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Theoretical studies of nonisothermal...

Shu, Yan-Ho.

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Theoretical studies of nonisothermal multilayer coextrusion flow---a new approach.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Theoretical studies of nonisothermal multilayer coextrusion flow---a new approach./
作者:	Shu, Yan-Ho.
面頁冊數:	117 p.
附註:	Source: Dissertation Abstracts International, Volume: 50-04, Section: B, page: 1538.
Contained By:	Dissertation Abstracts International50-04B.
標題:	Engineering, Chemical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8912997

Theoretical studies of nonisothermal multilayer coextrusion flow---a new approach.
Shu, Yan-Ho.

Theoretical studies of nonisothermal multilayer coextrusion flow---a new approach. - 117 p.

Source: Dissertation Abstracts International, Volume: 50-04, Section: B, page: 1538.

Thesis (Ph.D.)--University of Massachusetts Lowell, 1988.

A new approach to simulating non-isothermal multi-layer coextrusion flow has been introduced. Using a stream function as the cross-stream coordinate and matching control volume faces with the interfaces, this approach allows us to predict the interface positions efficiently in the case of multiple interface situations.Subjects--Topical Terms:

1018531
Engineering, Chemical.

Theoretical studies of nonisothermal multilayer coextrusion flow---a new approach.
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100 1 $a Shu, Yan-Ho. $3 1907568
245 1 0 $a Theoretical studies of nonisothermal multilayer coextrusion flow---a new approach.
300 $a 117 p.
500 $a Source: Dissertation Abstracts International, Volume: 50-04, Section: B, page: 1538.
500 $a Supervisor: S. J. Chen.
502 $a Thesis (Ph.D.)--University of Massachusetts Lowell, 1988.
520 $a A new approach to simulating non-isothermal multi-layer coextrusion flow has been introduced. Using a stream function as the cross-stream coordinate and matching control volume faces with the interfaces, this approach allows us to predict the interface positions efficiently in the case of multiple interface situations.
520 $a Our predicted results for non-isothermal two-layer coextrusion flow in a rectangular duct are in good agreement with the published experimental results. At the entrance region, our predicted interface positions shows drastic variations in response to the temperature variations.
520 $a For isothermal two-layer concentric flow in a circular die, our computational results are nearly identical to the published results of a finite element method.
520 $a Numerical experiments were carried out for non-isothermal three-layer coextrusion flow in a flat rectangular die in the range, 10 $\ sp2 $ $\ leq $ Peclet number $\ leq $ 10 $\ sp4 $ and 0.1 $\ leq $ Nahme number $\ leq $ 10. Also investigated are the variations of flow rate ratio and entrance temperatures. For Nahme number greater than unity, viscous dissipation leads to significant viscosity changes.
520 $a The comparison between seven-layer and three-layer coextrusion flow in a flat rectangular die reveals that the center layer structure difference between them does not make significant difference in the developments of velocity, temperature, and pressure gradient. Similar conclusion can be drawn from the comparison of single phase, two-layer, and three-layer flow in a circular die.
520 $a In terms of Biot number (of 0, 10, 100, and $\ infty $) , more realistic thermal boundary conditions were under investigation. In the case of low melt viscosity, the fully developed temperature at the centerline increases with decreasing Biot number due to the dominance of heat conduction over viscous dissipation. Also studied is a case of non-isothermal four-layer concentric coextrusion flow in an annular die.
590 $a School code: 0111.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Engineering, Packaging. $3 1025152
690 $a 0542
690 $a 0548
690 $a 0549
710 2 0 $a University of Massachusetts Lowell. $3 1017839
773 0 $t Dissertation Abstracts International $g 50-04B.
790 1 0 $a Chen, S. J., $e advisor
790 $a 0111
791 $a Ph.D.
792 $a 1988
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8912997