Research Article
May 1982
Minimum Energy and Energy Dissipation Rate
Publication: Journal of the Hydraulics Division
Volume 108, Issue 5
Abstract
The theory of minimum energy and the minimum rate of energy dissipation have been applied to flow around bluff bodies, stability of falling bodies, statics and dynamics of gas bubbles, generation of ripples and dunes, and drag reduction by suspended load. These examples are used to illustrate how the minimization principles (variational principles) can be used to solve the problems of dissipative mechanical systems in static or dynamic equilibrium conditions. The minimization principle can be used independently or in tandem with the equations of motion to solve problems of a large degree of freedom. The equilibrium solution thus obtained has been shown to contain certain implicit information on the stability characteristics of the equilibrium state. For this reason, the method is not only a viable alternative to the vector mechanics method, but it also provides a relatively simple way of determining certain stability criteria.
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Published In
Journal of the Hydraulics Division
Volume 108 • Issue 5 • May 1982
Pages: 690 - 706
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: May 1982
Published online: Feb 3, 2021
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Authors
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Charles C. S. Song
Prof., St. Anthony Falls Hydraulic Lab., Dept. of Civ. and Mineral Engrg., Univ. of Minnesota, Minneapolis, Minn. 55414
Chin Ted Yang, M.ASCE
Civ. Engr., U.S. Dept. of the Interior, Bureau of Reclamation, Engrg. and Research Center, Denver, Colo. 80225
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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.