Viscosity correction in convective heat transfer correlation of non-Newtonian fluid pipe flow: Revisited

Nayak, Saswat; Mondal, Sourav

doi:10.1016/j.ces.2021.116472

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Generally, the lower value of n was attributed to the increase of _ γ, with the significant decrease on the apparent viscosity η: 36 As shown in Figure 3b, the n of neat PMMA at 240 C, 250 C, and 260 C stated to decrease from around 0.40 with gentle slopes. Furthermore, the n of PMMA + PAcr/SiO 2 dropped from 0.55 to 0.13 at 240 C and 260 C. Apparently, they showed greater slopes than the neat PMMA fibers at the same temperatures.…”

Section: Rheological Characterization Of Composite Fibersmentioning

confidence: 82%

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Cui

Zhang

Zhu

et al. 2022

J of Applied Polymer Sci

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The dispersion and orientation arrangement of functional polymers with fillers are critical to their performance. However, there are rare detailed researches on the visualization of the orientation process about functional fillers in composite melts and the mechanistic effects on performance. In this work, it explored the change process of the orientation morphology for polyacrylate/silica (PAcr/SiO2) composite microspheres in polymethyl methacrylate (PMMA) at different melting temperatures. Afterwards, the morphology and distribution of oriented microfibers in composite fibers melted at different temperatures were observed by transmission electron microscope (TEM). The results showed that composite microfibers could be formed in tight arrangement and obtained average orientation of 50.88 in the composite fibers at 250°C. Under this circumstance, the addition of nano SiO2 particles had no effect on the rheological type. Meanwhile, the shear stress was 99.29% higher than that of pure PMMA system under the same conditions. As for the elongation at break, it was found that the elongation at break of the composite fiber prepared at 250°C was 169.43% higher than that of pure PMMA. Therefore, it provided a new method to achieve well dispersion of functional fillers in molten systems. Furthermore, it was beneficial to enhance the elongation at break of functional composites.

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Section: Rheological Characterization Of Composite Fibersmentioning

confidence: 82%

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Cui

Zhang

Zhu

et al. 2022

J of Applied Polymer Sci

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“…1 The determination of viscosity of liquid mixtures are of interest in chemical industries and chemical engineering involving fluid transportation, process design, pump operations, heat exchange, mixing agitation etc. [2][3][4][5][6][7][8][9] In the present work, densities and viscosities of binary mixtures of dimethyl sulphoxide with some alcohols such as methanol, ethanol, 1-propanol, iso-propanol, 1-butanol, iso-butanol, ter-butanol have been measured at 298.15 K. For binary and non-electrolytic solutions, vvarious theories have been developed such as Bingham, Kendall-Munroe, Arrhenius-Eyring, Katti and Chaudhari, Grunberg-Nissan etc. These theories are tested for these studied binary mixtures using experimental data of viscosities.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of viscosity in binary mixtures of dimethyl sulphoxide at 298.15K

Baluja¹

2021

JAPLR

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The viscosity of binary mixtures of dimethyl sulphoxide with different alcohols such as methanol, ethanol, 1-propanol, iso-propanol, 1-butanol, iso-butanol, tertiary butanol has been determined at 298.15K. The experimental values are compared with theoretical values evaluated by different theories. It is observed that for some theories, values are in agreement with the experimental values. Further, an attempt has been made to study the intermolecular interactions in studied solutions in terms of excess free energy of mixing, strength of interaction parameters and interaction energy. The viscosity data of pure liquids and their mixtures are needed to design various chemical processes where heat and mass transfer are important.

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CFD analysis of different finned tube heat exchanger designs using a non newtonian fluid

Raushan¹,

Yadav²,

Mohan³

et al. 2023

Materials Today: Proceedings

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Viscosity correction in convective heat transfer correlation of non-Newtonian fluid pipe flow: Revisited

Cited by 3 publications

References 33 publications

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Evaluation of viscosity in binary mixtures of dimethyl sulphoxide at 298.15K

CFD analysis of different finned tube heat exchanger designs using a non newtonian fluid

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Viscosity correction in convective heat transfer correlation of non-Newtonian fluid pipe flow: Revisited

Cited by 3 publications

References 33 publications

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO2) composite microspheres in twin‐screw extruder

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO2) composite microspheres in twin‐screw extruder

Evaluation of viscosity in binary mixtures of dimethyl sulphoxide at 298.15K

CFD analysis of different finned tube heat exchanger designs using a non newtonian fluid

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Product

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About

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder