TY - GEN
T1 - CFD simulations of complex fluid flow in gas-solid fluidized bed using modified k-ϵ turbulence models
AU - Daryus, Asyari
AU - Siswantara, Ahmad Indra
AU - Budiarso,
AU - Sumartono, Budi
AU - Gunadi, Gun Gun R.
AU - Pujowidodo, Hariyotejo
AU - Widiawaty, Candra D.
N1 - Publisher Copyright:
© 2019 Author(s).
PY - 2019/12/10
Y1 - 2019/12/10
N2 - This work studies the effect of kinetic Prandtl value in the k-ϵ turbulence model transport equation on the characteristics of fluidized bed fluid flow. The research was conducted using CFD simulation method. Three kinetic Prandtl values were chosen, namely 0.8; 0.9 and 1.1; plus 1 from the default value of the turbulent model. The parameters observed were the difference in pressure in the bed, and several turbulence parameters, i.e. the rate of dissipation, the effective viscosity of the gas and the particles. The turbulent model with k-Prandtl of 0.9 gives the most accurate results at the superficial velocity range of 0.40 m/s - 0.70 m/s, while k-Prandtl of 1.1 gives most accurate results at the superficial velocity range of 0.80 m/s - 0.90 m/s. It is found that the decrease in the k-Prandtl value causes the decrease in the dissipation rate; same phenomena with effective viscosity of gas. Meanwhile, there is no significant change in the particle's effective viscosity with the change of k-Prandtl value.
AB - This work studies the effect of kinetic Prandtl value in the k-ϵ turbulence model transport equation on the characteristics of fluidized bed fluid flow. The research was conducted using CFD simulation method. Three kinetic Prandtl values were chosen, namely 0.8; 0.9 and 1.1; plus 1 from the default value of the turbulent model. The parameters observed were the difference in pressure in the bed, and several turbulence parameters, i.e. the rate of dissipation, the effective viscosity of the gas and the particles. The turbulent model with k-Prandtl of 0.9 gives the most accurate results at the superficial velocity range of 0.40 m/s - 0.70 m/s, while k-Prandtl of 1.1 gives most accurate results at the superficial velocity range of 0.80 m/s - 0.90 m/s. It is found that the decrease in the k-Prandtl value causes the decrease in the dissipation rate; same phenomena with effective viscosity of gas. Meanwhile, there is no significant change in the particle's effective viscosity with the change of k-Prandtl value.
UR - http://www.scopus.com/inward/record.url?scp=85076748271&partnerID=8YFLogxK
U2 - 10.1063/1.5138263
DO - 10.1063/1.5138263
M3 - Conference contribution
AN - SCOPUS:85076748271
T3 - AIP Conference Proceedings
BT - Innovative Science and Technology in Mechanical Engineering for Industry 4.0
A2 - Djanali, Vivien
A2 - Mubarok, Fahmi
A2 - Pramujati, Bambang
A2 - Suwarno, null
PB - American Institute of Physics Inc.
T2 - 4th International Conference on Mechanical Engineering: Innovative Science and Technology in Mechanical Engineering for Industry 4.0, ICOME 2019
Y2 - 28 August 2019 through 29 August 2019
ER -