Aerodynamic noises from building exterior subsidiaries such as balusters or louver fins exposed to strong winds give serious psychological impact to inhabitants. To reduce required resources for three-dimensional aeroacoustic source computation of such two-dimensional bodies, an estimationmethod of full-span acoustic intensity from a partial-span computation has been formerlypresented by one of the authors. The method has stood on an unproved assumption that the real part of complex coherence of surface pressure as function of spanwise distance obeys Gaussian function, which is examined experimentally and computationally in this investigation.The experiments are conducted in a low-noise wind tunnel using a square-cylindrical test body in which surface pressure sensors are embedded. In computations, a Large Eddy Simulation with the standard Smagorinsky model is employed. Reynolds numbers range from 4620 to 9240 and the angles of attack from 0 to 30 degrees. The results tell that in all cases the real parts of complex coherences fit well with Gaussian function especially at K´arm´an frequencies. Although coherent structures also agreed qualitatively between experiments and computations, large discrepancies are found in coherent lengths. The investigation of the cause remains as future work.会議名称：The 32nd International Congress and Exposition on Noise Control Engineering主催学会：KSNVE/AS
