Research Article
Jan 1980
Formulating Lake Models which Preserve Spectral Statistics
Publication: Journal of the Hydraulics Division
Volume 106, Issue 1
Abstract
The ability of numerical lake models to predict verifiable results is very poor. Difficulties with the popular point by point verification method are intractable when confronted with these turbulent flows which have only reproduceable statistics. A lake transport model is formulated which permits the calculation of not only mean field quantities but the known spectral details of turbulent flow. Higher order spatial averaging of the nonlinear terms by a low pass filter results in a sequence of third order differential terms. Additionally, the correlated terms resulting from the filtration are closed with the Smagorinsky subgrid scale viscosity representation. Finite difference representations were used with second order accurate schemes on the third order corrective differential terms and fourth order on all others. Mean flow field computations were verified by intercomparison with existing rigid lid circulation models. Differences between computations were negligible with only small increases in time and storage.
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Published In
Journal of the Hydraulics Division
Volume 106 • Issue 1 • January 1980
Pages: 1 - 19
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Jan 1980
Published online: Feb 3, 2021
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Authors
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Christos Babajimopoulos, AM.ASCE
Research Assoc., Dept. of Civ. Engrg., The Ohio State Univ., Columbus, Ohio
Keith W. Bedford, AM.ASCE
Assoc. Prof. of Civ. Engrg., The Ohio State Univ., Columbus, Ohio
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.