---

作 者 ：关德新 朱廷曜 韩士杰

期 刊 ：林业科学 2001年 37卷 6期 页码：11-14

关键词：单株树；阻力；阻力系数；伯努力方程；

Keywords:Isolated tree, Drag, Drag coefficient, Bernoulli&prime, s equation,

摘 要 ：

利用伯努力方程和气流穿过单株树时风速衰减规律,推导出单株树的阻力和阻力系数模式分别为φ=u2 4κ2 kC′ρD′( 1-α2 )H ln Hz02 - 2Hln Hz0+ 2H - 2z0CT ≈12 A( 1-α2 )模式与风洞模拟实验结果很好地吻合。

Abstract:

Based on Bernoulli′s equation and hypothesis of wind speed attenuation in isolated tree crown, models of drag and drag coefficient of isolated tree are deduced respectively. This model prediction agrees well with data of wind tunnel experiment.

---