博士生苏博等撰写的科研论文发表在国际权威期刊：Nuclear Engineering and Design。

论文题目：Effect of temperature difference on the thermal mixing phenomenon in a T-junction under inflow pulsation
作者： Bo Su a , Ziliang Zhu a , Xiaoyu Wang a , Hanbing Ke b , Mei Lin a , Qiuwang Wang a,⁎
a School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, PR China
b Science and Technology on Thermal Energy and Power Laboratory, Wuhan 430205, Hubei, PR China
A B S T R A C T
The effects of inlet temperature difference between the main and branch fluids on the flow and thermal mixing characteristics in the T-junction under inflow
pulsation are numerically investigated by large eddy simulation (LES) turbulent model. The inlet velocities of both the main and branch pipes are assumed to be
sinusoidal distribution, which is similar to the rolling condition in the ocean. Thermal mixing between hot and cold fluids with temperature differences of 15 K, 30 K
and 45 K is carried out in the present study. The flow and mixing characteristics, including qualitative and quantitative analyses of temperature and velocity are
studied. The results show that the reverse flow occurs in the unsteady thermal mixing processes due to the effect of inertia force, and the area of reverse flow
decreases as the inlet temperature difference increases. Increasing inlet temperature difference induces a more stable thermal stratification flow with smaller thermal
mixing length and lower temperature gradient. The maximum root mean square (RMS) of temperature fluctuation slightly decreases and shifts to the upper of main
pipe as the inlet temperature difference increases. In addition, the spectral analysis of temperature fluctuation performed by Wavelet Transform (WT) indicates that
the number of frequency peaks decreases as the temperature difference increases. Meanwhile, the main frequencies of wavelet power spectrum densities (WPSDs) for
the lower points (points 1 ~ 3) decrease, while those for the upper points (points 5 ~ 7) increase as the temperature difference increases.

   发表期刊：Nuclear Engineering and Design 363 (2020) 110611，链接网址：https://linkinghub.elsevier.com/retrieve/pii/S0029549320301059