| 橡胶弯管胶料在挤出流道中流场的有限差分法计算 |
| Application of Finite Difference Method to Calculating Flow Field in Extrusion Runner of Curved Rubber Hose |
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| DOI： |
| 中文关键词: 橡胶弯管 挤出 流场 有限差分法 双圆柱坐标系 偏心圆环域 矩形域 |
| 英文关键词: curved rubber hose extrusion flow field finite difference method bicylindrical coordinates eccentric annular region rectanglar region |
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| 中文摘要: |
| 用有限差分法计算幂律流动胶料在橡胶弯管挤出流道中的流场。结果表明，选用双圆柱坐标系可将幂律流动胶料在偏心圆环域中的轴向层流流动计算转换为简单的矩形域流动计算，采用平面有限差分法计算速度场能得到弯管宽隙和窄隙处的胶料流速比，计算结果与试验结果基本吻合。 |
| 英文摘要: |
| The flow field of a power-law fluid in extrusion runner of curved rubber hose was calculated with the finite difference method.The results showed that as for calculating the axial laminar flow of power-law fluid，the bicylindrical coordinates could be chosen to transform the eccentric annular region to the simple rectanglar region；the flow velocity ratio of the wide and narrow sides in curved hose could be obtained by alculating the velocity field using plane finite difference method；and the calculated results were basically in accordance with the measured ones. |
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