Investigation of Non-Newtonian Fluid Effects during Transient Flows in a Pipeline

MAJD, Ali ;AHMADI, Ahmad ;KERAMAT, Alireza .
Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 62, n.2, p. 105-115, june 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/investigation-of-non-newtonian-fluid-effects-during-transient-flows-in-a-pipeline/>. Date accessed: 23 jan. 2026. 
doi:http://dx.doi.org/10.5545/sv-jme.2015.2787.

Majd, A., Ahmadi, A., & Keramat, A.
(2016).
Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline.
Strojniški vestnik - Journal of Mechanical Engineering, 62(2), 105-115.
doi:http://dx.doi.org/10.5545/sv-jme.2015.2787

@article{sv-jmesv-jme.2015.2787,
	author = {Ali  Majd and Ahmad  Ahmadi and Alireza  Keramat},
	title = {Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {62},
	number = {2},
	year = {2016},
	keywords = {transient pipe flow; generalized Newtonian fluid; shear thinning fluids},
	abstract = {A sudden change in the flow rate brings about significant pressure oscillations in the piping system, known as water hammer (fluid hammer). Unsteady flow of a non-Newtonian fluid due to instantaneous valve closure is studied. Power law and Cross models are used to simulate non-Newtonian effects. Firstly, the appropriate governing equations are derived and then, they are solved by a numerical approach. A fourth-order Runge–Kutta scheme is used for the time integration, and the central difference scheme is employed for the spatial derivatives discretization. To verify the proposed mathematical model and numerical solution, a comparison with corresponding experimental results from the literature are made. The results reveal a remarkable deviation in pressure history and velocity profile with respect to the water hammer in Newtonian fluids. The significance of the non-Newtonian fluid behaviour is manifested in terms of the drag reduction and line packing effect observed in the pressure history results. A detailed discussion regarding the fluid viscosity and its shear-stress diagrams are also included.},
	issn = {0039-2480},	pages = {105-115},	doi = {10.5545/sv-jme.2015.2787},
	url = {https://www.sv-jme.eu/article/investigation-of-non-newtonian-fluid-effects-during-transient-flows-in-a-pipeline/}
}

Majd, A.,Ahmadi, A.,Keramat, A.
2016 June 62. Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 62:2

%A Majd, Ali 
%A Ahmadi, Ahmad 
%A Keramat, Alireza 
%D 2016
%T Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline
%B 2016
%9 transient pipe flow; generalized Newtonian fluid; shear thinning fluids
%! Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline
%K transient pipe flow; generalized Newtonian fluid; shear thinning fluids
%X A sudden change in the flow rate brings about significant pressure oscillations in the piping system, known as water hammer (fluid hammer). Unsteady flow of a non-Newtonian fluid due to instantaneous valve closure is studied. Power law and Cross models are used to simulate non-Newtonian effects. Firstly, the appropriate governing equations are derived and then, they are solved by a numerical approach. A fourth-order Runge–Kutta scheme is used for the time integration, and the central difference scheme is employed for the spatial derivatives discretization. To verify the proposed mathematical model and numerical solution, a comparison with corresponding experimental results from the literature are made. The results reveal a remarkable deviation in pressure history and velocity profile with respect to the water hammer in Newtonian fluids. The significance of the non-Newtonian fluid behaviour is manifested in terms of the drag reduction and line packing effect observed in the pressure history results. A detailed discussion regarding the fluid viscosity and its shear-stress diagrams are also included.
%U https://www.sv-jme.eu/article/investigation-of-non-newtonian-fluid-effects-during-transient-flows-in-a-pipeline/
%0 Journal Article
%R 10.5545/sv-jme.2015.2787
%& 105
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 62
%N 2
%@ 0039-2480
%8 2018-06-27
%7 2018-06-27

Majd, Ali, Ahmad  Ahmadi, & Alireza  Keramat.
"Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline." Strojniški vestnik - Journal of Mechanical Engineering [Online], 62.2 (2016): 105-115. Web.  23 Jan. 2026

TY  - JOUR
AU  - Majd, Ali 
AU  - Ahmadi, Ahmad 
AU  - Keramat, Alireza 
PY  - 2016
TI  - Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2015.2787
KW  - transient pipe flow; generalized Newtonian fluid; shear thinning fluids
N2  - A sudden change in the flow rate brings about significant pressure oscillations in the piping system, known as water hammer (fluid hammer). Unsteady flow of a non-Newtonian fluid due to instantaneous valve closure is studied. Power law and Cross models are used to simulate non-Newtonian effects. Firstly, the appropriate governing equations are derived and then, they are solved by a numerical approach. A fourth-order Runge–Kutta scheme is used for the time integration, and the central difference scheme is employed for the spatial derivatives discretization. To verify the proposed mathematical model and numerical solution, a comparison with corresponding experimental results from the literature are made. The results reveal a remarkable deviation in pressure history and velocity profile with respect to the water hammer in Newtonian fluids. The significance of the non-Newtonian fluid behaviour is manifested in terms of the drag reduction and line packing effect observed in the pressure history results. A detailed discussion regarding the fluid viscosity and its shear-stress diagrams are also included.
UR  - https://www.sv-jme.eu/article/investigation-of-non-newtonian-fluid-effects-during-transient-flows-in-a-pipeline/

@article{{sv-jme}{sv-jme.2015.2787},
	author = {Majd, A., Ahmadi, A., Keramat, A.},
	title = {Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {62},
	number = {2},
	year = {2016},
	doi = {10.5545/sv-jme.2015.2787},
	url = {https://www.sv-jme.eu/article/investigation-of-non-newtonian-fluid-effects-during-transient-flows-in-a-pipeline/}
}

TY  - JOUR
AU  - Majd, Ali 
AU  - Ahmadi, Ahmad 
AU  - Keramat, Alireza 
PY  - 2018/06/27
TI  - Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 62, No 2 (2016): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2015.2787
KW  - transient pipe flow, generalized Newtonian fluid, shear thinning fluids
N2  - A sudden change in the flow rate brings about significant pressure oscillations in the piping system, known as water hammer (fluid hammer). Unsteady flow of a non-Newtonian fluid due to instantaneous valve closure is studied. Power law and Cross models are used to simulate non-Newtonian effects. Firstly, the appropriate governing equations are derived and then, they are solved by a numerical approach. A fourth-order Runge–Kutta scheme is used for the time integration, and the central difference scheme is employed for the spatial derivatives discretization. To verify the proposed mathematical model and numerical solution, a comparison with corresponding experimental results from the literature are made. The results reveal a remarkable deviation in pressure history and velocity profile with respect to the water hammer in Newtonian fluids. The significance of the non-Newtonian fluid behaviour is manifested in terms of the drag reduction and line packing effect observed in the pressure history results. A detailed discussion regarding the fluid viscosity and its shear-stress diagrams are also included.
UR  - https://www.sv-jme.eu/article/investigation-of-non-newtonian-fluid-effects-during-transient-flows-in-a-pipeline/

Majd, Ali, Ahmadi, Ahmad, AND Keramat, Alireza.
"Investigation of Non-Newtonian Fluid Effects  during Transient Flows in a Pipeline" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 62 Number 2 (27 June 2018)