Novel drag and Nusselt number models based on direct numerical simulations of a bidisperse gas–solid system

• Published in: AIChE journal Vol. 70; no. 5
• Main Authors: Wang, Dong, Wang, Shuai, Jin, Tai, Luo, Kun, Fan, Jianren
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 01.05.2024; American Institute of Chemical Engineers
• Subjects: Arrays; Computational fluid dynamics; Direct numerical simulation; Discrete element method; Drag; drag force model; Fluid dynamics; Fluid flow; Gas-solid systems; Heat transfer; Hydrodynamics; immersed boundary method; Mathematical models; Nusselt number; Nusselt number model; particle‐resolved direct numerical simulation; polydisperse gas‐solid flow; Sensitivity analysis

Flow and heat transfer in a bidisperse gas–solid system with freely moving spheres  are simulated by particle‐resolved direct numerical simulation (PR‐DNS). Gas–solid coupling is enforced by the direct‐forcing immersed boundary method. Compard with the DNS database, it is found that the existing pol...