Work

Simulation and Experimental Study on Parameters of High-Frequency Acoustic Waves Affecting Kitchen Oil Fires

Year: 2026

Type: article

Abstract: This study systematically investigates the influence of sound waves on the flame morphology of oil pan fires in commercial kitchen fire scenarios through a combined approach of numerical simulation and experimental research. A two-dimensional numerical model was established using COMSOL Multiphysics to simulate the interaction mechanisms with flames under various sound source configurations, frequencies, and sound pressure levels. An experimental platform was then constructed to validate and refine the findings using flame morphology, center temperature, and combustion duration as metrics. Results confirm that sound waves effectively destabilize flames, with suppression effects exhibiting a nonlinear trend of initial enhancement followed by attenuation as frequency increases. At the optimal frequency, increasing sound pressure level significantly enhances suppression but exhibits saturation characteristics. Bilateral oblique sound sources simultaneously act on both sides of the flame root, synchronously thinning the boundary layer to create uniform suppression. This configuration also compensates for deflection effects at high frequencies in single-field scenarios, yielding higher efficiency. The determined optimal parameter combination is 1800 Hz and 50 dB, with bilateral oblique arrangement preferred.

Source: Fire

DOI: 10.3390/fire9060226

Authors: Wenyue Ge, Zhaojun Tian

Institutions: Hunan University of Science and Technology, Xinjiang Production and Construction Corps, Xinjiang University of Technology

Language: English

Topic: Fire dynamics and safety research

Subfield: Safety, Risk, Reliability and Quality

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: National Natural Science Foundation of China