1997), 115-162.

          (2) M. Tanaka, S. Kida, S. Yanase & G. Kawahara

             Zero-absolute-vorticity state in a rotating turbulent shear flow

               Phys. Fluids, 12-8 (2000), 1979-1985.

(3) J. Jimenez, M. Uhlmann, A. Pinelli & G. Kawahara

             Turbulent shear flow over active and passive porous surfaces

             J. Fluid Mech., 442 (2001), 89-117.

          (4) G. Kawahara & S. Kida

               Periodic motion embedded in plane Couette turbulence: regeneration cycle and burst

               J. Fluid Mech., 449 (2001), 291-300.

            (5) G. Kawahara, J. Jimenez, M. Uhlmann & A. Pinelli

               Linear instability of a corrugated vortex sheet -- a model for streak instability

               J. Fluid Mech., 483 (2003), 315-342.

            (6) S. Yanase, M. Tanaka, S. Kida & G. Kawahara

               Generation and sustenance mechanisms of coherent vertical structures in rotating shear turbulence of zero-mean-absolute vorticity

               Fluid Dynamics Research, 35 (2004), 237-254.

            (7) J. Jimenez, G. Kawahara, M. Simens, M. Nagata & M. Shiba

               Characterization of near-wall turbulence in terms of equilibrium and gburstingh solutions

               Phys. Fluids, 17-1 (2005), 015105.

          (8) G. Kawahara

               Laminarization of minimal plane Couette flow: Going beyond the basin of attraction of turbulence

               Phys. Fluids, 17-4 (2005), 041702.

            (9) G. Kawahara

               Energy dissipation in spiral vortex layers wrapped around straight vortex tube

               Phys. Fluids, 17-5 (2005), 055111.

(10) G. Kawahara & S. Kida

               Elementary coherent structures in turbulent flows

               Parity, 20-12 (2005).

            (11) L. van Veen, S. Kida & G. Kawahara

               Periodic motion representing isotropic turbulence

               Fluid Dynamics Research, 38 (2006), 19-46.

            (12)G. Kawahara, S. Kida & L. van Veen

               Unstable periodic motion in turbulent flows

               Nonlinear Process in Geophysics, 13 (2006), 499-507.

            (13)M. Uhlmann, A. Pinelli, G. Kawahara & A. Sekimoto

               Marginally turbulent flow in a square duct

               J. Fluid Mech., 588 (2007), 153-162.

            (14)G. Kawahara

               Theoretical interpretation of coherent structures in near-wall turbulence

               Fluid Dynamics Research, 41 (2009), 064001.

            (15)A. Pinelli, M. Uhlmann, A. Sekimoto & G. Kawahara

               Reynolds number dependence of mean flow structure in square duct turbulence

               J. Fluid Mech., 644 (2010), 107-122.

            (16)M. Uhlmann, G. Kawahara & A. Pinelli

               Traveling-waves consistent with turbulence-driven secondary flow in a square duct

               Phys. Fluids, 22-8 (2010), 084102.

            (17)L. van Veen, G. Kawahara & A. Matsumura

               On matrix-free computation of 2D unstable manifolds

               SIAM Journal on Scientific Computing, 33 (2011), 25-44.

            (18)A. Sekimoto, G. Kawahara, K. Sekiyama, M. Uhlmann & A. Pinelli

               Turbulence- and buoyancy-driven secondary flow in a horizontal square duct heated from below

               Phys. Fluids, 23-7 (2011), 075103.

            (19)L. van Veen & G. Kawahara

               Homoclinic tangle on the edge of shear turbulence

               Phys. Rev. Lett., 107-11 (2011), 114501.

            (20)G. Kawahara, M. Uhlmann & L. van Veen

               The significance of simple invariant solutions in turbulent flows

               Ann. Rev. Fluid Mech., 44 (2012), 203-225.

            (21)M. Shimizu, P. Manneville, Y. Duguet & G. Kawahara

               Splitting of a turbulent puff in pipe flow

               Fluid Dynamics Research, 46 (2014), 061403.

            (22)T. Yasuda, S. Goto & G. Kawahara

               Quasi-cyclic evolution of turbulence driven by a steady force in a periodic cube

               Fluid Dynamics Research, 46 (2014), 061413.

            (23)S. Goto, M. Shimizu & G. Kawahara

               Turbulent mixing in a precessing sphere

               Phys. Fluids, 26 (2014), 115106.

            (24)K. Takeishi, G. Kawahara, M. Uhlmann & A. Pinelli

               Localized turbulence structures in transitional rectangular-duct flow

               J. Fluid Mech., 782 (2015), 368-379.


Turbulence dynamics