Numerical and experimental hydrodynamic analysis of catamaran with and without V-like center bow

Negahdari, Mohammad Reza; Najafi, Amin; Ahmadi, Peyman; Kheradmand, Seyed Mahmood

doi:10.52547/ijmt.10.18.13

Write your message

ارسال به ایمیل

Volume 17 - ijmt 2023, 17 - : 13-24 | Back to browse issues page

‎ 10.52547/ijmt.10.18.13

‎ 20.1001.1.23456000.2023.17.0.2.8

Mendeley

Zotero

RefWorks

Negahdari M R, Najafi A, Ahmadi P, Kheradmand S M. Numerical and experimental hydrodynamic analysis of catamaran with and without V-like center bow. ijmt 2023; 17 :13-24
URL: http://ijmt.ir/article-1-797-en.html

Numerical and experimental hydrodynamic analysis of catamaran with and without V-like center bow

Mohammad Reza Negahdari ^*

¹, Amin Najafi²

, Peyman Ahmadi²

, Seyed Mahmood Kheradmand²

1- Chabahar Maritime University
2- Imam Hossein comprehensive University

Abstract: (912 Views)

Catamaran added V-like center bow (INCAT) is investigated as a wave-piercing vessel to decrease vertical acceleration and diminish slam events during sea-keeping operation. The catamaran and the vessel bow were modeled and the vertical acceleration of model was validated with experimenal test. The geometry of V-like center-bow such as slope of center bow and elevation from demi-hulls was optimized numerically in the case of 3 different slops of bow model. Considering different center bow elevation of 9.5 and 49.5 mm, the pressure contour of the INCAT vessels was compared numerically. The optimized INCAT vessel as well as the catamaran vessel was fabricated and exposed experimentally in a wavy environment with two significant wave height of 11 and 17 cm using a towing tank test. Thus hydrodynamic parameters such as vertical acceleration, heave, pitch, and resistance force were measured and compared. The results show no slam event in the environment with a wave height of 11 cm but the slam event occurr at the experiment with the wave height of 17 cm.

Keywords: Catamaran, INCAT, V-like center bow, Vertical acceleration, slam

Full-Text [PDF 1275 kb] (473 Downloads)

Type of Study: Research Paper | Subject: Ship Hydrodynamic
Received: 2022/04/10 | Accepted: 2023/01/2

Send email to the article author

Rights and permissions
	This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.