scholarly journals Estimating the instability criterion of vehicles in urban flooding by an entropic method

Urban Climate ◽  
2022 ◽  
Vol 41 ◽  
pp. 101069
Author(s):  
Lufeng Gou ◽  
Yun Liu ◽  
Yongpeng Zhang ◽  
Zhongfan Zhu ◽  
Dingzhi Peng ◽  
...  
Keyword(s):  
Instability Criterion ◽  
Urban Flooding

A STUDY ON PHYSICAL VULNERABILITY AND IMPROVEMENT ACTIONS OF RESIDENTIAL BUILDINGS TO URBAN FLOODING IN THE EASTERN DHAKA, BANGLADESH

2020 ◽  
Vol 85 (772) ◽  
pp. 1229-1239 ◽  
Author(s):  
Md. Nawrose FATEMI ◽  
Michihiro KITA ◽  
Seth Asare OKYERE ◽  
Motoki SHIMODA ◽  
Shigeki MATSUBARA
Keyword(s):  
Residential Buildings ◽  
Urban Flooding ◽  
Physical Vulnerability

Unstructured mesh adaptivity for urban flooding modelling

2018 ◽  
Vol 560 ◽  
pp. 354-363 ◽  
Author(s):  
R. Hu ◽  
F. Fang ◽  
P. Salinas ◽  
C.C. Pain
Keyword(s):  
Unstructured Mesh ◽  
Urban Flooding ◽  
Mesh Adaptivity

Assessment of urban flooding by dual drainage simulation model RisUrSim

2005 ◽  
Vol 52 (5) ◽  
pp. 257-264 ◽  
Author(s):  
T.G. Schmitt ◽  
M. Thomas ◽  
N. Ettrich
Keyword(s):  
Simulation Model ◽  
Surface Flow ◽  
Water Levels ◽  
Model Verification ◽  
Urban Drainage ◽  
Urban Flooding ◽  
Insurance Company ◽  
Drainage Systems ◽  
Engineering Research ◽  
Urban Drainage Systems

The European research project in the EUREKA framework, RisUrSim is presented with its overall objective to develop an integrated planning tool to allow cost effective management for urban drainage systems. The project consortium consisted of industrial mathematics and water engineering research institutes, municipal drainage works as well as an insurance company. The paper relates to the regulatory background of European Standard EN 752 and the need of a more detailed methodology to simulate urban flooding. The analysis of urban flooding caused by surcharged sewers in urban drainage systems leads to the necessity of a dual drainage modeling. A detailed dual drainage simulation model is described based upon hydraulic flow routing procedures for surface flow and pipe flow. Special consideration is given to the interaction between surface and sewer flow during surcharge conditions in order to most accurately compute water levels above ground as a basis for further assessments of possible damage costs. The model application is presented for a small case study in terms of data needs, model verification and first simulation results.

Influence of urban forms on long-duration urban flooding: laboratory experiments and computational analysis

2021 ◽  
pp. 127034
Author(s):  
Xuefang Li ◽  
Sébastien Erpicum ◽  
Emmanuel Mignot ◽  
Pierre Archambeau ◽  
Michel Pirotton ◽  
...  
Keyword(s):  
Laboratory Experiments ◽  
Computational Analysis ◽  
Urban Flooding ◽  
Urban Forms ◽  
Long Duration

Construction of Urban Flooding Prevention System under “One City, One Executor, and One Network” Model: Case Study of Kunming, China

2021 ◽  
Vol 22 (3) ◽  
Author(s):  
Fei Zhao ◽  
Jingzhi Cai ◽  
Hongyun Zeng ◽  
Zhiqiang Xie ◽  
Qingyun Du ◽  
...  
Keyword(s):  
Network Model ◽  
Urban Flooding ◽  
Model Case ◽  
Prevention System

New Experimental Data and Analysis for Two-Phase Flow-Induced Vibration of Tube Bundles: Preliminary Results

2003 ◽  
Author(s):  
Deepanjan Mitra ◽  
Vijay K. Dhir ◽  
Ivan Catton
Keyword(s):  
Two Phase Flow ◽  
Structural Parameters ◽  
Cross Flow ◽  
Instability Criterion ◽  
Phase Flow ◽  
Flow Induced Vibration ◽  
Two Phase ◽  
Void Fractions ◽  
Comparison Of The Results ◽  
Square Array

In the past, fluid-elastic instability in two-phase flow has been largely investigated with air-water flow. In this work, new experiments are conducted in air-water cross-flow with a fully flexible 5 × 3 normal square array having pitch-to-diameter ratio of 1.4. The tubes have a diameter of 0.016 m and a length of 0.21 m. The vibrations are measured using strain gages installed on piano wires used to suspend the tubes. Experiments are carried out for void fractions from 0%–30%. A comparison of the results of the current tests with previous experiments conducted in air-water cross-flow shows that instability occurs earlier in a fully flexible array as compared to a flexible tube surrounded by rigid tubes in an array. An attempt is made to separate out the effects of structural parameters of three different experimental datasets by replotting the instability criterion by incorporating the instability constant K, in the reduced velocity parameter.

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