Bubble Swarm Rise Velocity in Fluidized Beds.

0459872 - ÚCHP 2017 RIV GB eng J - Článek v odborném periodiku
Punčochář, Miroslav - Růžička, Marek - Šimčík, Miroslav
Bubble Swarm Rise Velocity in Fluidized Beds.
Chemical Engineering Science. Roč. 152, OCT 2 (2016), s. 84-94. ISSN 0009-2509. E-ISSN 1873-4405
Grant CEP: GA ČR(CZ) GA15-05534S
Institucionální podpora: RVO:67985858
Klíčová slova: bubbling fluidized bed * gas-solid * bubble swarm velocity
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
Impakt faktor: 2.895, rok: 2016

New formulas are suggested for the swarm speed of cap-shaped gas bubbles collectively rising within a gas-solid fluidized bed. Their derivation stems from comparing the added mass of a single bubble and a swarm of bubbles. For different flow conditions, there are different trends in the dependence of the added mass on the bubble concentration (voidage). This variance translates into different predictions of the suggested swarm speed formulas. This difference is explained in terms of the geometrical configuration of bubbles inside the bed.
Trvalý link: http://hdl.handle.net/11104/0260040