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| A study on the evaluation of the virtual surgical effect of inferior turbinectomy based on gas-solid two phase flow numerical simulation |
| Received:December 22, 2022 Revised:February 11, 2023 |
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| DOI：10.7511/jslx20221222002 |
| KeyWord:numerical simulation turbinate hypertrophy virtual surgery flow field particle |
| Author | Institution |
| 高文秀 |
南京师范大学 能源与机械工程学院, 南京 |
| 陈晓乐 |
南京师范大学 能源与机械工程学院, 南京 |
| 杨慧珍 |
南京师范大学 能源与机械工程学院, 南京 |
| 陶锋 |
东南大学附属中大医院耳鼻咽喉科, 南京 |
| 孙宝宾 |
东南大学附属中大医院耳鼻咽喉科, 南京 |
| 卢瞳 |
东南大学附属中大医院医学影像科, 南京 |
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| Abstract: |
| To evaluate the possibility of analyzing surgical outcomes by comparing different virtual surgery plans for inferior turbinate resection via numerical simulation,the real nasal model (model A) of a patient with chronic hypertrophic rhinitis was reconstructed,and the geometric structure of model A was modified by virtual surgery.model B to model D were obtained according to the resection of the lower margin,the posterior end,and both the lower margin and posterior end of the inferior turbinate,respectively.In the four airway models,simulations were performed to compare the flow distributions and particle deposition characteristics.Compared with model A,the maximum airflow velocity in the left nasal cavity and the difference of airflow velocity distributions in bilateral nasal cavity of model B and model D are both reduced.Under different flow rate conditions,the pressure drops between the inlet and outlet of model B and model D are lower than those of model A.The deposition fractions of large particles in the nasal model was significantly reduced.The deposition fractions in model B and model D are 14.5% and 14.8% lower than that in model A for 8 μm particles,respectively.For 10 μm particles,the reductions in deposition fractions in model B and model D were 14% and 14.5%,respectively.The flow distributions and particle deposition characteristics of model C are similar to those of model A.Model B and model D can better reduce the nasal airway resistance,alleviate the discomfort caused by the difference of flow distributions in bilateral nasal cavity,and reduce the deposition fractions of particle in the nasal cavity.Especially in the nasal septum,nasopharynx and throat,the particle deposition decreases obviously. |
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