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An Nizhami, Avicenna
Politeknik Negeri Semarang
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Journal : Journal of Mechanical Engineering and Applied Technology

 1 
Mass Ratio Influence on Vortex-Induced Vibration of a Flexible Cylinder using Large Eddy Simulation at Re=1000 An-Nizhami, Avicenna; Apriandi, Nanang; Setiawan, Trio; Kristiawan, Timotius Anggit; Riadini, Elfrida Rizky; Janitra, Atikah Ayu; Yanuar, Padang
Journal of Mechanical Engineering and Applied Technology Vol. 2 No. 1 (2024): VOLUME 2 ISSUE 1 YEAR 2024 (MARCH 2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v2i1.5498

Abstract

The study investigates the phenomenon of vortex-induced vibration (VIV) using Large Eddy Simulation (LES) at a Reynolds number of 1000, focusing on transitional flow conditions. LES has proven effective in understanding VIV across Reynolds number regimes, aiding in comprehending flow physics and mechanisms behind VIV. The research aims to contribute data for validating numerical models and informing engineering practices. The study employs the Navier-Stokes equation and the continuity equation to analyze fluid flow, treating it as incompressible due to negligible density changes. The three-dimensional incompressible momentum equation is discretized using the finite volume method within the spatial domain. Resolution of the pressure Poisson equation ensures compliance with free divergence conditions, enhancing computational fluid dynamics simulations' reliability. Validation of the fluid flow solver involves comparing computed drag force coefficients with established benchmarks, showing agreement within small discrepancies. The study delves into vibration behavior induced by cross flow at various reduced velocities (), noting distinct patterns ranging from irregularities at low  to quasi-periodic behavior at higher values. Analysis of maximum cylinder displacement () across different reduced velocities and mass ratios underscores the complex relationship between system parameters and displacement dynamics. A consistent occurrence of y_max at a specific reduced velocity highlights its significance, while varying mass ratios affect displacement patterns, indicating the importance of understanding these dynamics for optimizing fluid-structure interaction systems.
STRUCTURAL INTEGRITY ASSESSMENT OF LPG-FIRED CABINET DRYER USING FINITE ELEMENT ANALYSIS (FEA) Nafisah Amalia; Yusi Amalia Renaningtyas; Apriandi MS, Nanang; Yusuf Dewantoro Herlambang; Avicenna An-Nizhami; Padang Yanuar; Aris Fiatno
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 2 (2025): VOLUME 3 ISSUE 2 YEAR 2025 (JULY 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i2.6635

Abstract

Cabinet-type dryers powered by Liquefied Petroleum Gas (LPG) are widely recognized as an efficient drying solution, particularly for small and medium-sized industries. However, the structural strength and durability aspects of these dryers often receive insufficient attention, although they operate under a combination of static and thermal loads that may potentially trigger structural failure. This study aims to evaluate the structural strength of a cabinet-type LPG dryer using the Finite Element Analysis (FEA) method by considering variations in operating temperature and constant mechanical loading. Simulations were conducted within an operating temperature range of 48.049°C to 75.767°C under a constant load of 40 kg. The key parameters analyzed include total deformation, stress distribution, and structural safety factor. The results revealed a maximum deformation of 1.094 mm and a peak stress of 1030.7 MPa concentrated in the plenum chamber area, identified as a critical zone due to the combined effects of thermal and mechanical loading. The maximum safety factor reached 15, while the minimum value of 0.24255 indicates the need for localized design improvements in certain regions. These findings demonstrate the effectiveness of FEA in predicting the structural response of drying equipment and provide a scientific foundation for enhancing structural safety and reliability. Further studies are recommended to integrate coupled thermal-structural analysis and experimental validation to improve the accuracy of the results. Keywords: cabinet dryer; finite element analysis (FEA); safety factor; structural analysis; temperature distribution
Co-Authors Agus Pramono Aminuyati Amran Yobioktabera Antoro, Daffa Yudha Akbar Putra Apriandi MS, Nanang Apriandi, Nanang Apriandi Aris Fiatno Aulia, Nur Fatowil Ayu Fitrianti Sugiono, Friska A’tohillah, Muhammad Khusnul Bambang Sumiyarso Bono Bono Budhi Prasetiyo Dwiana Hendrawati Elfrida Rizky Riadini F. Gatot Sumarno, F. Gatot Ghozali, Hanif Faizal Hartono Hartono Hery Tristijanto Huda, Muhamad Nurul I Made Sudana I Nyoman Gede Baliarta Janitra, Atikah Ayu Khoiri Rozi Khoirunnisa, Hilma Kholifah, Nevita Nur Khoryanton, Ampala Khusna, Atina Nurul Lathief, Muttabik Fathul Luthfiana, Nadia Tasya Ayu Made Ery Arsana Marliyati Marliyati, Marliyati Mulyono Mulyono Nafisah Amalia Nanang Apriandi Nanang Budi Sriyanto Naufal Mudriya, Aldo Negara, Komang Metty Trisna Nurhidayati Nurhidayati Padang Yanuar Padang Yanuar Pambudi, Yoyok Dwi Setyo Prakoso, Raden Gumilang Aji Purnomo, Adhy Rachman, Iqo Yovie Rani Raharjanti Riles Melvy Wattimena Riles WM Rizky Riadini, Elfrida Sai'in, Ali Setiawan, Trio Setyawan, Martando Robby Setyowati, Nur Slamet Priyoatmojo, Slamet Sudirman Sugeng Irianto Sugiono, Friska Ayu Fitrianti Suharto Suharto Suseno, Sigit Suwarti Suwarti Syukur Alfauzi, Abdul Tengku Riza Zarzani N Timotius Anggit Kristiawan Trio Setiyawan Ulum, Showi Nailul Wahyono Wahyono Wahyu Isti Nugroho Widodo, Ignatius Gunawan Wiwik Purwati Widyaningsih yatimah, Dhurotul Yusi Amalia Renaningtyas Yusuf Dewantoro Herlambang