Civil Engineering Journal
Vol 9, No 1 (2023): January

Performance Comparison of Crossflow Turbine Configuration Upper Blade Convex and Curvature by Computational Method

Dendy Adanta (Department of Mechanical Engineering, Faculty of Engineering, Universitas Sriwijaya, 30862, Sumatera,)
Dewi Puspita Sari (Study Program of Mechanical Engineering Education, Faculty of Education, Universitas Sriwijaya, 30862, Sumatera,)
Imam Syofii (Study Program of Mechanical Engineering Education, Faculty of Education, Universitas Sriwijaya, 30862, Sumatera,)
Aji Putro Prakoso (Department of Mechanical Engineering, Faculty of Manufacturing Technology, Universitas Jenderal Ahmad Yani, West Java,)
Muhammad Amsal Ade Saputra (Department of Mechanical Engineering, Faculty of Engineering, Universitas Sriwijaya, 30862, Sumatera,)
Ismail Thamrin (Department of Mechanical Engineering, Faculty of Engineering, Universitas Sriwijaya, 30862, Sumatera,)



Article Info

Publish Date
01 Jan 2023

Abstract

A pico-hydro-type crossflow turbine (CFT) with an off-grid system configuration is a suitable option to increase the electrification ratio in remote or rural areas because it has a simple shape and can be applied in run-of-river conditions. Yet, a comprehensive study is necessary for the CFT to be applied to run-of-river conditions (low head and extreme fluctuation discharge), since this is categorized as an impulse turbine. One solution to optimize the CFT’s performance in this context is to increase the lift force. Hence, this study investigated the effect of the upper blade of the CFT with convex and curved configurations using the computational fluid dynamics (CFD) method. The CFD transient approach uses a moving mesh feature, and the solver is pressure-based in low-head conditions (5 m pressure). The CFD results and analysis of variance (ANOVA) calculation results from this study reveal that the upper CFT affects the performance of the turbine. The relationship of the CFT performance with the rotation and specific speed is parabolic. The express empirical law relation for performance to rotation is a four-order polynomial, and for performance to a specific speed, a three-order polynomial. Based on empirical laws, a CFT with a convex blade is recommended for conditions with low head and extreme fluctuation discharge since it has a wider range of specific speeds than a curved blade, propeller, or Kaplan, Pelton, or Francis turbine. Doi: 10.28991/CEJ-2023-09-01-012 Full Text: PDF

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Journal Info

Abbrev

cej

Publisher

Subject

Civil Engineering, Building, Construction & Architecture

Description

Civil Engineering Journal is a multidisciplinary, an open-access, internationally double-blind peer -reviewed journal concerned with all aspects of civil engineering, which include but are not necessarily restricted to: Building Materials and Structures, Coastal and Harbor Engineering, ...