Deciding optimal parameter for internal wavemaker using coupling of Dakota and OpenFOAM

Title
Deciding optimal parameter for internal wavemaker using coupling of Dakota and OpenFOAM
Author(s)
이웅현; 오상호; 이상돈
KIOST Author(s)
Oh, Sang Ho(오상호)
Publication Year
2018-06-26
Abstract
In order to generate a water wave adequately in numerical simulation, several specialized techniques have been developed: internal wavemaker, static boundary method and moving boundary method. For internal wavemaker, especially, geometry of mass source region needs to be decided minimizing numerical error. Chen and Hsiao [1] suggested the method to set the dimension of wavemaker, deriving height from linear wave theory and constructing empirical formula about wavenumber and width of wavemaker, with FLOW-3D code. The procedure, however, required hundreds of trial calculations, followed by excessive computational cost. In this paper, automated process to find optimal geometry for given relative water depth is proposed, introducing coupling of DAKOTA and OpenFOAM. The waves2Foam utility had been modified to simulate the generation of second-order stokes wave and linked with DAKOTA to control the input file and observe the output file. mass source region needs to be decided minimizing numerical error. Chen and Hsiao [1] suggested the method to set the dimension of wavemaker, deriving height from linear wave theory and constructing empirical formula about wavenumber and width of wavemaker, with FLOW-3D code. The procedure, however, required hundreds of trial calculations, followed by excessive computational cost. In this paper, automated process to find optimal geometry for given relative water depth is proposed, introducing coupling of DAKOTA and OpenFOAM. The waves2Foam utility had been modified to simulate the generation of second-order stokes wave and linked with DAKOTA to control the input file and observe the output file.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23202
Bibliographic Citation
13th OpenFOAM Workshop, pp.197 - 200, 2018
Publisher
Shanghai Jio Tong University
Type
Conference
Language
English
Publisher
Shanghai Jio Tong University
Related Researcher
Research Interests

Coastal engineering,Physical experiment,Coastal wave,항만공학,수리실험,연안파랑

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