Entropy Generation and Exergy Destruction in Flow of Multiphase Dispersions of Droplets and Particles in a Polymeric Liquid
Abstract
:1. Introduction
2. Theoretical Background
2.1. Entropy Balance in Fluid Flow
2.2. Momentum and Energy Balance Equations for Fluid Flow
2.3. Application of the Gibbs Equation to Fluid Flow
2.4. Exergy Destruction in Fluid Flow
3. Experimental Work
3.1. Experimental Set Up
3.2. Preparation of Multiphase Dispersions
4. Results and Discussion
4.1. Two-Phase Dispersions
4.1.1. Rheology of Two-Phase Dispersions
4.1.2. Exergy Destruction in Flow of Two-Phase Dispersions
4.2. Multi-Phase Dispersions of Oil and Water in a Polymeric Matrix
4.2.1. Exergy Destruction in Multi-Phase Dispersions
4.2.2. Model for Calculation of Exergy Destruction in Multi-Phase Dispersions
5. Practical Implications of This Work
6. Conclusions
- (a)
- The addition of oil droplets to a polymeric matrix does not alter the consistency index and flow behavior index of the system to any appreciable extent.
- (b)
- The addition of solid particles to a polymeric matrix does not alter the flow behavior index significantly, but the consistency index increases sharply with the increase in the particle concentration.
- (c)
- The exergy destruction rate in flow of emulsions of oil droplets and polymeric matrix does not change to any appreciable extent with the increase in the concentration of oil droplets.
- (d)
- The exergy destruction rate in flow of suspensions of solid particles and polymeric matrix increases with the increase in particle concentration.
- (e)
- Three-phase blends of oil droplets, solid particles, and polymeric matrix, can be modelled as two-phase blends of solid particles dispersed in an effective matrix composed of oil droplets and polymeric matrix.
- (f)
- A model is proposed to estimate the exergy destruction rates in flow of three-phase dispersions of oil droplets, solid particles, and polymeric matrix.
Conflicts of Interest
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Volume Percent of Glass Particles | Regression Correlation Coefficient, R2 | Flow Behavior Index, n | Consistency Index, K (Units of Pa.sn) | 95% Confidence Interval of n | 95% Confidence Interval of K |
---|---|---|---|---|---|
0 | 0.9863 | 0.540 | 6.05 | [0.507, 0.573] | [5.45, 6.73] |
17.6 | 0.9884 | 0.557 | 9.76 | [0.527, 0.587] | [8.94, 10.58] |
28.9 | 0.9866 | 0.518 | 16.91 | [0.479, 0.558] | [15.10, 18.94] |
37.7 | 0.9908 | 0.524 | 26.85 | [0.488, 0.560] | [24.61, 29.26] |
44.9 | 0.9913 | 0.468 | 55.09 | [0.452, 0.484] | [53.36, 56.88] |
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Pal, R. Entropy Generation and Exergy Destruction in Flow of Multiphase Dispersions of Droplets and Particles in a Polymeric Liquid. Fluids 2018, 3, 19. https://doi.org/10.3390/fluids3010019
Pal R. Entropy Generation and Exergy Destruction in Flow of Multiphase Dispersions of Droplets and Particles in a Polymeric Liquid. Fluids. 2018; 3(1):19. https://doi.org/10.3390/fluids3010019
Chicago/Turabian StylePal, Rajinder. 2018. "Entropy Generation and Exergy Destruction in Flow of Multiphase Dispersions of Droplets and Particles in a Polymeric Liquid" Fluids 3, no. 1: 19. https://doi.org/10.3390/fluids3010019
APA StylePal, R. (2018). Entropy Generation and Exergy Destruction in Flow of Multiphase Dispersions of Droplets and Particles in a Polymeric Liquid. Fluids, 3(1), 19. https://doi.org/10.3390/fluids3010019