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Large Eddy Simulation and Experimental Measurements of a Methane-Air Fire Plume

机译:甲烷-空气火羽的大涡模拟和实验测量

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摘要

Measurements of a large, 1-m in diameter, turbulent buoyant methane-air fire plume are taken and compared to results from nunerical simulation using Large Eddy Simulation (LES). The experiments are carried out in Sandia's FLAME (Fire laboratory for Accreditation of Models and Experiments) facility and consist of a low velocity (0.12 m/sec) methane plume emitting upwards into ambient air. Numerical results abow evidence of strong entrainment velocities resulting in flame pinch off near the base of the plume. Preliminary comparisons of the LES results to experimental measurements abow good qualitative agreement to mean stream-wise and cross-stream velocities.
机译:进行了直径为1 m的大型湍动浮力甲烷空气火羽的测量,并将其与使用大涡模拟(LES)进行的数值模拟结果进行了比较。实验是在桑迪亚(Sandia)的FLAME(模型和实验鉴定的消防实验室)设施中进行的,由低速(0.12 m / sec)的甲烷羽流向上排放到周围的空气中组成。数值结果表明强烈的夹带速度导致火焰在烟羽底部附近被夹住。 LES结果与实验测量值的初步比较,表明在流向和跨流速度方面具有良好的定性一致性。

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