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All Journal Komunikasi Fisika Indonesia Jurnal SOLMA JMM (Jurnal Masyarakat Mandiri) Contagion: Scientific Periodical Journal of Public Health and Coastal Health JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Journal of Bioprocess Chemical and Environmental Engineering Science Jurnal Abdi Masyarakat Indonesia Jurnal Pengabdian Masyarakat Waradin Journal of Engineering Science and Technology Management Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Alltop Amri Ya Habib
Departemen Teknik Kimia, Universitas Riau
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Dynamic Modeling and Nyquist Stability Analysis of a Non-Interacting Two-Tank Series Thermal System Yogi Yolanda; Yola Bertilsya Hendri; Salma Liska; Lisa Legawati; Suhendri Suhendri; Alltop Amri Ya Habib; Zulfansyah Zulfansyah
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 2 (2026): June 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i2.431

Abstract

Series tank systems are vital in chemical industries but susceptible to mass and thermal disturbances, making stability analysis essential. This study models the level and temperature dynamics of a non-interacting two-tank system equipped with a heater in Tank-01, analyzing its stability via Nyquist plots. The methodology involves laboratory step-response experiments validated against mathematical models derived using Laplace Transforms and Explicit Euler methods. Results demonstrate the model closely matches experimental data; Tank-01 exhibits first-order characteristics, while Tank-02 functions as a second-order system. The physical system successfully handled +52% and -35% step disturbances within liquid height limits of 3–24 cm and feed flow rates of 40.33–136.5 cm³/s. Furthermore, Nyquist analysis confirms the open-loop thermal process is inherently stable across all tested capacities. Maximum level and thermal process gains were 0.3787 and 0.0062, respectively. Ultimately, this study confirms the non-interacting two-tank system possesses stable, self-regulating characteristics against load disturbances within operational limits.
Co-Authors Ahmad Fadli Ahmad Fadli Aidil Akbar Alfarisi, Cory Dian Apriliani, Elisa Ariya Eka Alel Arnif, Iqbal Asnika Putri Simanjuntak Dedi Mulyadi Dhini Aiyulie Novri Dian Rakhmad Ferdy Ashari Syawal Hari Rionaldo Hendri, Yola Bertilsya Idral Amri Julita, Julita Lisa Legawati Lisa Legawati M. Joehari Jamili Muhammad Solih Nasution Mutamima, Anisa Nirwana Nirwana Nita Andrini Nurfatihayati Panca Setia Utama Rahmanita Sinaga Ririn Puji Hastuti Rizki Oktavian Salma Liska Salma Liska Simanjuntak, Asnika Putri Sofyan Andri Suhendri Suhendri Suhendri Sunarno Sunarno Sunarno Sunarno Syamsu Herman Tengku Emrinaldi Yelmida Azis Yogi Yolanda Yola Bertilsya Hendri Yolanda, Yogi Yunandra Zulfansyah Zulfansyah Zulfansyah Zulfansyah Zuqni Meldha