Visualization of the decompression of supercritical carbon dioxide

超临界二氧化碳减压的可视化

• 批准号: 513903-2017
• 负责人: Johansen, Craig
• 金额: $ 1.82万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640635
• 关键词: Visualization; decompression; supercritical; carbon; dioxide

This work aims to visualize the rapid decompression of supercritical carbon dioxide (CO2) in a channel. Further understanding of CO2 decompression is critical for the mitigation of long, ductile fractures associated with high-pressure CO2 pipelines. An existing shock tube facility in the lab will be modified to accommodate the proposed CO2 decompression tests. A high-speed schlieren photography system, using a Photron SA5 camera, will be used to photograph the event. Framing rates between 50-100 kHz are planned. High-speed piezoelectric sensors will be used to monitor gas pressure along the expansion tube upper wall surface. These sensors will provide key information on the decompression event. They will also be used to track expansion waves traveling upstream and help determine when the data acquisition period should be terminated. The experiments will provide key data needed to validate numerical models used to predict CO2 pipeline fracture events.

这项工作旨在可视化通道中超临界二氧化碳 (CO2) 的快速减压。进一步了解二氧化碳减压对于缓解与高压二氧化碳管道相关的长延性断裂至关重要。实验室现有的激波管设施将进行改造，以适应拟议的二氧化碳减压测试。使用 Photron SA5 相机的高速纹影摄影系统将用于拍摄该活动。计划帧速率在 50-100 kHz 之间。高速压电传感器将用于监测沿膨胀管上壁表面的气压。这些传感器将提供有关减压事件的关键信息。它们还将用于跟踪向上游传播的膨胀波，并帮助确定何时应终止数据采集周期。这些实验将提供验证用于预测二氧化碳管道破裂事件的数值模型所需的关键数据。