AERODYNAMIC CHARACTERISTIC MEASURING METHOD OF OBJECT FOR IMPROVING AERODYNAMIC CHARACTERISTIC, METHOD OF OPTIMIZING OBJECT SHAPE, OBJECT OPTIMIZED USING THE SAME, AND SHAPE VARIABLE MODEL FOR AERODYNAMIC CHARACTERISTIC EVALUATING EXPERIMENT

摘要

PROBLEM TO BE SOLVED: To provide an object shape optimizing method or the like performed for providing a desired aerodynamic characteristic to an object by using aerodynamic parameters (dynamic lift, aerodynamic sound or the like) determined experimentally. SOLUTION: In the object shape optimizing method for providing the desired aerodynamic characteristic to the object in fluid, a model that simulates the cross-sectional shape of the object and whose profile is variable is used. First, a constraint condition is set in S1, and an initial profile of the cross-sectional shape of the object under the constraint condition is set and the profile of the model is set so as to correspond to the initial profile in S2. The model is placed in the fluid and physical quantity relevant to an action received from the fluid by the model is measured in S3, and an objective function is calculated using the measured value in S4. Until the objective function becomes minimum or maximum in S5, the profile of the cross-sectional shape of the object is changed by the optimizing method (S6), and the profile of the model is changed so as to correspond to the changed profile (S7). COPYRIGHT: (C)2009,JPO&INPIT