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Investigation of pitch chord ratio effect on axial hydro turbine performance
Suprayetno N.a,b, Sutikno P.a, Tandian N.P.a, Hartono F.a
a Fluid Machinery Laboratory, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung, Indonesia
b Direct. General of New Renewable Energy and Energy Conservation, Ministry of Energy and Mineral Resources, Menteng, Jakarta Pusat, 10320, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2018 Author(s).The present study is aimed to determine the effect of pitch chord ratio on an axial turbine rotor blade design. The selected swirling flow criterion used in this study is mixed vortex. There are two models of turbine rotor that used in this study and called as Turbine 1 and Turbine 2. Both model use the same stator. Pitch chord ratio of Turbine 1 is calculated using constant diffusion factor, while turbine 2 using lift coefficient obtained from cascade analysis. Turbine design is performed through quasi 3 dimensional (Q3D) method where meridional channel from hub to tip is analyzed by actuator disc radial equilibrium method and blade to blade flow is analyzed using cascade panel method. Validation of the design is performed through computational fluid dynamic (CFD) to achieve the best performance and characteristic of each model. The result of CFD at the design point n 450 rpm showed that the Turbine 1 produces efficiency is about 85.16% while Turbine 2 is 86.82%. Turbine 1 requires greater mass flow rate than the Turbine 2. The power of Turbine 1 has increased with the increase of head, but there is decrease in efficiency when the head is increased. The power and efficiency of Turbine 2 will increase with the increasing of head, but the increasing of efficiency is smooth.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors would like to express special thanks to the Research Center of New and Renewable Energy, Center for Research and Community Services ITB and Ministry of Energy and Mineral Resources, Indonesia for financial support, chance to study and research.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/1.5046611[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]