The safety process and effectiveness of in situ burning (ISB) method dealing with spilling liquids depend on flame morphology, mass burning rate and flame radiation. In this work, eight rectangular pools with a fixed area of 400 cm² but different aspect ratios (length–width ratio, n = 1, 2, 4, 6, 8, 10, 12, and 16, respectively) are used. As the aspect ratio increases from n = 1 to n = 16, the flame height decreases from 105.6 to 72.9 cm, whereas the incident heat flux increases from 0.283 to 0.562 kW/m². The mass burning rate decreases initially at n ≤ 6 and increases afterwards at n > 6. The traditional flame radiation model overestimates experimental measurement because the radiation model assumes that the flame surface is rectangular, but the actual flame shape shows a trapezoidal surface due to air entrainment. The mathematical linear interpolation method is proposed to make an improvement of rectangular radiation model. The new-proposed flame radiation model is validated by experimental measurements with the relative error < 5%. The current work provides a good method to evaluate the magnitude of loss prevention of oil leakage.

中文翻译：

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矩形庚烷池火火焰形态及改进火焰辐射模型的实验研究

处理溢出液体的原位燃烧 (ISB) 方法的安全过程和有效性取决于火焰形态、质量燃烧速率和火焰辐射。在这项工作中，使用了 8 个固定面积为 400 cm ²但纵横比不同（长宽比，n  = 1、2、4、6、8、10、12 和 16）的矩形池。随着纵横比从n  = 1 增加到n  = 16，火焰高度从 105.6 减小到 72.9 cm，而入射热通量从 0.283 增加到 0.562 kW/m ²。质量燃烧速率最初在n  ≤ 6 时降低，然后在n时增加 > 6. 传统的火焰辐射模型高估了实验测量，因为辐射模型假设火焰表面为矩形，但实际火焰形状由于夹带空气而呈现梯形表面。提出数学线性插值法对矩形辐射模型进行改进。新提出的火焰辐射模型通过实验测量得到验证，相对误差<5%。目前的工作为评估漏油损失预防程度提供了一种很好的方法。