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 | |
| Publication status | Published - 1968 |
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Vleggaar, J., Dammers, W. R., & Tels, M. (1968). The diameter effect in drag reduction. Chemical Engineering Science, 23(9), 1159-1160. https://doi.org/10.1016/0009-2509(68)87101-5