Browsing Mathematics by Author "Ponty, Y."
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Dissipative structures in a nonlinear dynamo
Gilbert, Andrew D.; Ponty, Y.; Zheligovsky, V. (Taylor & Francis, 20101202)This paper considers magnetic ﬁeld generation by a ﬂuid ﬂow in a system referred to as the Archontis dynamo: a steady nonlinear magnetohydrodynamic (MHD) state is driven by a prescribed body force. The ﬁeld and ﬂow become ... 
Kinematic dynamo action in large magnetic Reynolds number flows driven by shear and convection
Ponty, Y.; Gilbert, Andrew D.; Soward, Andrew M. (Cambridge University Press, 2001)A numerical investigation is presented of kinematic dynamo action in a dynamically driven fluid flow. The model isolates basic dynamo processes relevant to field generation in the Solar tachocline. The horizontal plane ... 
The onset of thermal convection in Ekman–Couette shear flow with oblique rotation
Ponty, Y.; Gilbert, Andrew D.; Soward, Andrew M. (Cambridge University Press, 2003)The onset of convection of a Boussinesq fluid in a horizontal plane layer is studied. The system rotates with constant angular velocity Ω, which is inclined at an angle ϑ to the vertical. The layer is sheared by keeping ...