为了确定Vreman亚格子模型对于有侧开缝的竖通道内旋转火焰热流场模拟的适用性，基于一竖通道内旋转火焰实验场景，分别使用基于Smagorinsky和Vreman亚格子模型的大涡模拟技术进行了模拟。通过对所得结果比较确定基于Smagorinsky亚格子模型的大涡模拟技术可以得到与实验吻合的火焰状态，而使用Vreman亚格子模型会在一定程度上低估旋转火焰周围的粘性耗散，从而过高地估计旋转火焰周围的切向速度，使火焰不能保持相对稳定的旋转状态。%In order to determine the suitability of the Vreman subgrid⁃scale model for the fire whirls flow field in a vertical shaft with a side slit, numerical simulations by Large Eddy Simulation ( LES) were conducted according to use cases based on the Smagorinsky and Vreman subgrid⁃scale models. The comparison results illustrated that the flame state obtained by using the LES technology based on the Smagorinsky subgrid⁃scale model was in alignment with the experiment. However, numerical simulation results based on the Vreman subgrid⁃scale model underestima⁃ted viscous dissipation near the flame to some extent. Consequently, overestimating the tangential velocity near the fire whirls prevents fire whirls from remaining in a stable state.
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