Comparative Study on the Open Boundary Conditions of Shallow Flows

9 pages•Published: September 20, 2018

Abstract

In order to accurately simulate physical phenomena, appropriate boundary conditions must be implemented. Where some information propagate along the characteristic curves as in the hyperbolic system such as shallow water equations (SWEs), open boundary conditions (OBCs) must be designed so that such an event should also be maintained even at the boundaries. In other words, OBCs of SWEs must pass information out of the domain and receive the incoming information without any numerical distortion. If OBCs do not reflect the characteristics of SWE, errors will occur and contaminate the information in the internal domain. This study compares several OBCs based on the hyperbolic characteristics of SWE and shows that OBCs derived using hyperbolic characteristic performs better in the several OBCs.

Keyphrases: hll, muscl hancock, open boundary condition, shallow water equation, wave paddle

In: Goffredo La Loggia, Gabriele Freni, Valeria Puleo and Mauro De Marchis (editors). HIC 2018. 13th International Conference on Hydroinformatics, vol 3, pages 1013-1021.

Links:	https://easychair.org/publications/paper/kCwb
	https://doi.org/10.29007/pf1g

BibTeX entry

@inproceedings{HIC2018:Comparative_Study_Open_Boundary,
  author    = {Jaeyoung Jung and Jin Hwan Hwang},
  title     = {Comparative Study on the Open Boundary Conditions of Shallow Flows},
  booktitle = {HIC 2018. 13th International Conference on Hydroinformatics},
  editor    = {Goffredo La Loggia and Gabriele Freni and Valeria Puleo and Mauro De Marchis},
  series    = {EPiC Series in Engineering},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2516-2330},
  url       = {/publications/paper/kCwb},
  doi       = {10.29007/pf1g},
  pages     = {1013-1021},
  year      = {2018}}

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