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A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes
นักวิจัย : Li, Haiwang , Wong, Teck Neng , Skote, Martin , Duan, Fei
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2556
อ้างอิง : Li, H., Wong, T. N., Skote, M., & Duan, F. (2013). A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes. Chemical Engineering Science, 102,121-128. , 0009-2509 , http://hdl.handle.net/10220/17776 , http://dx.doi.org/10.1016/j.ces.2013.07.046 , 175149
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Chemical engineering science
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A model of two-phase non-Newtonian horizontal annular flows, which predicts film thickness and pressure gradient from flowrates only, is presented. In the model, the gas and non-Newtonian liquid flows are calculated separately based on the independent governing equations. The shear stress balance at the gas–liquid interface is calculated in order to link two phases together. The non-Newtonian fluid is assumed as a power-law shear-thinning liquid. The logarithmic velocity distribution is chosen to calculate the turbulent velocity profile in the gas core. The influences of entrainment and aeration are included in the model. The pressure drop, film thickness, void fraction, the frictional multiplier, and Lockhart–Martinelli parameter are predicted. The analytical model is compared with the published experimental investigations, and the results show that the model can predict the film thickness and pressure gradient simultaneously based on the flowrates of liquid and gas. The frictional multiplier and Lockhart–Martinelli parameter are calculated at the same time, and the predicted values are comparable with the experimental data. The difference between the analytical model and the experiments is lower than 10%.

บรรณานุกรม :
Li, Haiwang , Wong, Teck Neng , Skote, Martin , Duan, Fei . (2556). A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Li, Haiwang , Wong, Teck Neng , Skote, Martin , Duan, Fei . 2556. "A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Li, Haiwang , Wong, Teck Neng , Skote, Martin , Duan, Fei . "A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2556. Print.
Li, Haiwang , Wong, Teck Neng , Skote, Martin , Duan, Fei . A simple model for predicting the pressure drop and film thickness of non-Newtonian annular flows in horizontal pipes. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2556.