水体对湍流交换系数影响的计算公式

水体对湍流交换系数影响的计算公式

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Initial contribute: 2018-12-04

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岳天祥编著
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yue@lreis.ac.cn
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Method-focused categoriesData-perspectiveGeoinformation analysis
Method-focused categoriesProcess-perspectivePhysical process calculation

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水体对湍流交换系数影响的计算公式

(1)基本方程组:

    

式中,u,v,w分别为风速在x,y,z方向上的三个分量;θ,s为空气的位温和比湿;ρ为空气密度;f和f*为柯氏参数;ugvg为地转风分量;为气压扰动;K为湍流交换系数;上标M和H分别表示动量和热量;下标H和Z分别表示水平方向和铅直方向。

(2)湍流交换系数:

1)稳定度和风应力的函数:

 

式中,

为稳定度和风应力的函数;α=-3为参数;RiRicharson数;g为重力加速度;k0为卡门常数;λ=0.00027z0=0.032u*2/g为表面粗糙长度,u*为摩擦速度。

2)铅直热量湍流交换系数:

   

式中,Ric为临界Richarson数。

3)表面摩擦速度、摩擦位温和摩擦比湿计算公式:

z

其中

            

式中,u*为表面摩擦速度;θ*为摩擦位温;q*为摩擦比湿;L为莫宁-奥布赫夫长度,L=θu*2/k0*

王浩,傅抱璞:水体对湍流交换系数的影响。地理研究,1991,10(3)

 

 

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《资源环境数学模型手册》 (2018). 水体对湍流交换系数影响的计算公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/d44eb97c-fd57-49d8-95de-fd9dbcca85a1
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zhangshuo
Last modify time
2020-10-29
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Contributor(s)

Initial contribute : 2018-12-04

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Authorship

:  
岳天祥编著
:  
yue@lreis.ac.cn
:  
View
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History

Last modifier
zhangshuo
Last modify time
2020-10-29
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