The relationship between wind pressure on the surface of rectangular prisms and atmospheric boundary layer parameters

• Autorzy: Lipecki, T.

Warianty tytułu

PL

Zależność między ciśnieniem wiatru na powierzchni obiektów prostopadłościennych a parametrami warstwy przyściennej

• Języki publikacji: EN

Abstrakty

EN

This paper considers the dependence of pressure fields on surfaces of rectangular prisms obtained from wind tunnel experiments on boundary layer characteristics. Six different variants of boundary layer flows were simulated in the wind tunnel. The qualitative coefficients of correlation R_s between the wind pressure coefficient C_p or its standard deviation σ_p and parameters describing boundary layer flows (wind speed profile, turbulence intensity profile, power spectral density) were estimated in order to determine how wind parameters influence surface pressure. Five rectangular prisms were placed in the wind tunnel. The following ratios of prism dimensions were adopted: D/B/H = 1:2:20 (R5); 1:2:10 (R3); 1:2:5 (R1); 1:4:20 (R4); 1:4:10 (R2).

PL

W artykule przedstawiono analizę zależności ciśnienia zmierzonego na powierzchniach obiektów prostopadłościennych w trakcie badań wykonanych w tunelu aerodynamicznym od parametrów opisujących strukturę wiatru w warstwie przyściennej. W pomiarach przyjęto sześć różnych wariantów struktury wiatru. Wyznaczono jakościowy współczynnik korelacji R_s między współczynnikiem średniego ciśnienia C_p lub jego odchylenia standardowego σ_p na powierzchni modeli, a parametrami określającymi strukturę wiatru w warstwie przyściennej (pionowym profilem średniej prędkości wiatru, pionowym profilem intensywności turbulencji, funkcją gęstości widmowej mocy). Celem analiz było określenie wpływu poszczególnych parametrów wiatru na ciśnienie powierzchniowe. Pomiary wykonano na pięciu modelach prostopadłościanów o następujących stosunkach wymiarów: D/B/H = 1:2:20 (R5), 1:2:10 (R3), 1:2:5 (R1), 1:4:20 (R4), 1:4:10 (R2).

Słowa kluczowe

PL

oddziaływanie wiatru; tunel aerodynamiczny; współczynnik ciśnienia; współczynniki korelacji Spearmana

EN

wind action; wind tunnel; pressure coefficient; Spearman correlation coefficients

• Czasopismo: Czasopismo Techniczne. Budownictwo
• Rocznik: 2015
• Tom: Y. 112, iss. 2-B
• Strony: 91--105
• Opis fizyczny: Bibliogr. 33 poz., tab., wykr., il.

Twórcy

autor

Lipecki, T.

• Department of Structural Mechanics, Lublin University of Technology, Poland

Bibliografia

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Identyfikatory

DOI

10.4467/2353737XCT.15.127.4164