Assessment of EFD and CFD capability for KRISO Container Ship added power in head and oblique waves

Yugo Sanada; Dong-Hwan Kim; Hamid Sadat-Hosseini; Frederick Stern; Md Alfaz Hossain; Ping-Chen Wu; Yasuyuki Toda; Janne Otzen; Claus Simonsen; Moustafa Abdel-Maksoud; Martin Scharf; Gregory Grigoropoulos

doi:10.1016/j.oceaneng.2021.110224

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Assessment of EFD and CFD capability for KRISO Container Ship added power in head and oblique waves

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Assessment of EFD and CFD capability for KRISO Container Ship added power in head and oblique waves

Yugo Sanada, Dong-Hwan Kim, Hamid Sadat-Hosseini, Frederick Stern, Md Alfaz Hossain, Ping-Chen Wu, Yasuyuki Toda, Janne Otzen, Claus Simonsen, Moustafa Abdel-Maksoud, …

Ocean engineering, Vol.243, p.110224

01/01/2022

DOI: 10.1016/j.oceaneng.2021.110224

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Abstract

EFD and CFD capability assessment for KCS added power (AP) in head and oblique waves are conducted based on experiments from three facilities using three different model sizes and CFD from five institutes. The analysis includes the standard deviation (SD) in both CFD and EFD to identify facility biases, scale effects and CFD errors for motions, self-propulsion (SP), propulsive efficiency (η) and AP. The overall SD%D (D: EFD values) for all calm water SP variables and AP variables is 9% and 11%, respectively. SP correlates with Re via advance coefficient J(Re) and SP points lie along nondimensional propeller load curves. AP vs. λ/L correlates with large bow relative motion such that the wave effects on J(λ/L) have the same scaling as the model size effect J(Re). Logarithmic derivative analysis of EFD data shows that for head waves the added resistance (AR) and η are responsible for 70 vs. 30%AP, respectively, whereas for oblique waves the AR and η are responsible for 55 vs. 38%AP, respectively. The overall conclusion is that the experimental and CFD approaches are of sufficient accuracy to be useful for design. •EFD/CFD capability is assessed for KCS added power in head/oblique waves is conducted based on multiple facilities/codes.•Standard deviations (SD) are evaluated to identify facility biases, scale effects and CFD errors for selected variables.•The average SD for all calm water self-propulsion (SP) variables is 9% of EFD values (D) and for AP variables is 11%D.•SD is smallest to largest for SP, η and motions and individual facility uncertainty estimates are overly optimistic.•The CFD SD trends are like the experiments and the average errors are comparable to the root sum square of the EFD/CFD SD.

Added powering

Added resistance

CFD

EFD

KCS

Details

Title: Subtitle: Assessment of EFD and CFD capability for KRISO Container Ship added power in head and oblique waves
Creators: Yugo Sanada - University of Iowa
Dong-Hwan Kim - University of Iowa
Hamid Sadat-Hosseini - University of North Texas, USA
Frederick Stern - University of Iowa
Md Alfaz Hossain - The University of Osaka
Ping-Chen Wu - National Cheng Kung University
Yasuyuki Toda - The University of Osaka
Janne Otzen - FORCE Technology, Denmark
Claus Simonsen - FORCE Technology, Denmark
Moustafa Abdel-Maksoud - Hamburg University of Technology
Martin Scharf - Hamburg University of Technology
Gregory Grigoropoulos - National Technical University
Resource Type: Journal article
Publication Details: Ocean engineering, Vol.243, p.110224
DOI: 10.1016/j.oceaneng.2021.110224
ISSN: 0029-8018
eISSN: 1873-5258
Publisher: Elsevier Ltd
Grant note: DOI: 10.13039/100000006, name: Office of Naval Research
Language: English
Date published: 01/01/2022
Academic Unit: IIHR--Hydroscience and Engineering; Mechanical Engineering
Record Identifier: 9984201433702771

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