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122674

Hydrodyamic Efficiency of Double Pontoon Supported on Piles.

Article

Last updated: 22 Jan 2023

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-

Tags

Civil Engineering

Abstract

The efficiency of a double fixed pontoon supported on two rows of piles was examined experimentally under regular waves. The breakwater efficiency is presented as a function of transmission, reflection, and energy loss coefficients. Regular waves with wide ranges of wave heights and periods with constant water depth were used. Different parameters of double fixed pontoon and supporting pile systems were also tested. It was found that the transmission coefficient, Kt, decreases with the increasing value of the relative breakwater draft, did, and with the decreasing values of both the relative gap between two pontoons, al b, and the pile gap-diameter ratio, G/D. Pile system improves the efficiency of double Pontoon by about (7-16) % when G/D = 0.5 and al b = 1.0. The usage of pile system with a double fixed pontoon is more effective in case of small gaps between piles. It is possible to achieve Kt values less than 0.25 when did = 0.30, a/b = 1.0, and G/D = 0.50. Simple empirical equations were developed for estimating both the wave transmission and reflection coefficients by using non-linear regression analysis. In addition, the proposed breakwater model gives a reasonable efficiency compared with other pontoon types. 

DOI

10.21608/bfemu.2011.122674

Authors

First Name

A.

Last Name

Zidan

MiddleName

R.

Affiliation

Irrigation and Hydraulics Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

O.

Last Name

Rageh

MiddleName

S.

Affiliation

Irrigation and Hydraulics Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

Th.

Last Name

Sarhan

MiddleName

E.

Affiliation

Irrigation and Hydraulics Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

El-Sharabasy

Last Name

M.

MiddleName

-

Affiliation

Irrigation and Hydraulics Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

Volume

36

Article Issue

1

Related Issue

17855

Issue Date

2011-03-01

Receive Date

2011-01-11

Publish Date

2020-11-11

Page Start

1

Page End

20

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 36_Issue 1_Pages 1-20.pdf

PDF . 244.1kB

Link

https://bfemu.journals.ekb.eg/article_122674.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=122674

Order

6

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023