Anew and simple model for sizing surge vessels on pumping mains has been developed. The Monte Carlo Simulation (MCS) is utilized to generate 2000 realizations for various cases of up- and down-surges. Approximate models are developed for the prediction of the initial and the expanded vessel’s gas volume. The developed models outperformed the existing design charts; yielding better scores in various statistical indicators, e.g. a high coefficient of determination of 0.94 and four orders of magnitude less error. The vessel’s initial gas volume is found to be affected mostly by the pipe diameter and static head, while the expanded gas volume depends on the initial gas volume and the static head. The error analysis revealed that the predicted models had a low error band of $+/-$0.36 compared to $+/-$0.78 for previous design charts. These developed approximate models can serve as a basis for preliminary surge protection size selection during feasibility study phases.

已经开发了一种新的简单模型，用于在抽水干线上确定浪涌容器的尺寸。蒙特卡罗模拟（MCS）用于为各种高潮和低潮情况生成2000个实现。开发了近似模型来预测初始和扩展容器的气体量。开发的模型优于现有的设计图表；在各种统计指标中产生更好的分数，例如0.94的高确定系数和更少的四个数量级的误差。发现容器的初始气体量主要受管道直径和静压头的影响，而膨胀的气体量取决于初始气体量和静压头。误差分析表明，预测模型具有较低的误差带$+/-$相较于0.36 $+/-$以前的设计图表为0.78。这些开发的近似模型可以作为可行性研究阶段中初步电涌保护尺寸选择的基础。