Lightweight Aggregate Particle Shape Effect on Structural Concrete*

1974 ◽  
Vol 71 (3) ◽  
Keyword(s):  
Particle Shape ◽  
Lightweight Aggregate ◽  
Shape Effect ◽  
Structural Concrete ◽  
Aggregate Particle ◽  
Particle Shape Effect

Exploration of particle shape effect on Cu-H2O nanoparticles over a moving plate

2019 ◽  
Vol 30 (4) ◽  
pp. 1867-1879 ◽  
Author(s):  
Ganesh Kumar K. ◽  
Chamkha Ali J. ◽  
Prasannakumara B.C. ◽  
Jyothi A.M.
Keyword(s):  
Heat Transfer ◽  
Particle Shape ◽  
Nonlinear Thermal Radiation ◽  
Shape Effect ◽  
Moving Plate ◽  
Content Type ◽  
Opposite Trend ◽  
Thermodynamic Performance ◽  
Particle Shape Effect ◽  
Nanoparticle Shapes

Purpose This paper aims to explore particle shape effect on Cu-H2O nanoparticles over a moving plate in the presence of nonlinear thermal radiation. To characterize the effect, particle shape and viscous dissipation are considered. Convergent solutions for the resulting nonlinear systems are derived and the effects of embedded parameters of interest on velocity and temperature field are examined. Design/methodology/approach The Runge–Kutta–Fehlberg fourth-fifth order method along with shooting technique is used to solve the governing equations (6) and (7) with boundary conditions (8). A suitable finite value of η∞ is considered in such a way that the boundary conditions are satisfied asymptotically. Findings The results show an increase in both the heat transfer and thermodynamic performance of the system. However, among the three nanoparticle shapes, disk shape exhibited better heat transfer characteristics and heat transfer rate. On the other hand, the velocity profile enhances with increasing values of ϕ in the first solution, but the opposite trend was found in the second solution. Originality/value The present paper deals with an exploration of particle shape effect on Cu-H2O nanoparticles over a moving plate in the presence of nonlinear thermal radiation. To characterize the effect, particle shape and viscous dissipation are considered. Convergent solutions for the resulting nonlinear systems are derived and the effects of embedded parameters of interest on velocity and temperature field are examined. The skin friction coefficient and Nusselt number are numerically tabulated and discussed. The results show an increase in both heat transfer and thermodynamic performance of the system. However, among the three nanoparticle shapes, disk shape exhibited better heat-transfer characteristics and heat-transfer rate. On the other hand, the velocity profile enhances with increasing values of ϕ in the first solution, but the opposite trend was found in the second solution.

Particle shape effect on hydrodynamics and heat transfer in spouted bed: A CFD–DEM study

Particuology ◽  
2021 ◽  
Author(s):  
Dianyu E ◽  
Peng Zhou ◽  
Suya Guo ◽  
Jia Zeng ◽  
Jiaxin Cui ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Particle Shape ◽  
Shape Effect ◽  
Spouted Bed ◽  
Particle Shape Effect

Particle shape effect on thermal conductivity and shear wave velocity in sands

2017 ◽  
Vol 12 (3) ◽  
pp. 615-625 ◽  
Author(s):  
Changho Lee ◽  
Hyoung Suk Suh ◽  
Boyeong Yoon ◽  
Tae Sup Yun
Keyword(s):  
Thermal Conductivity ◽  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Particle Shape ◽  
Shape Effect ◽  
Particle Shape Effect
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