Stabilization of Centrifuges with Instabilities Due to Fluid-Structure Interactions: Various Control Approaches

Axi-Symmetric Deformation Due to Various Sources in Saturated Porous Media with Incompressible Fluid

The general solution of equations of saturated porous media with incompressible fluid for two dimensional axi-symmetric problem is obtained in the transformed domain. The Laplace and Hankel transforms have been used to investigate the problem. As an application of the approach concentrated source and source over circular region have been taken to show the utility of the approach. The transforme...

Stabilization due to predator interference: comparison of different analysis approaches.

We study the influence of the particular form of the functional response in two-dimensional predator-prey models with respect to the stability of the nontrivial equilibrium. This equilibrium is stable between its appearance at a transcritical bifurcation and its destabilization at a Hopf bifurcation, giving rise to periodic behavior. Based on local bifurcation analysis, we introduce a classific...

Feedback Stabilization of a Fluid-Structure Model

We study a system coupling the incompressible Navier-Stokes equations in a 2D rectangular type domain with a damped Euler-Bernoulli beam equation, where the beam is a part of the upper boundary of the domain occupied by the fluid. Due to the deformation of the beam the fluid domain depends on time. We prove that this system is exponentially stabilizable, locally about the null solution, with an...

Approaches to enzyme stabilization.

much less stable in both cases (Wiseman et al., 1975). Reduced forms contain Fe", which is a high-spin-state form, and this may explain the lower stability, although there is a possibility of a conformational difference for the Fel* form associated with its mechanistic role in oxygen binding. This is another possible case, therefore, of a mechanistic advantage and stability being mutually exclu...

Overcoming added-mass instabilities for fluid-structure interaction