Effect of eccentricity and inner pipe motion on flow instability for flow through annulus

نویسندگان

چکیده

Abstract Present work implements the Energy gradient method (EGM) to study effect of variation in eccentricity, radius ratio and inner pipe movement on fully developed flow Newtonian fluid through an annulus for instability. The formula stability parameter has been derived considering eccentricity annulus. Results have plotted (K) various ratio. Further, relationships critical also obtained. Flow instability is very crucial oil well drilling process as turbulent desirable transportation rock cuttings surface generated during process.

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ژورنال

عنوان ژورنال: SN applied sciences

سال: 2021

ISSN: ['2523-3971', '2523-3963']

DOI: https://doi.org/10.1007/s42452-021-04500-z