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- Henry Kasumba, Karl Kunisch
- 2010 15th International Conference on Methods and…
- 2010

A shape design optimization problem for viscous flows in an open channel with a bump and an obstacle are investigated. An analytical expression for the shape design sensitivity involving different cost functionals is derived using the adjoint method and the material derivative concept. A channel flow problem with a bump as a moving boundary is taken as an… (More)

- H. Kasumba, Karl Kunisch
- Comp. Opt. and Appl.
- 2012

The use of translation invariant cost functionals for the reduction of vortices in the context of shape optimization of fluid flow domain is investigated. Analytical expressions for the shape design sensitivity involving different cost functionals are derived. Channel flow problems with a bump and an obstacle as possible control boundaries are taken as test… (More)

- H. Kasumba, Karl Kunisch
- Applied Mathematics and Computation
- 2012

A bilevel shape optimization problem for the exterior Bernoulli free boundary value problem Powered by TCPDF (www.tcpdf.org) ABSTRACT. A bilevel shape optimization problem with the exterior Bernoulli free boundary problem as lower-level problem and the control of the free boundary as the upper-level problem is considered. Using the shape of the inner… (More)

- H. Kasumba, Karl Kunisch
- Comp. Opt. and Appl.
- 2013

The use of translation invariant cost functionals for the reduction of vortices in the context of shape optimization of fluid flow domains is investigated. Analytical expressions for the shape design sensitivity involving different cost functionals are derived. Instationary channel flow problems with a bump and an obstacle as possible control boundaries are… (More)

- H. Kasumba, K. Kunisch
- 2014

The use of translation invariant cost functionals for the reduction of vortices in the context of shape optimization of fluid flow domain is investigated. Analytical expressions for the shape design sensitivity involving different cost functionals are derived. Channel flow problems with a bump and an obstacle as possible control boundaries are taken as test… (More)

- H. Kasumba, Karl Kunisch
- J. Optimization Theory and Applications
- 2014

A framework for calculating the shape Hessian for the domain optimization problem with a partial differential equation as the constraint is presented. First and second order approximations of the cost with respect to geometry perturbations are arranged in an efficient manner that allows the computation of the shape derivative and Hessian of the cost without… (More)

- H. Kasumba, K. Kunisch
- 2014

The use of translation invariant cost functionals for the reduction of vortices in the context of shape optimization of fluid flow domains is investigated. Analytical expressions for the shape design sensitivity involving different cost functionals are derived. Instationary channel flow problems with a bump and an obstacle as possible control boundaries are… (More)

- H. KASUMBA
- 2014

We present a boundary optimal control approach for a Bernoulli free boundary problem. Our control objective consists in tracking a free boundary to an a priori given desired one. An appropriate cost functional is chosen for this purpose and its gradient is analytically derived. The resulting optimality conditions are discretized and the minimization problem… (More)

- H. KASUMBA
- 2014

Three different reformulations of a free surface problem as shape optimization problems are considered. These give rise to three different cost functionals which apparently have not been exploited in literature. The shape derivatives of the cost functionals are explicitly determined. The gradient information is combined with the boundary variation method in… (More)