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All Journal VANOS Journal of Mechanical Engineering Education Journal of Renewable Energy and Mechanics Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia Advance Sustainable Science, Engineering and Technology (ASSET)
Nu Rhahida Arini
Politeknik Elektronika Negeri Surabaya
Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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The Development of an Application to Design a Solar Updraft Tower Power Plant and to Estimate its Power Generation Moch. Faqih; Nu Rhahida Arini
VANOS Journal of Mechanical Engineering Education Vol 7, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/vanos.v7i1.13170

Abstract

A solar thermal converter is an alternative device to optimize the generation of electricity. One implementation of it is Solar Updraft Tower (SUT) which has some advantages such as easy installation, zero-emission, and long-life investment. This paper aims to describe a method to design the process of a SUT power plant which can be used to predict the expected mechanical power output. The application is built using an open-source computation software, GNU Octave, to produce an interactive user interface. In this paper, data is collected experimentally from SUT prototype in laboratory scale. The operational data is processed using the proposed application to analyze the effect of the variation of inlet diameter on mechanical power output. From the result, the power output increases along with the increasing inlet diameter. The highest power output is produced by a SUT diameter of 0.165 m. This study contributes to increasing the development of renewable energy technology of solar thermal power plants. 
Analysis of Fluid Flow Characteristics Across the Darrieus Turbine in Irrigation Channels: ANALISA KARAKTERISTIK ALIRAN FLUIDA MELINTASI TURBIN DARRIEUS PADA SALURAN IRIGASI Joke Pratilastiarso; Lohdy Diana; Nu Rhahida Arini; Faris Hilmi Kurniawan; Firdaus Fhudoli Putra
Journal of Renewable Energy and Mechanics Vol. 6 No. 01 (2023): REM VOL 6 NO 01 2023
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2023.10905

Abstract

This study simulated the characteristics of the fluid flow that passes through the Darrieus turbine before installation and testing were carried out. The purpose of knowing the flow characteristics can determine the profile and position of the maximum speed so that the design and placement of the turbine can be improved. The research method was carried out using dynamic fluid computational simulations in three-dimensional form with steady state conditions, discretization using second-order, with convergent conditions when it reached 10-6. The simulation results show that the position of the flow above the turbine had the lowest value because the fluid flowed relatively without disturbance which caused the velocity to had a value almost the same as the incoming fluid velocity. The fluid velocity increased when it was in line 2 and line 3 or across the turbine. This was due to the turbulence generated by the rotation of the turbine. While the speed on line 4 or below the turbine had a lower value than line 2 and line 3. This was due to the position below the turbine so that the turbine rotation did not have an impact on speed. At the four line positions the velocity increased at Y=0.7 m or when the fluid hits the turbine. This increase in fluid velocity was expected to turn the turbine. The results also included the flow distribution in the form of a streamline in several positions where the flow that was in contact with the channel wall had a low velocity value due to friction with the wall.
ANN-Based Mechanical Property Prediction of Bio-Fibre for Wind Turbine Blade Materials with FEM Validation Siaga Whiky Setia; Nu Rhahida Arini; Bima Sena Bayu Dewantara
Advance Sustainable Science Engineering and Technology Vol. 8 No. 1 (2026): November - January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i1.2482

Abstract

The increasing demand for renewable energy highlights the need for sustainable materials in wind turbine blade design. Conventional fiberglass blades, while effective, present environmental and disposal challenges, motivating the exploration of bio-composites as greener alternatives. This study aims to develop and validate an integrated framework that combines experimental validation, Finite Element Method (FEM) pre-screening, Artificial Neural Networks (ANN), and Rule of Mixtures (RoM) validation to evaluate the feasibility of bio-fibre wind turbine blades Mechanical properties of flax, hemp, sisal, jute, pineapple fiber, and resin are obtained from previously published experimental studies available in the literature, with resin content fixed at 90% and permutations generated for ANN training. Experimental tensile testing on a 90% resin–10% pineapple fiber composite yields 131 MPa, closely matching the permutation prediction of 118.6 MPa, confirming dataset reliability. FEM simulations are then employed to pre-screen potential maximum performance values within the dataset range, ensuring the physical feasibility of ANN input properties. Using these validated inputs, the ANN predicts feasible bio-composite compositions, which are further compared against RoM estimations. The results show that ANN predictions remain within a 7% deviation from RoM values, demonstrating consistency with micromechanical theory. This integrated framework highlights that FEM-based input screening enhances ANN prediction reliability, and pineapple-based bio-composites can serve as sustainable and technically viable alternatives for wind turbine blade applications.
IMPLEMENTASI KALIBRASI OTOMATIS PADA WATER QUALITY METER UNTUK PEMBELAJARAN MONITORING KUALITAS AIR DI PKP SIDOARJO Arna Fariza; Teguh Hady Ariwibowo; Agus Indra Gunawan; Setiawardhana Setiawardhana; Nu Rhahida Arini; Maulana Bintang Irfansyah; Ahmad Harun; Santi Santi; Nurmala Asifatu Zahro; Rahmat Maghrobi Alwafi; Ainul Muhlasin; Zaky Wahyu Oktavianto; Naufal Pandu; Naufal Nafi' Nusantoro; Muhammad Irfan Tam Tomo
Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia. Vol 5, No 1 (2026): Maret 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat - Universitas Teknologi Digital Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26798/jpm.v5i1.2341

Abstract

Kualitas air merupakan faktor utama yang menentukan keberhasilan kegiatan budidaya dan pembelajaran praktikum di bidang akuakultur. Politeknik Kelautan dan Perikanan (PKP) Sidoarjo sebagai institusi pendidikan vokasi membutuhkan perangkat monitoring yang akurat, mudah digunakan, dan relevan untuk mendukung kegiatan praktikum mahasiswa. Kegiatan pengabdian masyarakat ini bertujuan untuk mengimplementasikan modul Water Quality Meter (WQM) yang telah dilengkapi sistem kalibrasi otomatis berbasis Recursive Error Correction (REC) sebagai upaya meningkatkan akurasi pengukuran parameter kualitas air, meliputi pH, suhu, dan salinitas. Metode pelaksanaan terdiri dari tahap perencanaan, persiapan, pelatihan, demonstrasi, serta evaluasi penggunaan alat di fasilitas kolam uji PKP Sidoarjo. Hasil kegiatan menunjukkan bahwa modul WQM 2025 mampu memberikan pembacaan sensor yang stabil dan konsisten ketika digunakan dalam sesi praktik lapangan. Integrasi sistem REC terbukti meningkatkan ketepatan hasil pengukuran tanpa memerlukan proses kalibrasi manual yang kompleks. Peserta kegiatan memperoleh peningkatan pemahaman mengenai pemantauan kualitas air berbasis IoT serta mampu mengoperasikan alat dan platform monitoring secara mandiri. Program ini juga membuka peluang kolaborasi berkelanjutan dalam pengembangan teknologi terapan untuk pendidikan vokasi kelautan dan perikanan
Co-Authors Agus Indra Gunawan Ahmad Harun Ainul Muhlasin Arna Fariza Bima Sena Bayu Dewantara Faris Hilmi Kurniawan Firdaus Fhudoli Putra Joke Pratilastiarso Lohdy Diana Maulana Bintang Irfansyah Moch. Faqih Muhammad Irfan Tam Tomo Naufal Nafi' Nusantoro Naufal Pandu Nurmala Asifatu Zahro Rahmat Maghrobi Alwafi Santi santi Setiawardhana Setiawardhana Siaga Whiky Setia Teguh Hady Ariwibowo Zaky Wahyu Oktavianto