engleski

Shape optimization method for nozzle design

The optimization of the nozzle shape was carried out using the finite element incompressible viscous flow solver, with discretization of total derivative, with the originaly developed software. Optimization procedure used cojugated gradient method, with finite difference approximation of gradient of objective function. The mesh generator, specially addapted for chosen shape parametrization in the form of splines using Bezier cubic segments, has been used in optimal shape design of the nozzle. The examples of optimization with constraints, the nozzle shape optimization, and the unconstrained optimization of the confuser are presented. All test cases show good convergence properties that qualifies the proposed methodology as appropriate for shape optimization in viscous flow problems.

shape optimization; nozzle flow; CFD

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