Experimental investigation of large-scale flow structures in an aircraft cabin mock-up

Yongzhi Zhang; Jiayu Li; Mingxin Liu; Junjie Liu; Congcong Wang

doi:10.1016/j.buildenv.2020.107224

Experimental investigation of large-scale flow structures in an aircraft cabin mock-up

Build Environ. 2020 Oct 15:184:107224. doi: 10.1016/j.buildenv.2020.107224. Epub 2020 Aug 29.

Authors

Yongzhi Zhang¹, Jiayu Li², Mingxin Liu³, Junjie Liu³, Congcong Wang⁴

Affiliations

¹ College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
² Berkeley Education Alliance for Research in Singapore, 138602, Singapore.
³ Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China.
⁴ School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.

Abstract

The purpose of this study was to investigate the influence of large-scale circulation on the flow field in a cabin mockup. The velocity was measured by ultrasonic anemometers (UA). Then, this study analyzed the turbulence kinetic energy spectra of the velocity fluctuation signal. The turbulence kinetic energy spectra of the measurement points reflect the flow characteristic of the large-scale circulation in the cabin mockup. The results contribute to the understanding of the role of the thermal plume on the large-scale circulation in the cabin. The large-scale circulation's impact on air quality was also investigated, and the contaminant distribution was measured using tracer gas in the cabin. The two large-scale circulation interactions made the air flow mixing approximately uniform.

Keywords: Aircraft cabin; Airflow; Large-scale circulation; Thermal plume; Turbulence kinetic energy spectra.