Numerical Modeling and Experimental Validation of Thermal Distribution in a Prototype Snakehead Fish (Channa striata) Extraction Chamber with Dual-Heater Configuration

Izhary Siregar; Ahmad Jibril; Setyawan Dwi Nugroho; Agus Purwanto

doi:10.31572/inotera.Vol11.Iss1.2026.ID610

Izhary Siregar Polytechnic of Marine and Fisheries Sidoarjo
Ahmad Jibril Polytechnic of Marine and Fisheries Sidoarjo
Setyawan Dwi Nugroho Polytechnic of Marine and Fisheries Sidoarjo
Agus Purwanto Polytechnic of Marine and Fisheries Sidoarjo

DOI: https://doi.org/10.31572/inotera.Vol11.Iss1.2026.ID610

Keywords: Channa striata, Computational Fluid Dynamics (CFD), Dual-Heater Configuration, Thermal Distribution, Extraction Yield

Abstract

This study evaluates the thermal performance and extraction capacity of a developed steaming chamber utilizing a dual-heater configuration (2 x 200 W). A two-stage methodology was implemented: first, a numerical characterization using Computational Fluid Dynamics (CFD) to simulate convective heat distribution and fluid flow patterns; and second, an experimental validation using a physical prototype. The CFD results revealed a convection-dominated thermal field with a maximum wall temperature of 63.52°C and a center temperature of 55.22°C, maintaining a low thermal gradient of approximately 8.3°C. This uniformity ensured that fish samples remained at a stable exposure temperature of roughly 60°C during the initial heating phase. Experimental trials were conducted across a temperature range of 40–110°C and durations of 60–180 minutes. The results identified an optimal operating window between 80°C and 90°C for 120 minutes, yielding a peak extraction volume of 46.4 mL. Data trends indicated that while thermal energy is essential for liberating albumin from the tissue matrix, temperatures exceeding 100°C lead to a progressive decline in yield due to fluid evaporation and potential thermal degradation. Conversely, temperatures below 70°C proved insufficient for effective extraction. Qualitative chromatic analysis confirmed that the optimal 80–90°C range produced the most concentrated and opaque extracts.. The integration of CFD-based design and automated thermal control successfully demonstrates a robust framework for maximizing the recovery of thermosensitive fish essences in extraction chamber.

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