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Cylindrical coordinate system (m) |
|
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Constant mass flux velocity (m/s) |
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Constant ambient temperature (K) |
|
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Pressure (Kg/m. s2) |
|
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Thermal conductivity (W/(m. K)) |
|
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Radiative heat flux |
|
|
Prandtl number |
|
|
Temperature of the fluid (K) |
|
|
Specific heat at constant pressure (J/Kg. K) |
|
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Dimensionless velocity stream function |
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Constant surface temperature (K) |
|
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Mass suction parameter |
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Rotating velocity of the disk (m/s) |
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Radiation parameter |
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Surface velocity of the disk (m/s) |
|
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Local Nusselt number |
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Free-stream velocities (m/s) |
|
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Skin friction coefficient along the radial direction |
|
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Constant parameter having units (m. s)−1
|
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Skin friction coefficient along the azimuthal direction |
|
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Velocity components (m/s) |
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Local Reynolds number |
|
Greek Symbols
|
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|
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Thermal diffusivity (m2/s) |
|
|
Kinematic viscosity (m2/s) |
|
|
Rotating disk parameter |
|
|
Tangential momentum accommodation coefficient |
|
|
Coefficient of the main free path |
|
|
Dimensionless temperature |
|
|
Thermal accommodation coefficient |
|
|
Constant angular velocity (m/s) |
|
|
Specific heat ratio |
|
|
Stretching/Shrinking parameter |
|
|
Stefan-Boltzmann constant (W/(m2. K4)) |
|
|
Absolute viscosity (N. s/m2) |
|
|
Pseudo-similarity variable |
|
|
Density (kg/m3) |
|
|
Mean absorption constant |
|
|
Stream function |
|
|
Velocity slip parameter |
|
|
Solid volume fraction of nanoparticles |
|
|
Temperature slip parameter |
|
Acronyms
|
|
| Cu |
Copper |
| PDEs |
Partial differential equations |
| H2O |
Water |
| ODEs |
Ordinary differential equations |
| bvp4c |
Boundary value problem of the fourth order |
| Al2O3
|
Alumina |
| 2D, 3D |
Two and three-dimensional |
| BCs |
Boundary conditions |
| N-S |
Navier-Stokes equation |
| ICs |
Initial conditions |
|
Subscripts
|
|
|
|
Hybrid nanofluid |
| 1,2 |
Hybrid nanoparticles (Cu and Al2O3) |
|
|
Working base fluid |
|
|
Wall boundary condition |
|
|
Far-field condition |
|
Superscript
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|
′
|
Derivative with respect to
|