A computational study has been carried out to assess the influence of pressure on the flow behaviors in dense gas-fluidized beds. Therefore the discrete particle simulation approach has been employed to study the regime transitions, local two-phase flow structures and the energy dissipation distribution. The results show that high pressure reduces the incipient fluidization velocity, widens the uniform fluidization regime and leads to a quick transition to the turbulent regime. Particularly it is discovered that high pressure, through enhancing gas-solid interaction and reducing the particle collision frequency, efficiently suppresses formation of large bubbles. As a consequence thereof more uniform gas-solid flow structures are produced leading to particulate fluidization.
|Title of host publication||Proceedings of the 10th Engineering Foundation Conference on Fluidization, Beijing, China|
|Publication status||Published - 20 May 2001|
|Event||10th Engineering Foundation Conference on Fluidization, FLUIDIZATION X - Beijing, China|
Duration: 20 May 2001 → 25 May 2001
|Conference||10th Engineering Foundation Conference on Fluidization, FLUIDIZATION X|
|Period||20/05/01 → 25/05/01|
|Other||May 20-25, 2001|