Abstract In an attempt to make a step forward towards predictive fire modelling, the application of turbulence modelling approaches, calculating the sub-grid scale viscosity, kinetic energy, turbulent Prandtl and Schmidt numbers based on a dynamic procedure, has been tested on a wide range of pool fire scenarios (i.e., MaCFP workshop test cases). Through the use of Large Eddy Simulations, it is investigated whether the applied modelling approaches can accurately predict the pool fire dynamics on different grid sizes and result in improved predictions compared to models using constant parameters. Additionally, it is evaluated whether the theoretical constants related to turbulence modelling, derived from isotropic decaying turbulence scenarios, are justified in turbulent buoyant flows.

中文翻译：

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动态湍流建模在火灾应用中的应用

摘要 为了向预测火灾建模迈出一步，湍流建模方法的应用，基于动态程序计算亚网格尺度的粘度、动能、湍流 Prandtl 和 Schmidt 数，已经在广泛的范围内进行了测试。池火灾场景（即 MaCFP 车间测试用例）。通过使用大涡模拟，研究了所应用的建模方法是否可以准确预测不同网格尺寸上的水池火灾动力学，并与使用恒定参数的模型相比提高预测效果。此外，评估了与湍流建模相关的理论常数（源自各向同性衰减湍流场景）在湍流浮力流中是否合理。