The diameter effect in drag reduction

J. Vleggaar; W.R. Dammers; M. Tels

doi:10.1016/0009-2509(68)87101-5

The diameter effect in drag reduction

J. Vleggaar, W.R. Dammers, M. Tels

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Abstract

A simple mechanism is suggested for providing a quant. explanation of the so-called diam. effect in drag redn. Equations are derived from the rheological equation of state of a Maxwell fluid (W. L. Wilkinson, 1960) and indicate that the viscoelastic behavior of a Maxwell fluid is closely related to the value of the dimensionless quantity wt, where w = the angular frequency and t = the relaxation time. If 1/w is interpreted as a characteristic flow time of the disturbances created by the eddies, then wt represents the ratio of a relaxation time to a characteristic flow time and consequently, takes the form of a Deborah no. as defined by M. Reiner (1964). [on SciFinder (R)]

Original language	English
Pages (from-to)	1159-1160
Journal	Chemical Engineering Science
Volume	23
Issue number	9
DOIs	https://doi.org/10.1016/0009-2509(68)87101-5
Publication status	Published - 1968

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title = "The diameter effect in drag reduction",

abstract = "A simple mechanism is suggested for providing a quant. explanation of the so-called diam. effect in drag redn. Equations are derived from the rheological equation of state of a Maxwell fluid (W. L. Wilkinson, 1960) and indicate that the viscoelastic behavior of a Maxwell fluid is closely related to the value of the dimensionless quantity wt, where w = the angular frequency and t = the relaxation time. If 1/w is interpreted as a characteristic flow time of the disturbances created by the eddies, then wt represents the ratio of a relaxation time to a characteristic flow time and consequently, takes the form of a Deborah no. as defined by M. Reiner (1964). [on SciFinder (R)]",

author = "J. Vleggaar and W.R. Dammers and M. Tels",

year = "1968",

doi = "10.1016/0009-2509(68)87101-5",

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T1 - The diameter effect in drag reduction

AU - Vleggaar, J.

AU - Dammers, W.R.

AU - Tels, M.

PY - 1968

Y1 - 1968

N2 - A simple mechanism is suggested for providing a quant. explanation of the so-called diam. effect in drag redn. Equations are derived from the rheological equation of state of a Maxwell fluid (W. L. Wilkinson, 1960) and indicate that the viscoelastic behavior of a Maxwell fluid is closely related to the value of the dimensionless quantity wt, where w = the angular frequency and t = the relaxation time. If 1/w is interpreted as a characteristic flow time of the disturbances created by the eddies, then wt represents the ratio of a relaxation time to a characteristic flow time and consequently, takes the form of a Deborah no. as defined by M. Reiner (1964). [on SciFinder (R)]

AB - A simple mechanism is suggested for providing a quant. explanation of the so-called diam. effect in drag redn. Equations are derived from the rheological equation of state of a Maxwell fluid (W. L. Wilkinson, 1960) and indicate that the viscoelastic behavior of a Maxwell fluid is closely related to the value of the dimensionless quantity wt, where w = the angular frequency and t = the relaxation time. If 1/w is interpreted as a characteristic flow time of the disturbances created by the eddies, then wt represents the ratio of a relaxation time to a characteristic flow time and consequently, takes the form of a Deborah no. as defined by M. Reiner (1964). [on SciFinder (R)]

U2 - 10.1016/0009-2509(68)87101-5

DO - 10.1016/0009-2509(68)87101-5

M3 - Article

SN - 0009-2509

VL - 23

SP - 1159

EP - 1160

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 9

ER -

The diameter effect in drag reduction

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