Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Numerical Solution of Unsteady Flows in Open Channels.
Author Gunaratna, Daniel J. ; Perkin, Frank E. ;
CORP Author Massachusetts Inst. of Tech., Cambridge. Hydrodynamics Lab.
Year Published 1970
Report Number Rept. no. ;127 ;R70-44; DI-14-01-0001-1988 ;DI-14-31-0001-3159; MIT-DSR-71934; 02202,; C-1495(1988)(2)
Stock Number PB-196 159
Additional Subjects ( Open channel flow ; Numerical analysis) ; ( Unsteady flow ; Open channel flow) ; Finite difference theory ; Equations of motion ; Saint Venant equations
Library Call Number Additional Info Location Last
NTIS  PB-196 159 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 262p
A finite difference scheme was developed to integrate the St. Venant equations over a wide range of transient flow conditions. The scheme was incorporated into a useful computer program. Systematic testing compared the difference scheme with observed data and linearized analytical solutions. The weighted residual method using the Galerikan technique of minimizing proved to be a relatively simple method for deriving a minimum error finite difference scheme. Solution of the set of simultaneous algebraic equations generated by the implicit difference scheme was effected using the influence function method. This provides a very efficient procedure for solving the equations associated with a network of channels. (WRSIC abstract)