NUMERICAL SIMULATIONS OF INUNDATION FLOWS OVER DRYING AND WETING TOPOGRAPHY

• SHIGE-EDA Mirei

  九州工業大学 工学部建設社会工学科

• AKIYAMA Juichiro

  九州工業大学 工学部建設社会工学科

• SHIGEOKA Hiromi

  九州工業大学大学院 工学研究科

Bibliographic Information

Other Title

• ドライ・ウェット状態となる地形起伏がある場での氾濫流の数値シミュレーション

Abstract

A numerical model for 2D inundation flows over a drying and wetting topography is developed. The model is based on Spatial Averaged Finite volume method on Unstructured grid using FDS technique for 2D Free-surface flows (SA-FUF-2DF model). A new procedure for a dry/wet boundary over a topography is incorporated into the model. The procedure modify the bed elevation of dry cell to satisfy zero flux across the cell edge between dry and wet cell when the non-physical flow is occurred. The model is verified against two experimental data of steady and unsteady flow over wetting /drying topography. It shows that the model can reproduce the complex behavior of the flows with reasonable accuracy as well as preserve the stable calculation and zero mass error.

Journal

• PROCEEDINGS OF HYDRAULIC ENGINEERING

  PROCEEDINGS OF HYDRAULIC ENGINEERING 51 781-786, 2007

  Japan Society of Civil Engineers

Keywords

• Flood flows
• dry/wet condition
• complicated topography
• SA-FUF- 2DF model

Details

• CRID: 1390001205170567680
• NII Article ID: 130003842544
• DOI: 10.2208/prohe.51.781
• ISSN: 18849172
• ISSN: 09167374
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed