Numerical study on infrared deicing process in climatic wind tunnels

doi:10.16265/j.cnki.issn1003-3033.2021.10.023

Abstract

Abstract: In order to solve residence ground freezing problem in climatic wind tunnels, an infrared deicing method was proposed by utilizing inner radiation simulation system. A calculation model of radiation distribution and a mathematical model of three-dimensional unsteady phase-change process were established to study melting process of ground ice layer in climatic wind tunnels. The results show that the complete melting time of ground ice under infrared deicing conditions is 2-6 hours. The ice layer melts from top to bottom, from edges to the center, and an inverted trapezoidal ice shape can be obtained in melting process, which enables addition of mechanical deicing during infrared deicing to improve deicing efficiency. Moreover, the melting time of ice layer will reduce by 1.2 hours for each increase of thickness by 10 mm. The greater thickness leads to more significant inverted trapezoid ice shape.

Key words: climatic wind tunnel, infrared deicing, ground freezing, melting process, phase interface

CLC Number:

X915.5

ZHOU Fan, WU Jinmo, LU Pengfei, LIN Hongxia. Numerical study on infrared deicing process in climatic wind tunnels[J]. China Safety Science Journal, 2021, 31(10): 167-173.

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