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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Extreme Loads & Disasters

Numerical simulation of snowdrift on a membrane roof

< Table of Contents for Extreme Loads & Disasters
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Extreme Loads & Disasters
  • Pages: 9
  • Title: Numerical simulation of snowdrift on a membrane roof
  • Author(s): Xiaoying Sun, Rijing He, Yue Wu
  • Keywords: membrane roof, snowdrift, CFD, sweeping snow
Abstract
Long-span structures are quite sensitive to uneven distributed snow loads, therefore it is vital to estimate the wind-induced redistribution snow loads accurately. This paper presents the results of numerical simulation of snowdrift on a long-span membrane roof at first. Based on Euler-Euler method in multi-phase flow theory, the numerical simulation adopt Mixture model by employing commercial CFD software FLUENT. Assuming the snow is evenly distributed at the initial time in simulation, combined with the snow deposition and erosion model, the result is given as the contour map of snow distribution coefficient under different wind velocities and directions, and we give the most unfavorable form of snow distribution. Next, under the condition of laying air-jet pipelines on the roof, the snow sweeping process is simulated by employing transient solver in FLUENT, the result is given as the time dependent residual snow mass fraction and snow mass flux which provide some useful suggestions on practical application.

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