Related Experiment Video
Updated: Jun 23, 2026

Design and Optimization Strategies of a High-Performance Vented Box
Published on: June 9, 2023
Using Large Eddy Simulation for understanding vented gas explosions in the presence of obstacles
Valeria Di Sarli1, Almerinda Di Benedetto, Gennaro Russo
1Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche, 80124 Naples, Italy. valeria.disarli@irc.cnr.it
Abstract:
In this work, a validated Large Eddy Simulation model of unsteady premixed flame propagation is used to study the phenomenology underlying vented gas explosions in the presence of obstacles. Computations are run of deflagrating flames in a small-scale combustion chamber closed at the bottom end and open at the opposite face. A single obstacle is centred inside the chamber. Methane-air mixtures of various compositions (ranging from lean to stoichiometric and rich), and obstacles with different area blockage ratios (30, 50 and 70%) and shapes (circular, rectangular and square cross-section in the flow direction) are investigated. All cases are initialized from stagnation. The competition between combustion rate and venting rate allows explaining both number and intensity of the overpressure peaks observed.
Related Concept Videos
Turbulent Flow: Problem Solving
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Laminar Flow: Problem Solving
Escape Velocities of Gases
Physical Principles Governing Gas Exchange
Gas Laws Governing Respiration
The behavior of gases is guided by Dalton's Law of partial pressures and Henry's Law.
Dalton's Law asserts that the total pressure exerted by...
Laminar and Turbulent Flow
Turbulent Flow
