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Table 2 Differently defined Brownian velocities and heat propagation velocities, and their magnitudes calculated for the range from 20 to 71°C

From: A new heat propagation velocity prevails over Brownian particle velocities in determining the thermal conductivities of nanofluids

Author

Velocity model

Calculated velocity (m/s)

Brownian velocity of nanoparticles [26]

0.055-0.160

Brownian velocity of nanoparticles [27]

0.0012-0.0035

Brownian velocity of nanoparticles [26]

0.249-0.270

Brownian velocity of water molecules [26]

6.710-19.534

Sound propagation velocity in water [45]

1480-1555

Heat propagation velocity [Present model, Equation 5]

950-2250

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