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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >CFD MODELING AND COMPARISON WITH DATA FROM THE NIST REFERENCE SPRAY COMBUSTOR
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CFD MODELING AND COMPARISON WITH DATA FROM THE NIST REFERENCE SPRAY COMBUSTOR

机译：CFD建模并与NIST参考喷雾燃烧室的数据进行比较

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摘要

Validation of computational fluid dynamics (CFD) predictions for spray combustion application has been a challenging task due to difficulties in both modeling and experimental measurements. However, validation is considered to be an essential exercise for the success of CFD tools in the development of future combustion systems. This paper describes a benchmark spray combustion database collected at National Institute of Standards and Technology (NIST) and validation of a commercial CFD code using these data. Swirl-stabilized combustion of methanol at lean operating conditions in the NIST reference spray combustor facility was selected to be the baseline case for which both measurements and predictions were made. A comparison is presented of CFD predictions with experimental data for droplet size and velocity, and spray volume flux. The agreement between the CFD calculations and the experimental data is generally good once certain adjustments were made to the measured data close to the injector tip. The adjustments were made based on extrapolation from more accurate downstream measurements. Specification of droplet initial conditions for computational modeling that accurately reflect the laboratory conditions remains a significant issue that needs further improvement.
机译：由于建模和实验测量均存在困难，验证喷雾燃烧应用的计算流体动力学（CFD）预测已成为一项艰巨的任务。但是，在将来的燃烧系统的开发中，验证被认为是CFD工具成功的重要手段。本文介绍了从美国国家标准技术研究院（NIST）收集的基准喷雾燃烧数据库，并使用这些数据验证了商业CFD代码。在NIST参考喷雾燃烧器设备中，在稀薄运行条件下，涡旋稳定燃烧的甲醇被选择为进行测量和预测的基准情况。比较了CFD预测值与液滴大小和速度以及喷雾量通量的实验数据。一旦对靠近喷油嘴尖端的测量数据进行了某些调整，CFD计算与实验数据之间的一致性通常很好。调整是基于更准确的下游测量值进行的推断。精确反映实验室条件的用于计算建模的液滴初始条件的规范仍然是一个重要的问题，需要进一步改进。

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