发布时间：2025-07-22

文章标题：祝贺课题组冯艺伟博士的自然分层蓄冷水罐性能提升相关论文被期刊《Energy Conversion and Management》收录

内容：

课题组冯艺伟博士的研究论文Performance Improvement of Thermally Stratified Storage Tank via Applying Radial Perforated Inlet Structure and Dynamic Flow Control被期刊《Energy Conversion and Management》收录。论文摘要如下：

Geometric optimization and fluid property control are primary approaches for improving thermal stratification efficiency in thermally stratified storage tanks (TSSTs). However, most existing studies focus on static conditions optimization, neglecting actual dynamic operational conditions. This study proposes a radial perforated inlet structure and innovatively investigates the dynamic flow control to strengthen thermal stratification. The inlet structure disperses the concentrated inlet jets into low-velocity streams, reducing the local Reynolds number while increasing Richardson and Stratification numbers, thereby suppressing turbulent mixing. This achieved 22.4% and 12.0% reductions in maximum and stable thermocline thickness. A phase-matching strategy between flow fluctuations and thermocline development stages was established: aligning low-flow periods with critical development stages, including initial/late formation and early stabilization stages, promotes thinner thermocline formation. Under equivalent periodic-mean flow rates, sinusoidal flow achieves 16.7% and 26.4% reductions in stable and maximum thermocline thickness compared to cosine modulation, and lowering stable thickness by 13.8% compared to steady-state conditions. Adjusting flow frequency also affects thermocline development. In sinusoidal flows, reducing the frequency makes the flow closer to steady-state conditions, favoring stable upward thermocline migration. Extending the interval from 300s to 900s reduces stable thickness from 1.94m to 1.81m. For cosine flows, decreasing the interval mitigates wrinkling in the lower thermocline and accelerates upward migration while moderating thickening effects. A stable thickness reduction from 2.45 m to 2.39 m by reducing the control interval from 900s to 300s is achieved. These findings establish a theoretical framework for dynamic design optimization and flexible control of TSST.