Energia Hidraulica

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    A numerical study of Hydro-Hydraulic energy on Undular Tidal Bore phenomenon
    (IOP Publishing, 2021-02) Putra, Y S ; Noviani, E ; Nurhasanah ; Nurhanisa, M ; Azwar, A
    A preliminary study of hydro-hydraulic energy on undular bores may support the invention of various kinds of technology related to renewable energy sourced from the potential of natural resources of Indonesia. Energy could be generated from one type of hydraulic jump that occurs in the river channel, namely undular tidal bore. The tidal bore phenomenon also exists in Indonesia, which occurs in the Kampar River, Riau, known as Bono. A numerical study of energy on wave-like tidal bore has been done for one type of bores, namely undular bores. The simulation of undular bores has been generated using the Computational Fluid Dynamics (CFD) approach assisted by the open-source CFD software, OpenFOAM which applied a turbulent model, namely one-equation Large Eddy Simulation (LES). The undular bores simulation in this study has been validated using experimental and numerical data from selected scientific references. Six simulations of undular bores have been performed based on six different values of Froude number, Fr = 1.04, 1.13, 1.20, 1.27, 1.34, and 1.41. Furthermore, the free surface of undular bores simulation was analyzed by emphasizing on the depth of upstream and downstream flows (d0 and d2 respectively). The rate of change of flow depth ( ), energy dissipation ( ), the rate of energy dissipation ( ), and hydraulic power dissipated of undular bores (PUB ) will increase as a function of the Froude number.
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    Rural renewable energy development: lessons learned from community-based renewable energy business model in East Sumba, Indonesia
    ( 2022) Prilandita, N ; Sagala, S ; Azhari, D ; Habib, A H
    Sumba Island is a remote region with great potential for renewable energy sources, as the Iconic Island of Renewable Energy designated through the Minister of Energy and Mineral Resources Decree No. 3051 K / 30 / MEM / 2015 is targeted to reach 100% of renewable energy usage with 95% of electrification by 2025. To reach this target, the participation of the community as the subject of every renewable energy project is essential. This paper aims to identify the lessons learned to enhance the community’s capacity in implementing the rural community-based renewable energy business model in Indonesia, with the case of the renewable energy business in Luku Wingir and Waimbidi Village - East Sumba. The result indicates that the Rural Community-based Renewable Energy Business Model in the case study need to be developed based on the fundamental strategies of building community capacity: (1) leadership development of the village community in East Sumba, (2) business organizational development in managing the renewable energy, (3) developing a significant role for the community in organizing renewable energy, and (4) adapting collaborative relations among multiple stakeholders in East Sumba.