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All Journal JURNAL TEKNIK MESIN Journal of Innovative and Creativity
Irawan, Irwan
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Education Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Other

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STUDI PENGARUH VARIASI KEMIRINGAN DAN KETINGGIAN STEP TERHADAP MEDAN ALIRAN MELALUI BACKWARD FACING STEP Irawan, Irwan; Rozi, Khoiri; Haryanto, Ismoyo
JURNAL TEKNIK MESIN Vol 12, No 1 (2024): VOLUME 12, NOMOR 1, JANUARI 2024
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

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Abstract

Studi ini mengkaji performa aerodinamis yang terjadi pada BFS dengan menggunakan fluida gas butena jika diterapkan variasi sudut kemiringan, tinggi langkah, dan variasi kecepatan yang berbeda. Penelitian ini menggunakan solusi numerik Computational Fluid Dynamics, dimana perangkat lunak yang digunakan adalah ANSYS 16. Model turbulensi yang digunakan dalam penelitian ini adalah k-ε realizable dengan perlakuan fungsi dinding non-equilibrium. Pengaruh perubahan tinggi dan sudut kemiringan step terhadap karakteristik aliran dipelajari dengan menggunakan kecepatan U∞ = 5; 10; dan 15 m/s. Hasil simulasi dari penelitian ini menemukan bahwa pengaruh perubahan tinggi step mempengaruhi intensitas turbulensi dan pembentukan resirkulasi. Semakin tinggi step membuat zona resirkulasi lebih besar dan jarak reattachment. Efek dari perubahan sudut kemiringan step menyebabkan pengurangan ukuran zona resirkulasi dan jarak reattachment yang lebih pendek di sisi hilir atau dekat dinding step. Peningkatan kecepatan tidak menyebabkan perubahan signifikan pada zona resirkulasi dan jarak reattachment. Namun, perubahan variasi ini menghasilkan energi kinetik turbulen yang meningkat dengan setiap peningkatan kecepatan dan koefisien gesekan dengan setiap peningkatan kecepatan.
Tinjauan Yuridis Tindak Pidana Pencemaran Nama Baik Berdasarkan Putusan Mahkamah Konstitusi Nomor 105/PUU – XXII/2024 Irawan, Irwan; Amirulloh, Amirulloh; Ibrahim, Malik; Gunawan, Andri Editia; Heriyanto, Heriyanto
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4746

Abstract

Law constitutes a set of rules that must be observed and implemented by every individual. The concept of law formation is an integral part of the broader meaning of legal policy to be implemented as a guideline for the management of the state and societal life. Law is a necessity for all components of the nation and state to create security and order, thereby providing a sense of justice. General elections (Pemilu) conducted directly by the people, from the people and for the people represent a means of realizing sovereignty for the state to produce democratic governance based on Pancasila and the Constitution of 1945. The implementation of elections conducted directly, freely, generally and secretly must be carried out honestly and fairly, capable of achieving national integration, professionalism and accountability in order to establish the position of the people as the central primary entity holding primary sovereignty. This research employs a normative juridical legal research methodology utilizing a statutory approach and a conceptual approach. The findings of this research demonstrate that the legal concept concerning elections is dependent upon legal policy that functions as a determinative activity in the pattern and formation of legislation concerning elections, which is formulated to monitor and reform such law as a determination of politics related to democracy within this state. This research aims to understand the impact of the implementation of legal policy within the electoral system conducted in the post-reform era and represents an expression of legal policy within the legal enforcement system in Indonesia.
Co-Authors Amirulloh, Amirulloh Gunawan, Andri Editia Heriyanto Heriyanto Ismoyo Haryanto Khoiri Rozi Malik Ibrahim