STUDY OF THE HELIX ANGLE EFFECT ON THE PUMPING PERFORMANCE OF NEWTONIAN AND NON-NEWTONIAN FLOWS IN SINGLE SCREW EXTRUDERS

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DIALAME MOJTABA; KAMYABI ATA; MORADI ALI

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:10 Page(s): 158-164

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Title

STUDY OF THE HELIX ANGLE EFFECT ON THE PUMPING PERFORMANCE OF NEWTONIAN AND NON-NEWTONIAN FLOWS IN SINGLE SCREW EXTRUDERS

Author(s)

DIALAME MOJTABA | KAMYABI ATA | MORADI ALI | Issue Writer Certificate

Keywords

OPTIMUM ANGLE OF EXTRUDER SCREWQ2

MAXIMUM FLOW RATEQ2

SINGLE SCREW EXTRUDERQ2

CARREAU YASUDA MODELQ2

Abstract

In this research the effect of the screw angle and the depth of the channel were examined on the flow rate of an incompressible Newtonian isothermal and a non-Newtonian fluid flow in a SINGLE SCREW EXTRUDER. In the present study only drag force was considered rather than pressure drop. For this purpose, the extruder channel was assumed to be a cubic and spiral channel. Accordingly the Newtonian flow was simulated by Fluent software package and the results were compared with analytical solution in several angles. Then one step from the shallow spiral channel was examined and the results were compared with analytical solution in different angles and also at low Reynolds numbers. Hence, the obtained results reveal the range of validity for the analytical solution at different Reynolds numbers. As the results show, at low Reynolds numbers, up to 10, and the ratio of channel depth to diameter, less than 0.2, numerical and analytical results are the same for Newtonian fluids. Identically, in this range the analytical solution can be used for screw design, calculation of the MAXIMUM FLOW RATE, the evaluation of the optimum angle, etc. The results of the study of non-Newtonian fluid showed that the flow rate at low screw angles for non-Newtonian fluids was higher than the Newtonian cases and at high angles, were smaller.

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APA: Copy

DIALAME, MOJTABA, KAMYABI, ATA, & MORADI, ALI. (2016). STUDY OF THE HELIX ANGLE EFFECT ON THE PUMPING PERFORMANCE OF NEWTONIAN AND NON-NEWTONIAN FLOWS IN SINGLE SCREW EXTRUDERS. MODARES MECHANICAL ENGINEERING, 15(10), 158-164. SID. https://sid.ir/paper/179631/en

Vancouver: Copy

DIALAME MOJTABA, KAMYABI ATA, MORADI ALI. STUDY OF THE HELIX ANGLE EFFECT ON THE PUMPING PERFORMANCE OF NEWTONIAN AND NON-NEWTONIAN FLOWS IN SINGLE SCREW EXTRUDERS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(10):158-164. Available from: https://sid.ir/paper/179631/en

IEEE: Copy

MOJTABA DIALAME, ATA KAMYABI, and ALI MORADI, “STUDY OF THE HELIX ANGLE EFFECT ON THE PUMPING PERFORMANCE OF NEWTONIAN AND NON-NEWTONIAN FLOWS IN SINGLE SCREW EXTRUDERS,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 10, pp. 158–164, 2016, [Online]. Available: https://sid.ir/paper/179631/en

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