Author(s)

A. Cenedese & G. Querzoli

Abstract

Invited Paper Optical methods for the flow velocity measurement in a laboratory model of the convective boundary layer A. Cenedese, G. Querzoli Mechanics and Aeronautics Department, 'La Sapienza', University of Rome, Italy 1. Introduction The Atmospheric Boundary Layer has been studied mainly by means of direct measurement but. since 70s some laboratory models have been used in order to obtain a large number of measurements with well-known initial and boundary conditions. The atmospheric experiments are usually carried out by instrumented aircraft flying series of straight paths at constant heights (Coulman 1978, Kaimal et al. 1976. Lenschow 1974, Hildebrand and Ackerman 1984. Young 1988b,c,d). With such an experimental set-up, the velocity measurements are affected by errors due to the perturbation of the field induced by the aircraft itself and to the velocity fluctuations of the aircraft that cannot be precisely subtracted from the rough data. In the lab

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