计算机流体力学在模拟下鼻甲手术中的应用

发布时间：2018-06-29 01:21

  本文选题：计算机流体力学 + 下鼻甲　； 参考：《临床耳鼻咽喉头颈外科杂志》2017年04期

【摘要】：目的:建立模拟两种下鼻甲切除术式的计算机流体力学即CFD模型,分析其对鼻腔流体力学的影响。方法:建立单侧下鼻甲肥大鼻腔的CFD模型A,在此基础上模拟下鼻甲切除术分别建立B、C两种术后模型,运用流体分析软件Fluent6.3.26计算三种模型的鼻腔全流场数据。结果:B模型患侧鼻腔面积较原始模型平均面积增大0.36cm2,C模型增大0.89cm2;B模型患侧鼻腔的压降差(约8Pa)与原始模型相比无太大改变,C模型压降差明显降低(约3Pa)。B模型患侧鼻腔流量无明显增加,C模型总鼻道下方及下鼻道流量为80ml/s,约为原始模型的8倍。B模型在吸气相及呼气相气流流速及流动方式与原始模型无明显改变,C模型在鼻瓣区流速明显增加,达到1.04m/s,并且涡流的产生与正常鼻腔趋于一致。结论:模型C在恢复鼻腔的正常解剖形态及正常通气生理方面都明显优于模型B。在下鼻甲手术中,恢复鼻腔的正常解剖结构对于鼻腔疾病的治疗具有决定性的意义。
[Abstract]:Aim: to establish a computer fluid dynamics (CFD) model, which simulates two types of inferior turbinate resection, and to analyze its effect on nasal fluid dynamics. Methods: a CFD model of unilateral inferior turbinate hypertrophy nasal cavity was established. On this basis, two kinds of BPC models were established by simulating inferior turbinate resection. The flow field data of the three models were calculated by fluid analysis software Fluent6.3.26. Results compared with the original model, the nasal cavity area of the affected side of the ratio B model increased by 0.36 cm ~ (2) and C model increased by 0.89 cm ~ (2) C model. The pressure drop difference (about 8 Pa) of the affected side of the B model had no significant change compared with the original model. The pressure drop difference of the C model (about 3 Pa) .B model was significantly lower than that of the original model (about 3 Pa). There was no significant increase in nasal cavity flow under the total nasal tract and the lower nasal canal in the C model, which was about 8 times of that of the original model. The flow rate and flow pattern in the inspiratory and expiratory phases of the model were not significantly different from those of the original model. The velocity of the area increased obviously, Up to 1. 04 m / s, and eddy current production tends to be consistent with the normal nasal cavity. Conclusion: model C is superior to model B in restoring normal anatomic morphology and normal ventilation physiology of nasal cavity. In inferior turbinate surgery, the restoration of normal anatomic structure of nasal cavity plays a decisive role in the treatment of nasal diseases.
【作者单位】： 厦门市儿童医院耳鼻咽喉科;上海交通大学医学院附属瑞金医院耳鼻咽喉科;厦门大学机电工程系;
【分类号】：R765.9
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本文编号：2080194