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Measurements and predictions of flow and turbulence over an isolated hill of moderate slope
Author(s) -
Mason P. J.,
King J. C.
Publication year - 1985
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49711146818
Subject(s) - turbulence , terrain , flow (mathematics) , summit , mean flow , geology , meteorology , mechanics , mathematics , physics , environmental science , geography , physical geography , cartography
Field measurements of the mean flow and turbulence statistics in neutral static stability flow over an isolated, roughly circular hill, Blashaval, are presented. Blashaval rises approximately 100 m above the surrounding terrain and has a base diameter of about 800 m. the flow speed at 8 m over the summit is found to be increased by a factor of 1.7 over the upstream value and the flow direction reverses in the lee of the hill. the turbulence structure observed above the summit shows marked variations with height. the observed mean flow is compared with results from a model which makes a careful application of linear theory to real terrain. the turbulence measurements are compared with results from available theories.