A variation-gradient method for optimization of the shape of blade cascades
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A variation-gradient method for solving the problem on optimization of the shape of blade cascades has been developed and tested. This method is based on calculation of the gradient of the functional of the optimization problem with the use of the parameters of a fluid flow varied relative to the design parameters determined from the system of variation gasdynamic equations. The efficiency of the indicated method was tested, as compared to the efficiency of the analogous gradient method in which the gradient of the functional of the optimization problem is calculated using the finite-difference method, in solving concrete problems on optimization of blade cascades. It is shown that the method proposed allows one to substantially decrease the time of determining the extremum of the indicated functional.
KeywordsLift Coefficient Transonic Flow Solve Optimization Problem Blade Cascade Wing Profile
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