Y. Ponty

Publications  (update 15/04/2011)


[22] Y. Ponty and F. Plunian
       "Transition from Large-Scale to Small-Scale Dynamo"
        Phys. Rev. Lett.  106, 154502 (2011). [PDF]

[21] A. D. Gilbert, Y. Ponty, V. Zheligovsky
       ``Dissipative structures in a nonlinear dynamo''
          Geoph. Astroph. Fluid. Dyn. 1-25 (2010). [PDF]

[20] J. Baerenzung, P.D. Mininni, A. Pouquet, H. Politano, and Y. Ponty
       "Spectral Modeling of Rotating Turbulent Flows"      
         Physics of Fluids, 22, p. 025104 (2010) . [PDF]

[19] Y. Ponty, P. D. Mininni , J-P. Laval, A. Alexakis, J. Baerenzung,
        F. Daviaud, B. Dubrulle, J-F. Pinton, H. Politano, A. Pouquet
       "Linear and non linear features of the Taylor-Green Dynamo"
       C. R. Physique  9  749–756 (2008) [PDF] .

[18]  J. Baerenzung, H. Politano, Y. Ponty, A. Pouquet
       "Spectral Modeling of Magnetohydrodynamic Turbulent Flows"
         Phys. Rev. E 78 026310 (2008)  [PDF]

[17] A. Alexakis and Y. Ponty
       "The Lorentz force effect on the On-Off dynamo intermittency"
        Phys. Rev. E 77, 056308 (2008)  [PDF]

[16] J. Baerenzung, H. Politano, Y. Ponty, A. Pouquet,
        "Spectral Modeling of Turbulent Flows and the Role of Helicity"
         Phys. Rev. E  77,  (2008) 04303  [PDF]

[15] Y. Ponty, J.-P. Laval, B. Dubrulle, F. Daviaud, and J.-F. Pinton
          «Subcritical Dynamo Bifurcation in the Taylor-Green Flow»
           Phys. Rev. Lett.
99, 224501 (2007) [PDF]  


[14] Y. Ponty , P. Minnini , J.-F. Pinton, H. Politano  and A. Pouquet
        "Dynamo action at low magnetic Prandtl numbers: mean flow versus fully turbulent motions"
       New Journal of Physics 9 , 296 (2007)  [PDF]
       Cover page of PRL  November 2007  :  see this link  or  INSU

[13] A. Courvoisier,, A. G. Gilbert, & Y. Ponty,   "Dynamo action in flows with cat's eyes" 
        Geophysical and Astrophysical Fluid Dynamics, Vol. 99, No. 5, pp 413-­429 October (2005) [PDF]

[12]  P. D. Mininni, Y. Ponty, D. C. Montgomery, J-F Pinton, H. Politano, and A. Pouquet      
        "Dynamo Regimes with a Non-helical Forcing"  
         The Astrophysical Journal
626: 853 ­-863  (2005) [PDF]


[11] Y. Ponty , P. Minnini , A. Pouquet , H. Politano , D. Montgomery , J.-F. Pinton
        "Numerical study of dynamo action at low magnetic Prandtl numbers"
         Phys. Rev. Lett.  94  164512  (2005) [PDF]

[10] Y. Ponty, J. F Pinton and H. Politano,

        " Simulation of induction at low magnetic Prandtl number" 
        Phys. Rev. Lett. Vol. 92 number 14 , pp 144503 -1 (2004) [PDF]
 
[9]  Y. Ponty, A.D. Gilbert and A.M. Soward
      "The onset of thermal convection in Ekman--Couette shear flow with oblique rotation" 
       J. Fluid Mech. 487  pp 91-123 (2003). [PDF]

[8]  Y. Ponty, A.D. Gilbert and A.M. Soward , 
      "Kinematic dynamo action in flows driven by shear and convection"
       J. Fluid Mech. 435  , 261-287  (2001). [PDF]

[7]  A.D. Gilbert, and Y. Ponty,
      ``Slow Ponomarenko dynamos on stream surfaces.''
       Geophys. Astrophys. Fluid Dyn 93,  55- 95 (2000). [PDF]

[6] D. Laveder, T. Passot, Y. Ponty and P.L. Sulem,
     ``Effect of a random noise on scaling laws of finite Prandtl number rotating convection near threshold''
       Phys. Rev. E  59   R4745-R4748 (1999). [PDF]

[5] Y. Ponty, T. Passot and P.L Sulem, ``Rotating convection at moderate Prandtl number''
      Physica A249, 146-150 (1998). [PDF]

[4] Y. Ponty, T. Passot and P. L. Sulem, .
     ``Pattern dynamics in rotating convection at finite Prandtl number''
       Phys. Rev. E. 56, 4162-4178 (1997).  [PDF]

[3] Y.Ponty, T.Passot and P.L. Sulem,
      ``Chaos and structures in rotating convection at finite Prandtl number''
       Phys. Rev. Lett79, 71-74 (1997). [PDF]

[2] Y. Ponty, T. Passot and P.L Sulem,
     ``A new instability for finite Prandtl number rotating convection with free-slip boundary conditions'',
       Phys. Fluids, 9 , 67-75 (1997).  [PDF]

[1] Y. Ponty, A. Pouquet, P.L. Sulem,  "Dynamos in weakly chaotic two-dimensional flows"
      Geophys. Astrophys. Fluid Dyn. 79 , 239-257 (1995). [PDF] Book chapter :

  Yannick Ponty,
       "Numerical modeling of liquid metal dynamo experiments."
       In: Ph. Cardin, L.F. Cugliandolo, editor(s), Les Houches, Session LXXXVIII, 2007,
        Dynamos. Amsterdam: Elsevier, p. 359-382 (2008). [PDF]


Proceeding with referee process :



[3] A.M. Soward , A. Bassom and  Y. Ponty
"Alpha-Quenched alpha^2 Omega-Dynamo waves  in stellar shells"
P. Chossat et al. ed , Dynamo and Dynamics, a Mathematical Challenge
Kluwer Academic Publishers, 297-304 (2001). [PDF]

[2] Y. Ponty, A.D. Gilbert and A.M. Soward
" Dynamo Action due to Ekman layer Instability"
P. Chossat et al. ed , Dynamo and Dynamics, a Mathematical Challenge
Kluwer Academic Publishers,  261-287 (2001). [PDF]

[1] Y. Ponty, A. Pouquet, V. Rom-Kedar, P.L. Sulem,
"Dynamo Action in a Nearly Integrable Chaotic Flow"
in "Solar and planetary Dynamos" 241-248,  (eds.) Cambridge University Press (1993). [PDF]