Repository logo
  • English
  • 中文
Log In
Have you forgotten your password?
  1. Home
  2. College of Engineering / 工學院
  3. Civil Engineering / 土木工程學系
  4. Computational modelling of geomorphic mountain flows based on multi-component shallow water theory
 
  • Details

Computational modelling of geomorphic mountain flows based on multi-component shallow water theory

Date Issued
2003
Date
2003
Author(s)
卡艾瑋  
DOI
912211E002040
URI
http://ntur.lib.ntu.edu.tw//handle/246246/2797
Abstract
The three-year research programme pursues the development of novel modelling tools for the description and prediction of geomorphic mountain flows. The approach is based on a multi-component, shallow layer description of horizontal two-dimensional flow. The overall programme aims to: 1) establish governing equations accounting for the coupled motion of water, liquefied soil, and transported sediment; 2) develop and implement suitable computational techniques; 3) test the equations and computations against theoretical, experimental and field information. As planned in the original proposal, work in the first year has concentrated on the development of the theoretical framework and computational solver. The main theoretical result is a set of general geomorphic flow equations which account for: 1) separate sub-layers having their own density, velocity and rheology; 2) mass and momentum exchanges across sub-layers as well as along and transverse to the flow; 3) modes of support of the granular phase which include contact-load, pore-pressure support, and turbulent suspension. From a computational point of view, the main achievement has been the completion of a second-order accurate, two-dimensional solver for two-layer flows, and its successful application to various geomorphic test cases. The most interesting computation performed to date with the new solver has been the simulation of an evolving field of antidune bedforms. Further revisions to both the theoretical and computational methods will no doubt prove necessary as we proceed. Nonetheless, the basic tools are ready for the next steps planned for the second and third year of the programme. A key part of these efforts will be to carry out detailed comparisons of model results with available laboratory and field data.
Publisher
臺北市:國立臺灣大學土木工程學系暨研究所
Type
report
File(s)
Loading...
Thumbnail Image
Name

912211E002040.pdf

Size

1.55 MB

Format

Adobe PDF

Checksum

(MD5):15df22a491c2077f1f6aeba31e027573

臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

總館學科館員 (Main Library)
醫學圖書館學科館員 (Medical Library)
社會科學院辜振甫紀念圖書館學科館員 (Social Sciences Library)

開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

  • 請確認所上傳的全文是原創的內容,若該文件包含部分內容的版權非匯入者所有,或由第三方贊助與合作完成,請確認該版權所有者及第三方同意提供此授權。
    Please represent that the submission is your original work, and that you have the right to grant the rights to upload.
  • 若欲上傳已出版的全文電子檔,可使用Open policy finder網站查詢,以確認出版單位之版權政策。
    Please use Open policy finder to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
  • 網站簡介 (Quickstart Guide)
  • 使用手冊 (Instruction Manual)
  • 線上預約服務 (Booking Service)
  • 方案一:臺灣大學計算機中心帳號登入
    (With C&INC Email Account)
  • 方案二:ORCID帳號登入 (With ORCID)
  • 方案一:定期更新ORCID者,以ID匯入 (Search for identifier (ORCID))
  • 方案二:自行建檔 (Default mode Submission)
  • 方案三:學科館員協助匯入 (Email worklist to subject librarians)

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science