Design of 'minimum energy' culvert sections

Culverts are expensive structures to construct, especially if their construction entails tunnelling through high grounds. The conventional practice in Singapore is to design a culvert to have the same section as the storm channels upstream and downstream of the culvert, so as to maintain uniform flo...

Full description

Saved in:
Bibliographic Details
Main Author: Muhammad Isnin Akahmat.
Other Authors: Shuy Eng Ban
Format: Final Year Project
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/16316
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-16316
record_format dspace
spelling sg-ntu-dr.10356-163162023-03-03T17:00:07Z Design of 'minimum energy' culvert sections Muhammad Isnin Akahmat. Shuy Eng Ban School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Water resources Culverts are expensive structures to construct, especially if their construction entails tunnelling through high grounds. The conventional practice in Singapore is to design a culvert to have the same section as the storm channels upstream and downstream of the culvert, so as to maintain uniform flow through the culvert section. Hydraulically it is possible to design a culvert with a smaller section, allowing the flood flow to pass through at a higher velocity and Froude number, without causing substantial flow back-up upstream. This can be achieved by designing the culvert with a slightly depressed bed. The culvert width can also be reduced further, which in turn could reduce the overall cost of culvert construction. The culvert section can be optimally reduced by passing the flood flow through at near critical flow conditions, or at near minimum specific energy. However steps must be taken to ensure that the flow will not reach super critical flow and turbulent which is undesirable. This project is to investigate the feasibility of adopting such ‘minimum energy’ culvert design sections in Singapore. This is done by running a simulation program using a software called Hydraulic Engineering Centre – River Analysis System (HEC-RAS). The final aim is to propose the optimum design of the culverts in achieving the objective of this project. Finally, the results of the simulation, the problems encountered during the study, a review of the application and future enhancement are discussed in details in several chapters of this report. Bachelor of Engineering (Environmental Engineering) 2009-05-25T04:01:04Z 2009-05-25T04:01:04Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16316 en Nanyang Technological University 53 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Water resources
spellingShingle DRNTU::Engineering::Civil engineering::Water resources
Muhammad Isnin Akahmat.
Design of 'minimum energy' culvert sections
description Culverts are expensive structures to construct, especially if their construction entails tunnelling through high grounds. The conventional practice in Singapore is to design a culvert to have the same section as the storm channels upstream and downstream of the culvert, so as to maintain uniform flow through the culvert section. Hydraulically it is possible to design a culvert with a smaller section, allowing the flood flow to pass through at a higher velocity and Froude number, without causing substantial flow back-up upstream. This can be achieved by designing the culvert with a slightly depressed bed. The culvert width can also be reduced further, which in turn could reduce the overall cost of culvert construction. The culvert section can be optimally reduced by passing the flood flow through at near critical flow conditions, or at near minimum specific energy. However steps must be taken to ensure that the flow will not reach super critical flow and turbulent which is undesirable. This project is to investigate the feasibility of adopting such ‘minimum energy’ culvert design sections in Singapore. This is done by running a simulation program using a software called Hydraulic Engineering Centre – River Analysis System (HEC-RAS). The final aim is to propose the optimum design of the culverts in achieving the objective of this project. Finally, the results of the simulation, the problems encountered during the study, a review of the application and future enhancement are discussed in details in several chapters of this report.
author2 Shuy Eng Ban
author_facet Shuy Eng Ban
Muhammad Isnin Akahmat.
format Final Year Project
author Muhammad Isnin Akahmat.
author_sort Muhammad Isnin Akahmat.
title Design of 'minimum energy' culvert sections
title_short Design of 'minimum energy' culvert sections
title_full Design of 'minimum energy' culvert sections
title_fullStr Design of 'minimum energy' culvert sections
title_full_unstemmed Design of 'minimum energy' culvert sections
title_sort design of 'minimum energy' culvert sections
publishDate 2009
url http://hdl.handle.net/10356/16316
_version_ 1759852945774477312