Blade performance on the effect of whale wavy leading- edge by using meshfree analysis
This study investigates the application of a wavy leading edge (WLE)—based on the flipper of a humpback whale—on a water turbine blade and its effect on blade performance. The analysis was conducted using a numerical tool known as MeshFree. Focusing on the blade application in a water turbine, a wav...
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my-utm-ep.814662019-08-23T05:18:56Z Blade performance on the effect of whale wavy leading- edge by using meshfree analysis 2018 Mohamad Arba’i, Nurul Afiqah TA Engineering (General). Civil engineering (General) This study investigates the application of a wavy leading edge (WLE)—based on the flipper of a humpback whale—on a water turbine blade and its effect on blade performance. The analysis was conducted using a numerical tool known as MeshFree. Focusing on the blade application in a water turbine, a wavy leading edge was applied and adapted to the blade due to the proven capability of this feature in reducing turbine cut-in speed. The approach utilises a meshless method (MeshFree), which has been claimed to result in higher accuracy output compared to other well-known numerical tools such as the Finite Difference Method (FDM) and Finite Element Method (FEM). In this study, the subject was considered as a thin-plate element, and the formulation was made in MeshFree, with the processing conducted in MATLAB software. A number of outputs were obtained from the MeshFree method and then applied in a parametric study. A few sets of parameters were identified consisting of radius, number of nodes, and number of Gauss points, where all values were fixed prior to observing the effect of the wavy pattern on the maximum deflection of the blade. Then, the wavelength, amplitude, and curve at the corner of the blade were varied to observe their effect on blade deflection. The results show that the wavelength parameter had no significant effect on the blade deflection compared to the normal design of the blade unlike the amplitude and curve parameters. In sum, although the WLE factors can increase the turbine’s effective energy production, it could also contribute to higher maximum deflection on the blade when amplitude is increased. However, this increment could be controlled by increasing the curve at the corner edge of the blade. 2018 Thesis http://eprints.utm.my/id/eprint/81466/ http://eprints.utm.my/id/eprint/81466/1/NurulAfiqahMohamadMSKA2018.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:125094 masters Universiti Teknologi Malaysia Civil Engineering |
| institution |
Universiti Teknologi Malaysia |
| collection |
UTM Institutional Repository |
| language |
English |
| topic |
TA Engineering (General) Civil engineering (General) |
| spellingShingle |
TA Engineering (General) Civil engineering (General) Mohamad Arba’i, Nurul Afiqah Blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| description |
This study investigates the application of a wavy leading edge (WLE)—based on the flipper of a humpback whale—on a water turbine blade and its effect on blade performance. The analysis was conducted using a numerical tool known as MeshFree. Focusing on the blade application in a water turbine, a wavy leading edge was applied and adapted to the blade due to the proven capability of this feature in reducing turbine cut-in speed. The approach utilises a meshless method (MeshFree), which has been claimed to result in higher accuracy output compared to other well-known numerical tools such as the Finite Difference Method (FDM) and Finite Element Method (FEM). In this study, the subject was considered as a thin-plate element, and the formulation was made in MeshFree, with the processing conducted in MATLAB software. A number of outputs were obtained from the MeshFree method and then applied in a parametric study. A few sets of parameters were identified consisting of radius, number of nodes, and number of Gauss points, where all values were fixed prior to observing the effect of the wavy pattern on the maximum deflection of the blade. Then, the wavelength, amplitude, and curve at the corner of the blade were varied to observe their effect on blade deflection. The results show that the wavelength parameter had no significant effect on the blade deflection compared to the normal design of the blade unlike the amplitude and curve parameters. In sum, although the WLE factors can increase the turbine’s effective energy production, it could also contribute to higher maximum deflection on the blade when amplitude is increased. However, this increment could be controlled by increasing the curve at the corner edge of the blade. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Mohamad Arba’i, Nurul Afiqah |
| author_facet |
Mohamad Arba’i, Nurul Afiqah |
| author_sort |
Mohamad Arba’i, Nurul Afiqah |
| title |
Blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| title_short |
Blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| title_full |
Blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| title_fullStr |
Blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| title_full_unstemmed |
Blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| title_sort |
blade performance on the effect of whale wavy leading- edge by using meshfree analysis |
| granting_institution |
Universiti Teknologi Malaysia |
| granting_department |
Civil Engineering |
| publishDate |
2018 |
| url |
http://eprints.utm.my/id/eprint/81466/1/NurulAfiqahMohamadMSKA2018.pdf |
| _version_ |
1747818338716745728 |