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JournalISSN: 1678-5878

Journal of The Brazilian Society of Mechanical Sciences and Engineering 

Springer Science+Business Media
About: Journal of The Brazilian Society of Mechanical Sciences and Engineering is an academic journal published by Springer Science+Business Media. The journal publishes majorly in the area(s): Materials science & Machining. It has an ISSN identifier of 1678-5878. Over the lifetime, 4827 publications have been published receiving 41041 citations.


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Journal ArticleDOI
TL;DR: In this article, the effect of Brownian motion on the effective thermal conductivity and viscosity of the nanofluid is calculated by KKL (Koo-Kleinstreuer-Li) correlation, which is then solved numerically by the fourth-order Runge-Kutta integration scheme featuring a shooting technique.
Abstract: The aim of the present paper is to study the nanofluid flow and heat transfer over a stretching porous cylinder. The effective thermal conductivity and viscosity of the nanofluid are calculated by KKL (Koo–Kleinstreuer–Li) correlation. In KKL model, the effect of Brownian motion on the effective thermal conductivity is considered. The governing partial differential equations with the corresponding boundary conditions are reduced to a set of ordinary differential equations with the appropriate boundary conditions using similarity transformation, which is then solved numerically by the fourth-order Runge–Kutta integration scheme featuring a shooting technique. Numerical results for flow and heat transfer characteristics are obtained for various values of the nanoparticle volume fraction, suction parameter, Reynolds number and different kinds of nanofluids. Results show that inclusion of a nanoparticle into the base fluid of this problem is capable to change the flow pattern. It is found that Nusselt number is an increasing function of nanoparticle volume fraction, suction parameter and Reynolds number.

199 citations

Journal ArticleDOI
TL;DR: In this article, a fast and simple (FAS) detection algorithm based on the digital image correlation for measurement of the surface deformation of planar objects is presented, which uses only fine search at the pixel level resolution and surface fitting for sub-pixel level.
Abstract: This paper presents a "fast and simple" (FAS) detection algorithm based on the digital image correlation for measurement of the surface deformation of planar objects. The proposed algorithm uses only fine search at the pixel level resolution and surface fitting for sub-pixel level. Two different specimens are investigated to explore the feasibility of this proposed algorithm. The displacements calculated by the FAS algorithm are compared with the ones obtained from Newton-Raphson method (N-R) and Enhanced Sequential Similarity Detection Algorithm (ESSDA). The results show that the experimental data are in good agreement with the theoretical solution. The proposed algorithm is found to be much faster than Newton-Raphson method with inferior, yet reasonable, accuracy for displacement and strain evaluation in the cases of uniaxial tension and disk under diametrical compression tests.

198 citations

Journal ArticleDOI
TL;DR: In this article, a new first-order shear deformation theory is developed for bending and dynamic behaviors of functionally graded plates, and the number of unknowns of this theory is the least one comparing with the traditional firstorder and the other higher order deformation theories.
Abstract: A new first-order shear deformation theory is developed for bending and dynamic behaviors of functionally graded plates. Moreover, the number of unknowns of this theory is the least one comparing with the traditional first-order and the other higher order shear deformation theories. The equations governing the axial and transverse deformations of functionally graded plates are derived based on the present first-order shear deformation plate theory and the physical neutral surface concept. There is no stretching–bending coupling effect in the neutral surface-based formulation, and consequently, the governing equations and boundary conditions of functionally graded plates based on neutral surface have the simple forms as those of isotropic plates. To examine accuracy of the present formulation, several comparison studies are investigated. It can be concluded that the proposed theory is accurate and simple in solving the static bending and free vibration behaviors of functionally graded plates.

169 citations

Journal ArticleDOI
TL;DR: In this paper, the results of Alumina and CNT (carbon nanotube) nanoparticles blended biodiesel fuel on the performance, emission, and combustion characteristics of a diesel engine were reported.
Abstract: The present study reports the results of Alumina and CNT (carbon nanotube) nanoparticles blended biodiesel fuel on the performance, emission, and combustion characteristics of a diesel engine. The biodiesel is produced from the raw jatropha oil by standard transesterification process, and subsequently, the nanoparticles such as Alumina, CNT, and Alumina–CNT are blended with the biodiesel fuel in the mass fractions of 25 and 50 ppm with the aid of an ultrasonicator. The characterization studies of the nanoparticles such as TEM and XRD are carried out to analyze their morphology. The whole investigation is carried out in a constant speed diesel engine in four phases using neat biodiesel fuel, Alumina blended biodiesel, CNT blended biodiesel, and Alumina–CNT blended biodiesel fuels. The results revealed a considerable enhancement in the brake thermal efficiency and marginal reduction in the harmful emissions for the nanoparticles blended biodiesel fuels compared to those of neat biodiesel fuel. Furthermore, the hot-plate evaporation test confirmed a shorten ignition delay effect, and improved heat transfer rate associated with the nanoparticles blended biodiesel fuels, owing to their enhanced surface area/volume ratio, and heat conduction properties.

162 citations

Journal ArticleDOI
TL;DR: In this paper, the buckling response of higher-order shear deformable nanobeams made of functionally graded piezoelectric (FGP) materials embedded in an elastic foundation was investigated.
Abstract: This paper investigates buckling response of higher-order shear deformable nanobeams made of functionally graded piezoelectric (FGP) materials embedded in an elastic foundation. Material properties of FGP nanobeam change continuously in thickness direction based on power-law model. To capture small size effects, Eringen’s nonlocal elasticity theory is adopted. Employing Hamilton’s principle, the nonlocal governing equations of FGP nanobeams embedded in elastic foundation are obtained. To predict buckling behavior of embedded FGP nanobeams, the Navier-type analytical solution is applied to solve the governing equations. Numerical results demonstrate the influences of various parameters such as elastic foundation, external electric voltage, power-law index, nonlocal parameter and slenderness ratio on the buckling loads of size-dependent FGP nanobeams.

155 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
2023376
2022666
2021566
2020632
2019571
2018575