Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid

Reza Kakulvand

doi:doi:10.11648/j.wjac.20190404.15

| Peer-Reviewed

Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid

Reza Kakulvand

Published in World Journal of Applied Chemistry (Volume 4, Issue 4)

Received: 1 September 2019 Accepted: 29 September 2019 Published: 19 November 2019

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

In a boundary wall of a pipe for developed laminar flow, to find the best example in which the least enthalpy and entropy are created, non-uniform distribution of convective flow in wall is studied. Some factors are simulated for transfer coefficient heat variations of moving the pipe. Distribution of temperature, entropy and enthalpy along the radius and distribution of generated entropy and enthalpy along the tube axis are shown. Entropy and enthalpy are reduced along the axis. Entropy, except some areas close to the wall, is increasing along the radius. Temperature and enthalpy, approaching the wall along the radius, have increased.

Published in	World Journal of Applied Chemistry (Volume 4, Issue 4)
DOI	10.11648/j.wjac.20190404.15
Page(s)	69-78
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Generated Entropy, Enthalpy, Computational Fluid Dynamics

References

[1]	A Bejan, Convection Heat Transfer, 3rd ed, New York, John Wiley & Sons; 2004, pp 1-24.
[2]	G. A. Antaki, Piping and Pipeline Engineering, New York, Basel Marcel Dekker, 2003.
[3]	F A. Morrison," Mechanical Energy Balance: Intro and Overview", Michigan, 9June, 2005.
[4]	A Bejan, "Entropy generation minimization: The new thermodynamics of finite-size devices and finite-time processes", Applied Physics Reviews, Vol. 79, No. 3, 1 February 1996.
[5]	C Xue-Tao. L Xin-Gang, "Applicability of the minimum entropy generation methodfor optimizing thermodynamic cycles", Chin. Phys. B Vol. 22, No. 1. 2013.
[6]	A. Gheorghlan, A. Dobrovicescu, A. Marin, C. IONIȚĂ,"Termodynamic optimization of Tubular Heat Exchangers based on minimum. Irreversibility Critera, Bucharest, 2013.
[7]	F. P. Incropera, D P Dewitt, Introduction to Heat Transfer, fourth ed, 2002.
[8]	J. A. Esfahani, P. B. Shahabi, Effect of "non-uniform heating on entropy generation for the laminar developing pipe flow of a high Prandtl number fluid", Energy Conversion and Management 51, 27 February 2010.
[9]	R. kakulvand, "Effect of non-uniform temperature distribution on entropy generation and enthalpy for the laminar developing pipe flow of a high Prandtl number fluid", chemical review and latter, 23 August, 2019.
[10]	R. kakulvand, "The effects of transient heat flux on the tube in contact with the natural convection, on enthalpy and entropy generation, for developed laminar flow of fluid with high Prandtl number", Persian journal of miiad andishe, February, 2018.
[11]	R. kakulvand, "Effect of non-uniform convection distribution on entropy generation and enthalpy for the laminar developing pipe flow of a high Prandtl number fluid", Persian journal of miiad andishe, February, 2018.
[12]	R. kakulvand, "Investigation of drag coefficients in gas – liquid tower and boundary conditions on pipes", Persian journal of miiad andishe, February, 2018.
[13]	Mohammed, H. A. and Y. K. Salman, Free convective heat transfer from a constant heat flux vertical circular tube with different entrance restrictions length. Energy Conversion and Management, 2007. 48 (7): p. 2233-2243.
[14]	Mohseni, M. and M. Bazargan, Entropy generation in turbulent mixed convection heat transfer to highly variable property pipe flow of supercritical fluids. Energy Conversion and Management, 2014. 87: p. 552-558.
[15]	Chang, C., X. Li, and Q. Q. Zhang, Experimental and Numerical Study of the Heat Transfer Characteristics in Solar Thermal Absorber Tubes with Circumferentially Non-uniform Heat Flux. Energy Procedia, 2014. 49: p. 305-313.
[16]	Minocha, N., et al., 3D CFD simulations to study the effect of inclination of condenser tube on natural convection and thermal stratification in a passive decay heat removal system. Nuclear Engineering and Design, 2016. 305: p. 582-603.
[17]	Bejan, A., The Method of Entropy Generation Minimization, in Energy and the Environment, A. Bejan, P. Vadász, and D. G. Kröger, Editors. 1999, Springer Netherlands: Dordrecht. p. 11-22.
[18]	Jha, B. K. and M. O. Oni, Natural convection flow in a vertical tube inspired by time-periodic heating. Alexandria Engineering Journal, 2016. 55 (4): p. 3145-3151.
[19]	Huang, D., et al., A brief review on convection heat transfer of fluids at supercritical pressures in tubes and the recent progress. Applied Energy, 2016. 162: p. 494-505.
[20]	Akbar, N. S., Entropy generation and energy conversion rate for the peristaltic flow in a tube with magnetic field. Energy, 2015. 82: p. 23-30.
[21]	Wang, T., Z. Huang, and G. Xi, Entropy generation for mixed convection in a square cavity containing a rotating circular cylinder using a local radial basis function method. International Journal of Heat and Mass Transfer, 2017. 106: p. 1063-1073.
[22]	Elsherbiny, S. M., M. A. Teamah, and A. R. Moussa, Experimental mixed convection heat transfer from an isothermal horizontal square cylinder. Experimental Thermal and Fluid Science, 2017. 82: p. 459-471.
[23]	Heo, J. -H. and B. -J. Chung, Influence of helical tube dimensions on open channel natural convection heat transfer. International Journal of Heat and Mass Transfer, 2012. 55 (11–12): p. 2829-2834.
[24]	Chen, H. -T., et al., Numerical and experimental study of natural convection heat transfer characteristics for vertical plate fin and tube heat exchangers with various tube diameters. International Journal of Heat and Mass Transfer, 2016. 100: p. 320-331.
[25]	Jiji, L., M. Heat Convection, New York, 2006.

Cite This Article

Plain Text BibTeX RIS

APA Style

Reza Kakulvand. (2019). Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid. World Journal of Applied Chemistry, 4(4), 69-78. https://doi.org/10.11648/j.wjac.20190404.15

Copy | Download

ACS Style

Reza Kakulvand. Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid. World J. Appl. Chem. 2019, 4(4), 69-78. doi: 10.11648/j.wjac.20190404.15

Copy | Download

AMA Style

Reza Kakulvand. Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid. World J Appl Chem. 2019;4(4):69-78. doi: 10.11648/j.wjac.20190404.15

Copy | Download

@article{10.11648/j.wjac.20190404.15,
  author = {Reza Kakulvand},
  title = {Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid},
  journal = {World Journal of Applied Chemistry},
  volume = {4},
  number = {4},
  pages = {69-78},
  doi = {10.11648/j.wjac.20190404.15},
  url = {https://doi.org/10.11648/j.wjac.20190404.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjac.20190404.15},
  abstract = {In a boundary wall of a pipe for developed laminar flow, to find the best example in which the least enthalpy and entropy are created, non-uniform distribution of convective flow in wall is studied. Some factors are simulated for transfer coefficient heat variations of moving the pipe. Distribution of temperature, entropy and enthalpy along the radius and distribution of generated entropy and enthalpy along the tube axis are shown. Entropy and enthalpy are reduced along the axis. Entropy, except some areas close to the wall, is increasing along the radius. Temperature and enthalpy, approaching the wall along the radius, have increased.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid
AU  - Reza Kakulvand
Y1  - 2019/11/19
PY  - 2019
N1  - https://doi.org/10.11648/j.wjac.20190404.15
DO  - 10.11648/j.wjac.20190404.15
T2  - World Journal of Applied Chemistry
JF  - World Journal of Applied Chemistry
JO  - World Journal of Applied Chemistry
SP  - 69
EP  - 78
PB  - Science Publishing Group
SN  - 2637-5982
UR  - https://doi.org/10.11648/j.wjac.20190404.15
AB  - In a boundary wall of a pipe for developed laminar flow, to find the best example in which the least enthalpy and entropy are created, non-uniform distribution of convective flow in wall is studied. Some factors are simulated for transfer coefficient heat variations of moving the pipe. Distribution of temperature, entropy and enthalpy along the radius and distribution of generated entropy and enthalpy along the tube axis are shown. Entropy and enthalpy are reduced along the axis. Entropy, except some areas close to the wall, is increasing along the radius. Temperature and enthalpy, approaching the wall along the radius, have increased.
VL  - 4
IS  - 4
ER  -

Copy | Download

Author Information

Reza Kakulvand

Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, Iran

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Reza Kakulvand. (2019). Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid. World Journal of Applied Chemistry, 4(4), 69-78. https://doi.org/10.11648/j.wjac.20190404.15

Copy | Download

ACS Style

Reza Kakulvand. Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid. World J. Appl. Chem. 2019, 4(4), 69-78. doi: 10.11648/j.wjac.20190404.15

Copy | Download

AMA Style

Reza Kakulvand. Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid. World J Appl Chem. 2019;4(4):69-78. doi: 10.11648/j.wjac.20190404.15

Copy | Download

@article{10.11648/j.wjac.20190404.15,
  author = {Reza Kakulvand},
  title = {Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid},
  journal = {World Journal of Applied Chemistry},
  volume = {4},
  number = {4},
  pages = {69-78},
  doi = {10.11648/j.wjac.20190404.15},
  url = {https://doi.org/10.11648/j.wjac.20190404.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjac.20190404.15},
  abstract = {In a boundary wall of a pipe for developed laminar flow, to find the best example in which the least enthalpy and entropy are created, non-uniform distribution of convective flow in wall is studied. Some factors are simulated for transfer coefficient heat variations of moving the pipe. Distribution of temperature, entropy and enthalpy along the radius and distribution of generated entropy and enthalpy along the tube axis are shown. Entropy and enthalpy are reduced along the axis. Entropy, except some areas close to the wall, is increasing along the radius. Temperature and enthalpy, approaching the wall along the radius, have increased.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Effect of Non-uniform Convection on Entropy Generation and Enthalpy for the Laminar Developing Pipe Flow of a High Prandtl Number Fluid
AU  - Reza Kakulvand
Y1  - 2019/11/19
PY  - 2019
N1  - https://doi.org/10.11648/j.wjac.20190404.15
DO  - 10.11648/j.wjac.20190404.15
T2  - World Journal of Applied Chemistry
JF  - World Journal of Applied Chemistry
JO  - World Journal of Applied Chemistry
SP  - 69
EP  - 78
PB  - Science Publishing Group
SN  - 2637-5982
UR  - https://doi.org/10.11648/j.wjac.20190404.15
AB  - In a boundary wall of a pipe for developed laminar flow, to find the best example in which the least enthalpy and entropy are created, non-uniform distribution of convective flow in wall is studied. Some factors are simulated for transfer coefficient heat variations of moving the pipe. Distribution of temperature, entropy and enthalpy along the radius and distribution of generated entropy and enthalpy along the tube axis are shown. Entropy and enthalpy are reduced along the axis. Entropy, except some areas close to the wall, is increasing along the radius. Temperature and enthalpy, approaching the wall along the radius, have increased.
VL  - 4
IS  - 4
ER  -

Copy | Download