Boundary-layer-flow instability in a rapidly rotating and strong precessing sphere etc15 Tracking Number 330Presentation: Session: Instability and Transition 3 Room: Room A Session start: 10:30 Wed 26 Aug 2015 Shigeo Kida skida@doshisha.ac.jp Affifliation: Doshisha University Topics: - Instability and transition Abstract: The linear stability analysis of the steady flow is performed in a rapidly rotating sphere with strong precession. It is shown that the localized mode destabilizing the boundary-layer flow determines the stability boundary, giving the asymptote, $Po\propto Re^{2/3}$, which is consistent with the results obtained by direct numerical simulation. |