最近30从www.hoelymoley.com 2023 - 04 - 13 - t08:13:17z //www.hoelymoley.com/feeds/question/23744 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/23744 5 theWrongAlice //www.hoelymoley.com/users/22353 2022 - 04 - 20 - t19:07:25z 2022 - 04 - 25 - t12:14:09z

< p >我发现了一个粒子的干沉积速度公式和一个电路类比。我想要一些澄清这图:< / p > < p > < a href = " https://i.stack.imgur.com/aBVbo.png " rel = " noreferrer " > < img src = " https://i.stack.imgur.com/aBVbo.png " alt = "电路" / > < / > < / p > < p >我最感兴趣的右上方的电路。这里,< span class = " math-container " > R_a < / span >美元是空气动力阻力,< span class = " math-container " >美元R_ {cp} $ < / span >是一个(有效)树冠阻力和<跨类= " math-container " > V_g < / span >美元是粒子的重力沉降速度。我不明白为什么有一个< span class = " math-container " >美元V_g ^ {1} $ < / span >与其他电阻和我不确定的地方< span class = " math-container " >美元R_a R_ {cp} V_g < / span >来自美元。一些提示将不胜感激。我得到这个数字从< a href = " https://www.researchgate.net/profile/Tilden-Meyers/publication/226641382_A_Preliminary_multiple_resistance_routine_for_deriving_dry_deposition_velocities_from_measured_quantities/links/0c960515ac3abb1ab1000000/A-Preliminary-multiple-resistance-routine-for-deriving-dry-deposition-velocities-from-measured-quantities.pdf " rel = " noreferrer " >希克斯et al . 1987 < / >。最终沉积速度将< / p > < p > <跨类= " math-container " > $ $ V_d = (R_a + R_ {cp} + R_a R_ {cp} V_g) ^ {1} + V_g $ $ < / span > < / p > < p >,可以很容易地来自上面的电路。< / p >

//www.hoelymoley.com/questions/23744/-/23771 # 23771 4 Deditos //www.hoelymoley.com/users/106 2022 - 04 - 25 - t12:14:09z 2022 - 04 - 25 - t12:14:09z

< p >我不确定如果你已经引证报告深入< / p > < p >希克斯et al (1985) < em >的使用监控空气浓度来推断干沉积< / em >,美国国家海洋和大气管理局技术备忘录ERLO ARLZ141 (< a href = " https://repository.library.noaa.gov/view/noaa/19701 " rel = " nofollow noreferrer " > https://repository.library.noaa.gov/view/noaa/19701 < / >) < / p > < p >的更多信息在附录C这些图的起源。< / p > < p >他们的论点湍流和引力(沉降)沉积通量是分离和添加剂,这样总沉积速度,< / p > < p > <跨类= " math-container " > $ $ v_p = v_d + v_g = -F_p / C $ $ < / span > < / p > < p >, < span class = " math-container " > F_p美元< / span >和<跨类= " math-container " > < / span >加元美元粒子通量和浓度,分别。然后他们注意,< / p > < blockquote > < p >这个简单的过程引入了一个概念上的问题,然而,由于显然都<跨类= " math-container " > v_d美元< / span >和<跨类= " math-container " > C < / span >美元是高度的函数和类< span = " math-container " > v_g < / span >不是美元。< / p > < /引用> < p >此时他们承担两个方程类< span = " math-container " > F_p < / span >美元(方程式。C5、C6),一个用于湍流层和林冠层:< / p > < p > <跨类= " math-container " > $ $ F_p左= - \ [C (z) - C (z_0) \] \, r_a ^ {1} - C (z) \ v_g \ \ F_p = - C (z_0) \ r_ {cp} ^ {1} - C (z_0) \ v_g $ $ < / span > < / p > < p >这些可以组合来消除< span class = " math-container " > C (z_0) < / span >美元,结果结合< span class = " math-container " > v_p < / span >美元以上方程和重新安排收益率Eq C7, < / p > < p > <跨类= " math-container " > $ $ v_p = (r_a + r_ {cp} + r_a r_ {cp} v_g) ^ {1} + v_g $ $ < / span > < / p > < p >的线路图显示在右上方是一个方程表达式,显示了传统线路图可以修改为紊流传输的重力沉降。然而,他们指出,< / p > < blockquote > < p >在实践中,三重积项方程(C.7)不太可能具有重要意义,除非< span class = " math-container " > v_g < / span >是美元相对较大。详细考虑的影响并不是必要的,因为伟大的不确定性量<跨类= " math-container " >美元r_ {cp} < / span >美元粒子的情况。< / p > < /引用>

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