In this paper, the experimental validation of an innovative CFD approach, called SBAM (“Source Box Accidental Model”), is described. SBAM was developed in ANSYS Fluent and is aimed at a more efficient characterisation of accidental high-pressure gas releases in congested plants.

The experimental setup, methodology and a preliminary CFD-experimental data comparison are described.

The validation campaign has been carried out in the SEASTAR-WT wind tunnel, realized at the Environment Park in Turin (Italy). A 1:10 scaled Oil & Gas platform mockup, equipped with flow and gas concentration sensors, was built and installed inside the wind tunnel, in order to reproduce an accidental gaseous release in dynamic similarity conditions with the real cases. A set of gas releases were performed, and the predicted concentrations were compared to the observed ones in order to validate the CFD model.

Several statistical measures with their range of acceptability allowed to compare the two sets of data. Results showed that, in most of the cases, acceptance criteria were met and a good consistency between experimental and numerical values is found. Furthermore, an overestimating tendency of SBAM is observed, suggesting that it is a conservative tool for consequences estimation.

在本文中，描述了一种称为 SBAM（“Source Box Accidental Model”）的创新 CFD 方法的实验验证。SBAM 是在 ANSYS Fluent 中开发的，旨在更有效地表征拥挤工厂中的意外高压气体泄漏。

描述了实验设置、方法和初步 CFD 实验数据比较。

验证活动已在 SEASTAR-WT 风洞中进行，该风洞是在都灵（意大利）环境公园实现的。在风洞内建造并安装了一个 1:10 比例的石油和天然气平台模型，配备了流量和气体浓度传感器，以便在与真实案例相似的动态条件下重现意外气体释放。执行一组气体释放，并将预测浓度与观察到的浓度进行比较，以验证 CFD 模型。

一些具有可接受范围的统计测量允许比较两组数据。结果表明，在大多数情况下，符合验收标准，并且发现实验值和数值之间具有良好的一致性。此外，观察到 SBAM 的高估趋势，表明它是一种保守的后果估计工具。