Large eddy simulation of thermal mixing under boiling water reactor conditions

Q_and_Uz/Uz_AVG__view_k__0.6,0.73__Q_0.5.png: time-averaged Q-criterion isocontours colored by time-averaged axial velocity.
k = view number.
k = 1: at θ = 90°.
k = 2: at θ = 180°.
k = 3: at θ = 270°.
k = 4: at θ = 360°.
Q = 0.5 s^-2.
Start time t_0 = 19.2 s.
17.5e-3 m ≤ (x^2 + y^2)^0.5 ≤ 22.5e-3 m.
0.60 m ≤ z ≤ 0.73 m.
These figures help to interpret Fig. 9 in the related paper.

U_and_T/i__time_j__z_0.67.png: field i at time j, in s, at z = 0.67 m.
i = T (i.e., temperature) or U (i.e., velocity magnitude).
LES results.
Water domain.
These figures are part of Figs. 7 and 8 in the related paper.
The in-plane velocity vectors can be clearly seen here.

HMS1.pdf: Hilbert-Huang marginal spectra of inner-surface temperatures at (90°, 0.67 m), (270°, 0.67 m), (360°, 0.67 m). Experimental data.

mean(dimensionless T)_exp.pdf: time-averaged dimensionless inner-surface temperatures in the mixing region.
Experimental values.
mean(dimensionless T)_LES.pdf: time-averaged dimensionless inner-surface temperatures in the mixing region.
LES values.
mean(dimensionless T)_exp.pdf and mean(dimensionless T)_LES.pdf prove that it is challenging to compare LES and experimental temperatures in terms of local means.

strr_range.pdf: radial stress range.
sttt_range.pdf: hoop stress range.
stzz_range.pdf: axial stress range. Same as Fig. 14d.
Stresses in the vicinity of the inner surface, at 0.993 R_io. Values in Pa. Start time t_0 = 19.2 s.
Axial and hoop stresses show similar ranges.