Turbulence Model Evaluation in Circular Pipe of Supercritical Water Based on Statistical Method
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摘要: 目前,传统湍流模型在超临界水条件的适用性评价结论还存在不确定性,本质上由于模型本身限制,这种限制表现为湍流模型具有工况依赖性。为了研究这种工况依赖性,本研究依据获得的超临界水实验数据集,采用计算流体力学的多工况自动处理技术,完成了数据集内每个实验工况的计算模拟。基于实验数据集和统计方法,对不同湍流模型对实验数据的预测性能进行分析评价,给出不同湍流模型预测性能与热工参数的影响关系。Abstract: Up to now, the traditional turbulence model evaluation in supercritical water still has some uncertainties to some degree. The basic reason is the limit of model itself which makes the model depend on the calculation parameters. This paper focuses on the turbulence model evaluation based on the batch process techniques of CFD tools through comparing with the experimental data base. Some typical turbulence models were analyzed against the experiments. The performance of each model was evaluated based on the statistical method. The dependencies of the performance on operation conditions were discussed.
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Key words:
- Supercritical Water /
- Turbulence model /
- Statistical evaluation
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