Objective

The aim of our study was to investigate how well Particle Image Velocimetry (PIV) measurements could serve Computational Fluid Dynamics (CFD) model validation for nasal airflow.

Material and methods

: For the PIV measurements, a silicone model of the nose based on cone beam computed tomography (CBCT) scans of a patient was made. Corresponding CFD calculations were conducted with laminar and two turbulent models (k-ω and k-ω SST).

Results

CFD and PIV results corresponded well in our study. Especially, the correspondence of CFD calculations between the laminar and turbulent models was found to be even stronger. When comparing CFD with PIV, we found that the results were most convergent in the wider parts of the nasal cavities.

Conclusion

PIV measurements in realistically modelled nasal cavities succeed acceptably and CFD calculations produce corresponding results with PIV measurements. Greater model scaling is, however, necessary for better validations with PIV and comparisons of competing CFD models.

中文翻译：

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从鼻腔 CBCT 扫描验证 CFD 模型的 PIV 性能评估。

客观的

我们研究的目的是调查粒子图像测速 (PIV) 测量如何为鼻气流的计算流体动力学 (CFD) 模型验证服务。

材料与方法

：对于 PIV 测量，根据患者的锥形束计算机断层扫描 (CBCT) 扫描制作了鼻子的硅胶模型。使用层流和两个湍流模型（k-ω 和 k-ω SST）进行相应的 CFD 计算。

结果

CFD 和 PIV 结果在我们的研究中很好地对应。特别是，发现层流模型和湍流模型之间的 CFD 计算的对应性更强。在比较 CFD 与 PIV 时，我们发现结果在鼻腔较宽的部分最收敛。

结论

在真实建模的鼻腔中的 PIV 测量取得了可接受的成功，并且 CFD 计算产生了与 PIV 测量相应的结果。然而，更大的模型缩放对于使用 PIV 进行更好的验证和竞争 CFD 模型的比较是必要的。