Premium
River Flow Simulation: Research and Developments
Author(s) -
KNIGHT D. W.,
SAMUELS P. G.,
SHIONO K.
Publication year - 1990
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1990.tb01572.x
Subject(s) - turbulence , channel (broadcasting) , flow (mathematics) , flood myth , work (physics) , process (computing) , open channel flow , k epsilon turbulence model , hydrology (agriculture) , environmental science , meteorology , geotechnical engineering , civil engineering , geology , marine engineering , computer science , mechanics , engineering , mechanical engineering , geography , physics , telecommunications , archaeology , operating system
The translation of recent research work concerning shear layers into practical river simulation models is explained. The equations which govern the lateral distribution of streamwise depth‐averaged velocity are formulated and solved. The analytical solution includes the effects of bed‐generated turbulence, lateral shear turbulence and secondary flows, and therefore reproduces many of the main features of river channel flow. The solution closely simulates the process involved in river gauging by the current‐meter method. Recent data from the Science and Engineering Research Council's Flood Channel Facility are used to illustrate the variation of shear stresses within the flow, and data from three river‐gauging sites are used to illustrate the potential of the model. The steps involved in the design of a modern river simulation package are also described. It is shown how choices made during the development of a model can have a significant impact on the success of model simulations. The development of a package requires many different skills, including those of engineering, mathematics and computing.