Methodology in Setting-Up a Three-Dimensional Flow Model for the Strait of Malacca, Malaysia

As a rapidly developing and expanding country, Malaysia is expected to see an increase in its electricity consumption in the near future. Although known for its abundance of natural resources, specifically petroleum and natural gas, Malaysia has pledged to reduce its dependency on conventional resources and aims to become a carbon-neutral nation by the year 2050. This can be achieved by unlocking sustainable alternatives from the ocean, such as waves and tidal current energy, which are known to be abundant, continuous, and clean. Although various studies had identified several locations along the Straits of Malacca with potential to be used as deployment sites for tidal stream turbines, most of them were focused only on theoretical resource assessment. Since detailed three-dimensional flow models for the Malacca Strait have yet to be thoroughly developed, examined, and discussed, this study aims to provide a preliminary methodology for setting up a three-dimensional numerical model for this region. The analysis of the study consists of three steps: pre-processing using Blue Kenue; processing with Telemac 3D; and post-processing, which visualizes the simulation outcome. The output from the simulation is validated against published measurement data to ensure the accuracy and robustness of the numerical model. The simulation outcome reveals that the southeast part of the Malacca Strait could be a promising area for deploying tidal stream turbines due to the high tidal current velocity in that area. Additionally, it is also observed that the kinetic energy flux increases towards the southeast part of the strait due to the strait's narrow size in that area. Overall, a detailed procedure for setting up a three-dimensional flow model for the Strait of Malacca is presented, and it is hoped that this work could highlight some of the complexity involved in developing an ocean-scale model for this region

Numerical Analysis of Wake Interaction of Darrieus Tidal Turbine in Shallow Water Application

Malaysia is rich in natural resources including coal and fossil fuels. These natural resources, however, will diminish and pollute the ecosystem. Thus, researchers have proposed the use of renewable energy sources such as solar, wind, wave, and other energies as potential solutions to resolve the issue. This study focuses on tidal energy, specifically the vertical axis tidal turbine (VATT) for shallow water application. While majority of the VATT research shows that this device can work effectively in deep water, its effectiveness in shallow water has yet to be explored comprehensively. To analyse the turbine's performance, Computational Fluid Dynamics (CFD) method was applied. The Darriues turbine was used in this study since it is the ideal turbine design for shallow water in Malaysia with an average current speed of 1.0 . The Darrieus turbine model used in this project is 5 metres tall and 4.3 metres in diameter. The simulation was evaluated based on wake characteristics. The Darriues turbine was designed using the NACA0018 airfoil. Following the results of single turbine analysis, the wake has recovered to its ambience velocity at 60 metres behind the device. The wake generation due to multi-row configuration of the devices was also examined. The three-turbine configuration verifies the concept that installing two turbines side by side boosts the performance significantly. Notably, the improvement is sufficient to mitigate the adverse effects due to the turbulence wakes from upstream turbines. The findings demonstrate that by employing a staggered design (1 device upstream and 2 devices downstream), the wake can recover its initial velocity faster due to a shorter wake generation distance

Analisis putusan Mahkamah Konstitusi Nomor 49/Puu- Xx/2022 Tentang Pengujian Formil Undang-Undang Nomor 3 Tahun 2022 Tentang Ibu Kota Negara

Undang-Undang Nomor 3 Tahun 2022 tentang Ibu Kota Negara jelas bertentangan dalam pembentukannya, sebab kurang memperhitungkan efektivitas berlakunya peraturan di dalam masyarakat, seperti kurangnya partisipasi publik dan ketiadaan naskah akademik yang mampu menjelaskan alasan pembentukan suatu Undang-Undang dari segi filosofis dan sosiologis tidak mempertimbangkan berbagai aspek masyarakat Provinsi Kalimantan Timur. Adapun tujuan penelitian ini terdiri dari: 1). Mengetahui dan menganalisis pembentukan Undang-Undang No. 3 Tahun 2022 Tentang Ibu Kota Negara 2). Mengetahui dan menganalisis pertimbangan Hukum Hakim Mahkamah Konstitusi dalam putusan MK Nomor 49/PUU-XX/2022. Metodologi dalam penelitian ini menggunakan jenis pendekatan penelitian hukum yuridis normatif. Sumber data yang digunakan merupakan data sekunder dengan terdiri dari bahan hukum primer, sekunder dan tersier. Hasil penelitian ini menyimpulkan bahwa: 1). keberadaan Undang-Undang IKN dalam kedudukannya menjadi hukum positif yang menandai adanya Ibu Kota Negara yang baru. Meskipun persoalan kemudian muncul sebab IKN sendiri bukanlah merupaka wilayah provinsi, melainkan suatu daerah yang dipimpin oleh Kepala Otorita, dan ketidak jelasan Naskah Akademik yang mendorong pemohon melakukan judicial review 2). Pertimbangan Hukum Hakim Mahkamah Konstitusi dalam putusan MK Nomor 49/PUU-XX/2022 tidaklah dapat dibenarkan dalam perspektif hukum yang progresi

ANALISIS PENGUKURAN KINERJA OPERASIONAL DENGAN SMART SYSTEM PADA INDUSTRI PANEL LISTRIK

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PEMETAAN RESEARCH GROUP BERFOKUS SKALA LINGKUP SISTEM MENGGUNAKAN ANALISA CLUSTER DAN TABULASI SILANG

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