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介绍重气泄漏扩散试验(包括全规模大型现场试验和实验室模拟试验)的研究进展。全规模大型现场试验的试验场景与真实场景一致,通过现场试验得到的数据可靠且可以观察到一些独特的试验现象。实验室模拟分为水槽模拟和风洞模拟,其中水槽模拟的可视化效果好,直观性很强。当水槽模拟采用盐水时,盐水流动速度小于重气,易获得其涡旋结构照片,而且试验在液体内部进行,无毒性或腐蚀性,比较安全。风洞试验和水槽模拟都不需要花费大量财力、物力且结果可靠,为数值模拟提供了数据。本文通过分析重气试验的研究现状,指出了风洞试验的研究方向。
The research progress of heavy gas leakage diffusion test (including large-scale full-scale field test and laboratory simulation test) is introduced. The test scenario for a full-scale, large-scale field test is consistent with the real scenario and the data obtained from the field tests are reliable and some unique test phenomena can be observed. Laboratory simulation is divided into tank simulation and wind tunnel simulation, in which the visualization effect of tank simulation is good and intuitive. When the sink is simulated with salt water, the brine flows at a rate less than that of the heavy gas, making it easy to obtain photos of its swirling structure. The test is carried out inside the liquid and is non-toxic or corrosive and safer. Wind tunnel test and sink simulation do not need to spend a lot of financial and material resources and the results are reliable, providing data for numerical simulation. This paper points out the research direction of wind tunnel test by analyzing the research status of heavy gas test.