Turbulence Characterization of Large Scale Airflows in an Aircraft Cabin Mockup

摘要

The objective of our paper is to investigate the turbulence characterization of the airflow in an aircraft cabin mockup.Our experimental investigation was conducted in a full scale 7-rows single-aisle aircraft cabin mock-up designed as a generic replica of a section of the Boeing 737-200.The data was collected by using IFA-300 constant-temperature anemometry,which can continuously sense flow velocity and automatically adjust the dynamic response,then accurately measure the flow fluctuating velocity signals.The velocity,turbulent kinetic energy,spectrum analysis and turbulence scales were investigated.We conclude that the air entrainments decayed the velocities faster than the wall shear stress as shown.The time size step of LES should be less than 1/100 s according to our results.The turbulence eddy scales were 4 cm to 10 cm at the measured area.