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流变学流体的蠕动传输:食道中食物块的运动模型

J·C·密斯拉 S·麦蒂

J·C·密斯拉, S·麦蒂. 流变学流体的蠕动传输:食道中食物块的运动模型[J]. 应用数学和力学, 2012, 33(3): 303-319. doi: 10.3879/j.issn.1000-0887.2012.03.004
引用本文: J·C·密斯拉, S·麦蒂. 流变学流体的蠕动传输:食道中食物块的运动模型[J]. 应用数学和力学, 2012, 33(3): 303-319. doi: 10.3879/j.issn.1000-0887.2012.03.004
J.C.Misra, S.Maiti. Peristaltic Transport of a Rheological Fluid: Model for Movement of Food Bolus Through Esophagus[J]. Applied Mathematics and Mechanics, 2012, 33(3): 303-319. doi: 10.3879/j.issn.1000-0887.2012.03.004
Citation: J.C.Misra, S.Maiti. Peristaltic Transport of a Rheological Fluid: Model for Movement of Food Bolus Through Esophagus[J]. Applied Mathematics and Mechanics, 2012, 33(3): 303-319. doi: 10.3879/j.issn.1000-0887.2012.03.004

流变学流体的蠕动传输:食道中食物块的运动模型

doi: 10.3879/j.issn.1000-0887.2012.03.004
详细信息
  • 中图分类号: O357.2;O361.3

Peristaltic Transport of a Rheological Fluid: Model for Movement of Food Bolus Through Esophagus

  • 摘要: 研究食道中蠕动传输的流体力学.对任意的波形和任意的管道长度,建立起流变学流体蠕动传输的数学模型.用粘性流体的Ostwald-deWaele幂定律,描述非Newton流体的流动特性.解析公式化模型,详细且精确地给出食物块在食道中蠕动传输相关的一些重要性质.分析中应用了润滑理论,本研究特别适合于Reynolds数不大的情况.将食道看作环形的管道,通过食道壁周期性的收缩来传输食物块.就单个波和周期性收缩一组波的传播,研究与传输过程有关变量的变化,如压力、流速、食物颗粒轨迹以及流量等.局部压力的变化,对流变指数n有着高度的敏感性.研究结果清晰地表明,食物块在食道中蠕动传输时,Newton流体或流变学流体构成的连续流体,以组合波传播比大间隔单波传播,传输效率要高得多.
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  • 被引次数: 0
出版历程
  • 收稿日期:  2011-03-16
  • 修回日期:  2011-12-06
  • 刊出日期:  2012-03-15

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