Frequency-dependent friction for non-Newtonian power-law fluid in transient pipe flow

DOI

10.2991/icmeme-16.2016.11How to use a DOI?

Keywords

non-Newtonian, frequency-dependent friction, valves, pressure waves

Abstract

The pressure wave transmitted in the non-Newtonian drilling fluid is widely used for the information transmission in Measurement While Drilling/Logging While Drilling technology. It is essential to get the friction model in the non-Newtonian drilling fluid to evaluate the signal attenuation. A model of transient non-Newtonian power-law pipe flow is developed by assuming a steady viscosity varied only with the radius, and the solution is derived analytically in the complex domain and time domain. The analysis results show that the shear stress which is the friction term in the motion equation increases with the n increase, and decreases with the frequency increase. The trend of signal attenuation increases with the frequency increase, but for different n, the signalattenuation varies significantly, which decreases with the n increase.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Peng Jia
AU  - Jun Fang
PY  - 2016/12
DA  - 2016/12
TI  - Frequency-dependent friction for non-Newtonian power-law fluid in transient pipe flow
BT  - Proceedings of the 5th International Conference on Mechanical Engineering, Materials and Energy (5th ICMEME2016)
PB  - Atlantis Press
SP  - 63
EP  - 67
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmeme-16.2016.11
DO  - 10.2991/icmeme-16.2016.11
ID  - Jia2016/12
ER  -