Khí động lực học trong vườn hạnh nhân: Biến thể đứng trong thống kê rối loạn

Springer Science and Business Media LLC - Tập 40 - Trang 127-146 - 1987
Dennis D. Baldocchi1, Boyd A. Hutchison1
1Atmospheric Turbulence and Diffusion Division, NOAA/ARL, Oak Ridge, USA

Tóm tắt

Các thành phần tốc độ gió ba chiều được đo lường trên và trong một vườn hạnh nhân đồng nhất. Các thống kê rối loạn liên quan đến dòng chảy rối bên trong tán lá được xem xét một cách chi tiết. Rối loạn trong một vườn hạnh nhân được đặc trưng bởi cường độ rối loạn tương đối cao và các giá trị độ lệch và độ nhọn lớn. Những kết quả này cho thấy rằng phân bố tần suất của các thành phần tốc độ gió là phi Gauss. Việc lấy mẫu có điều kiện các số đo rối loạn cho thấy rằng những dòng chảy lớn, hiếm gặp cung cấp cơ chế chủ yếu cho ứng suất mômen tiếp tuyến trong tán lá. Sâu bên trong tán lá, một cực gió thứ cấp và các ứng suất mômen tiếp tuyến nhỏ nhưng dương được quan sát thấy.

Từ khóa

#rối loạn khí động #vườn hạnh nhân #thống kê rối #tốc độ gió #tán lá

Tài liệu tham khảo

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