On the determination of hydraulic model parameters using the adjoint state formulation

Vijay Panchang, James J. O’Brien

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The estimation of various parameters involved in numerical modeling of hydraulic systems is discussed. The method described here uses the adjoint equation approach, which has also been used in ground-water hydrology, with the strong constraint formulation in the relevant functional. The parameter-correction equation is used to modify parameter estimates, with the philosophy that there is no modification when the data misfit vanishes. The application to a set of equations (e.g., equations of motion) is illustrated. In particular, this dataassimilation method is used to determine the friction factor for tidal rivers. The method is thus an alternative to those suggested by Dronkers,17 Yeh and Becker,18 or Chiu and Isu19.

Original languageEnglish
Title of host publicationModeling Marine Systems
Subtitle of host publicationVolume I
PublisherCRC Press
Pages5-18
Number of pages14
ISBN (Electronic)9781351083140
ISBN (Print)084934221X, 9781315895598
DOIs
Publication statusPublished - 1 Jan 2018

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ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Panchang, V., & O’Brien, J. J. (2018). On the determination of hydraulic model parameters using the adjoint state formulation. In Modeling Marine Systems: Volume I (pp. 5-18). CRC Press. https://doi.org/10.1201/9781351074698