The temperature distribution in the channel of moving pebble beds with the local internal heat generation is important factor for design and operation of many devices including heat exchangers

reactors and dryers. The particle velocity is the key for the temperature distribution and heat transfer in the channel of moving pebble beds with the local internal heat generation. The correlation between the particle velocity and the outlet average temperatures (T1 and T2) of the internal heat generation zone and channel were theoretically analyzed. The three-dimensional numerical simulation was performed on FLUENT using the k-e model for the same physical model of the theoretical analysis. The outlet average temperature of the channel is agreed with the theoretical correlation and the relative error is lower than 8%. Based on the three cases of particle velocities

the outlet temperature of the local internal heat generation zone

the channel outlet temperature and the channel centre temperature are compared

and the temperature distribution characteristics of whole channel are predicted and analyzed. The results show that the channel temperature increased first then decreased along the vertical axis downward

and the temperature maximum was located the outlet of the internal heat generation zone. The outlet temperature of internal heat generation zone

the channel outlet temperature

and the center temperature decreased with the particle velocity increasing.