New idea for controling rainfall in urban and suburban regions

Modaresi, Ehsan; Kheradmand , Yazdan

doi:10.29252/alkhass.2.2.1

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ALKHAS;The Journal of Environment, Agriculture and Biological Sciences

Volume 2, Issue 2 (4-2020) alkhass 2020, 2(2): 1-10 | Back to browse issues page

‎ 10.29252/alkhass.2.2.1

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Modaresi E, Kheradmand Y. New idea for controling rainfall in urban and suburban regions. alkhass 2020; 2 (2) :1-10
URL: http://alkhass.srpub.org/article-4-38-en.html

New idea for controling rainfall in urban and suburban regions

Ehsan Modaresi ^*

, Yazdan Kheradmand

M. Sc of Civil Engineering, Chaloos Branch, Islamic Azad University, Chaloos.Iran

Abstract: (2376 Views)

As catchments develop urbanized because of inhabitants growth the impervious surfaces shaped by buildings and pavements in the expense of permeable soil, depressions, and vegetation cause rainwater to stream rapidly over the landscape. To moderate the contrary impact of urbanization such as augmented flooding and depleted groundwater recharge, about the world, several best managements performs, in other words, green infrastructures have been practised, and soak-away rain garden is one of them. However, to have a swift calculation of soak-away rain gardens on a range of potential hydrologic circumstances (e.g., scope of the soak-away rain garden, saturated hydraulic conductivity of the in-situ soil, and saturated hydraulic conductivity of the filter media), hydrologic design strategies or design charts of soak-away rain gardens that are precise for local circumstances are not currently available for many areas including Singapore. Therefore, in this paper, with a design hyetograph of 3-month average rainfall strengths of Singapore, hydrologic design charts, particularly, design charts on overflow capacity (as a % of total runoff volume) of soak-away rain gardens are established for a range of potential hydrologic conditions by developing a mathematical model based on Richard’s equation using COMSOL Multiphysics, a finite element analysis and solver software package for different physics and engineering requests. These easy to use look-up hydrologic design diagrams will be of countless helpfulness for local managers in the design of soak-away rain gardens.

Keywords: Comsol, Design Diagrams, Rainfall, Flood volume

Full-Text [PDF 730 kb] (754 Downloads)

Type of Study: Research | Subject: Environmental Science (General)
Received: 2019/11/28 | Revised: 2020/03/2 | Accepted: 2020/03/23 | Published: 2020/04/1

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