Experimental study of wind load on tree using scaled fractal tree model

Woei Leong Chan, Yongdong Cui, Siddharth Sunil Jadhav, Boo Cheong Khoo, Heow Pueh Lee, Chi Wan Calvin Lim, Like Gobeawan, Daniel Joseph Wise, Zhengwei Ge, Hee Joo Poh, Venugopalan Raghavan, Ervine Shengwei Lin, Daniel Christopher Burcham

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Green urbanism has stimulated more research on the aerodynamics of tree in recent years. The insight gained in studying wind load on trees would mitigate risk of tree falling and enable sustainable landscape planning. However, deciphering the effect of wind on trees is a daunting task because trees come in various species, shapes and sizes. In this study, we aim at conducting wind tunnel tests on various species of trees, including measuring the respective drag coefficient and turbulent flow field using a force balance and particle image velocimetry system. The wind tunnel experiment is conducted using scaled down fractal tree model at 10 and 15 m/s. The 3D-printed tree model is grown based on the data collected on the species-specific tree parameters, such as the height, trunk diameters, crown box dimensions, etc. In this paper, the wind tunnel result of Yellow Flame (Peltophorum pterocarpum) is presented. Results show that the drag coefficient for this inflexible tree model is not sensitive to wind speed. The Reynolds shear stress and turbulence kinetic energy are observed to be the largest at the top and bottom of the crown where the velocity gradients are the highest.

Original languageEnglish
Article number2040087
JournalInternational Journal of Modern Physics B
Issue number14-16
Publication statusPublished - 2020 Jun 30

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics


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