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Paper Information

Journal:   SCIENTIA IRANICA   2014 , Volume 21 , Number 3 (TRANSACTIONS B: MECHANICAL ENGINEERING); Page(s) 600 To 608.
 
Paper: 

EXPERIMENTAL AND NUMERICAL STUDIES ON RESISTANCE OF A CATAMARAN VESSEL WITH NON-PARALLEL DEMIHULLS

 
 
Author(s):  EBRAHIMI A.*, RAD M., HAJILOUY A.
 
* DEPARTMENT OF MARINE ENGINEERING, CHABAHAR MARITIME UNIVERSITY, CHABAHAR, IRAN
 
Abstract: 

In common catamaran vessels, demihulls are parallel to each other. In this paper, the total resistance of a catamaran vessel with non-parallel demihulls is investigated experimentally and numerically. Experiments are carried out at different Separation Ratios (S.R.), that is the ratio of fore to aft separation of the catamaran demihulls; and also in two ratios of length to separation in amidships (L/Sm). The FLUENT solver, based on the Finite Volume Method (FVM), was used for numerical solution. Applying the VOF model, the free surface around the catamaran vessel and total resistance are calculated and compared with experimental results. Finally, the frictional resistance of the catamaran from the ITTC 1957 correlation line is calculated and compared with CFD frictional resistance. The results show that non-parallel demihulls cause total resistance to increase at Froude numbers below 0.8, and decrease at Froude Numbers over 0.8. In the numerical part, at low Froude numbers, numerical results have an error up to 10% relative to model test results, but error increases at high Froude numbers up to 25%.

 
Keyword(s): CATAMARAN VESSEL, RESISTANCE, NON-PARALLEL DEMIHULLS, MODEL EXPERIMENTS, NUMERICAL INVESTIGATION
 
 
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Click to Cite.
APA: Copy

EBRAHIMI, A., & RAD, M., & HAJILOUY, A. (2014). EXPERIMENTAL AND NUMERICAL STUDIES ON RESISTANCE OF A CATAMARAN VESSEL WITH NON-PARALLEL DEMIHULLS. SCIENTIA IRANICA, 21(3 (TRANSACTIONS B: MECHANICAL ENGINEERING)), 600-608. https://www.sid.ir/en/journal/ViewPaper.aspx?id=404061



Vancouver: Copy

EBRAHIMI A., RAD M., HAJILOUY A.. EXPERIMENTAL AND NUMERICAL STUDIES ON RESISTANCE OF A CATAMARAN VESSEL WITH NON-PARALLEL DEMIHULLS. SCIENTIA IRANICA. 2014 [cited 2021May11];21(3 (TRANSACTIONS B: MECHANICAL ENGINEERING)):600-608. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=404061



IEEE: Copy

EBRAHIMI, A., RAD, M., HAJILOUY, A., 2014. EXPERIMENTAL AND NUMERICAL STUDIES ON RESISTANCE OF A CATAMARAN VESSEL WITH NON-PARALLEL DEMIHULLS. SCIENTIA IRANICA, [online] 21(3 (TRANSACTIONS B: MECHANICAL ENGINEERING)), pp.600-608. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=404061.



 
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