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• MakaleAçık Erişim2023Scopus SJRQ1/r/munzur/2384
  Radiation mechanism on dissipative ternary hybrid nanoliquid flow through rotating disk encountered by Hall currents: HAM solution

  Shamshuddin, M.D.; Akkurt, Nevzat; Saeed, Anwar; Kumam, Poom

  The energy transition to enhance heat transport during the flow of ternary hybrid nanofluid comprised of Copper (Cu), Iron oxide (Fe3O4), Silicon dioxide (SiO2) nanoparticles and Polymer as base liquid over a revolving disk surface has been reported. From the several existing techniques, adding nanoparticles to standard working fluids is an effective approach that might dramatically improve the rate of heat transfer. The Hall and radiation impacts are also considered. A mathematical model is developed by assuming the flow as incompressible and purely radial in a cylindrical coordinate system and appropriate similarity variables are introduced for problem simplification and dimensionless analysis. The solution of complex generated PDEs was calculated using semi analytical method known as Homotopy Analysis Method (HAM) after translating them into corresponding ODEs. It has been observed that the consequences of thermal radiation, dissipation term, unsteadiness and rotation parameters boost the energy transmission rate and enhances the heat transfer rate of tri hybrid nanofluids. However, Cu-Fe3O4 nanoparticles in the base fluid remarkably magnifies the energy transmission rate. The unitary ternary hybrid nanofluid (Cu, Fe3O4, SiO2) has higher velocity profiles as compared to unitary nano fluid (Cu) and hybrid nano-fluid (Cu-Fe3O4).

  AtıfScopus133·WoS121·OpenAlex138

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• DüzeltmeAçık Erişim2023Scopus SJRQ1/r/munzur/2271
  Corrigendum to “Modeling and numerical simulation of non-Newtonian arterial blood flow for mild to severe stenosis” [Alex. Eng. J. 72 (2023) 195–211, (S1110016823002594), (10.1016/j.aej.2023.03.088)]

  Nadeem, Sohail; Ali, Shahbaz; Akkurt, Nevzat; Bechir Ben Hamida, Mohamed; Almutairi, Shahah; Ghazwani, Hassan Ali; Eldin, Sayed M.; Khan, Zareen A.; Al-Shafay, A.S.

  The authors regards, In the original article, in Ref. [16], the citation was incorrectly stated as: H. Liu et al., 3D printing of artificial blood vessel: study on multi-parameter optimization design for vascular molding effect in alginate and gelatin, Micromachines (2017) 8. However, upon thorough review and verification, the authors have discovered that the correct citation should be as follows: V. Carvalho, N. Rodrigues, R. Ribeiro, P.F. Costa, R.A. Lima, S.F.C.F. Teixeira, 3D printed biomodels for flow visualization in stenotic vessels: An experimental and numerical study, Micromachines, vol. 11, no. 6, doi: 10.3390/mi11060549. The authors deeply apologize for this oversight and any confusion it may have caused to the readers and the scholarly community. It is crucial to ensure the accuracy and integrity of their citations, and they sincerely regret any inconvenience this may have caused.

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• MakaleAçık Erişim2023Scopus SJRQ1/r/munzur/1650
  Modeling and numerical simulation of non-Newtonian arterial blood flow for mild to severe stenosis

  Nadeem, Sohail; Ali, Shahbaz; Akkurt, Nevzat; Ben Hamida, Mohamed Bechir; Almutairi, Shahah; Ali Ghazwani, Hassan; Eldin, Sayed M; Khan, Zareen A.; Al-Shafay, A.S.

  The fundamental cause of coronary heart disease is thought to be atherosclerosis. Blood flow in arteries under plaque formation is widely studied using both experimental and theoretical methods in literature. This paper presents a comprehensive study on the mathematical modelling and numerical simulation of non-Newtonian blood flow in an idealized stenosed artery. Non-Newtonian behavior of blood flow is assumed by Casson and Quemada fluid models. An analysis is performed for four forms of stenosis, 50%, 60%, 70%, and 80%, which are defined by a narrowing of the artery's diameter. The mathematical model for non-Newtonian fluid transport is presented in the form of highly nonlinear coupled partial differential equations. A finite-volume approach is used to solve the system of equations numerically. The solutions are obtained using a hybrid mesh with hexahedron and tetrahedron control volumes. Numerical solutions are validated first with experimental results from the literature for a Newtonian fluid, and then the results are extended to non-Newtonian fluid models. It can be observed that the non-Newtonian nature of the fluid model influences flow dynamics and is a significant aspect to consider for arteries with small diameter. The velocity and pressure drop rise as the degree of stenosis develops. Wall shear is substantially larger in stenotic passages and severity of stenosis is directly related with this increasing behavior.

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  AtıfScopus32·OpenAlex33

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