TY - GEN
T1 - MODAL DECOMPOSITION OF THE FLOW IN A RANDOMLY PACKED PEBBLE BED WITH DIRECT NUMERICAL SIMULATION
AU - Yildiz, Mustafa Alper
AU - Merzari, Elia
AU - Nguyen, Thien Duy
AU - Hassan, Yassin A.
N1 - Publisher Copyright:
© ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics.All rights reserved.
PY - 2020
Y1 - 2020
N2 - This paper presents a direct numerical simulation of the flow in a randomly packed pebble bed. Nek5000, a spectral-element computational fluid dynamics code, was used to develop DNS fluid flow data, including first- and second-order statistics for an experimental randomly packed pebble bed. The flow domain consisted of 147 pebbles enclosed by a bounding wall. In the presented work, the Reynolds number is 1700 based on the hydraulic diameter and interstitial velocity. First- and second-order statistics were compared with the experimental data. POD analysis was presented in order to identify dominant flow structures.
AB - This paper presents a direct numerical simulation of the flow in a randomly packed pebble bed. Nek5000, a spectral-element computational fluid dynamics code, was used to develop DNS fluid flow data, including first- and second-order statistics for an experimental randomly packed pebble bed. The flow domain consisted of 147 pebbles enclosed by a bounding wall. In the presented work, the Reynolds number is 1700 based on the hydraulic diameter and interstitial velocity. First- and second-order statistics were compared with the experimental data. POD analysis was presented in order to identify dominant flow structures.
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M3 - Conference contribution
AN - SCOPUS:85141528904
T3 - ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics
SP - 402
EP - 412
BT - ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics
PB - American Nuclear Society
T2 - 2020 International Topical Meeting on Advances in Thermal Hydraulics, ATH 2020
Y2 - 20 October 2020 through 23 October 2020
ER -