ジェットエンジン排気噴流の挙動

概要

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To obtain the basic data for assuming the source position of jet engine exhaust plume, a full scale field test was done at Chitose Airport, to make use it in the air pollution assessment of the proposed New Kansai Airport. An engine of airbus (Rolles Royce RB211-22B) was examined for a few engine operation modes. An observation net of about 100 meters width and 25 meters hight was constructed perpendicular to the jet axis, instrumented at several levels with sensors for velocity, temperature and concentration of pollutants. A model test was carried out in the laboratory to examine the effect of engine height and the both results were compared with each other. The bending of jet axis by the crosswind is determined and a penetration length is estimated. The decay of maximum velocity and temperature as well as the jet dispersion scales is also determined.
1984-04-24