Flow regimes, hold–up and pressure drop for two phase flowin helical coils

Canadian Journal of Chemical Engineering - Tập 68 Số 4 - Trang 553-559 - 1990
A. Saxena1, Adrian Schumpe1, K.D.P. Nigam1, W.‐D. Deckwer1
1Technische Chemie, Universität Oldenburg, D‐2900 Oldenburg, West Germany

Tóm tắt

AbstractExperimental results on flow pattern, hold–up and pressure drop are presented for cocurrent upward and downward air water flow in helical coils. A tube of 0.01 m internal diameter was used and the ratio of coil to tube diameter was varied from 11 to 156.5. Water flow rate was varied from 4.9 × 10‐6 m3/s to 92 × 10‐6 m3/s while the range of gas flow rate covered was 83 × 10‐6 m3/s to 610 × 10‐6 m3/s.A new mechanistic approach is proposed to correlate pressure drop data in coils. The proposed model retains the identity of each phase and separately accounts for the effects of curvature and tube inclination resulting from the torsion of the tube. This makes it possible to use a single model to predict pressure drop for both upward and downward two–phase flow in coiled tubes. Required correlations for hold–up, interfacial friction factor and friction factors for individual phases are provided.

Từ khóa


Tài liệu tham khảo

10.1002/cjce.5450510303

10.1299/jsme1958.14.564

10.1002/cjce.5450470509

Buffham B. A., 1960, Laminar Flow in Open Circular Channels and Symmetrical Lenticular Tubes, Trans. Inst. Chem. Engrs., 46, T152

10.1002/aic.690250106

10.1002/aic.690100118

Govier G. W., 1972, The Flow of Complex Mixtures in Pipes

10.1016/0009-2509(88)80072-1

Ito H., 1959, Basic Eng., Trans. A.S.M.E. Series D, 81, 123, 10.1115/1.4008390

Lockhart R. W., 1949, Proposed Correlation of Data for Isothermal Two Phase, Two Component Flow in Pipes, Chem. Eng. Prog., 45, 39

10.1137/0111030

10.1021/i260069a017

10.1021/i200013a033

10.1016/0300-9467(84)80005-2

10.1021/i260017a007

10.1002/aic.690200406

10.1016/0301-9322(82)90050-7

10.1002/aic.690130105

Thông tin
Thông tin xuất bản

Canadian Journal of Chemical Engineering

Tập 68 Số 4

553-559

Thông tin tác giả