摘要
本文应用应力代数及两种低雷诺数的湍流数学模型对二维重叠式排取水口工程进行了数值计算。计算结果表明:应力代数高雷诺数及双方程低雷诺数的湍流数学模型的计算结果是合理的。流场、温度场及热水回归率与出口密度佛氏数的关系的计算结果均与实验结果一致。但应力代数低雷诺数的湍流数学模型的计算不太合理,流场、温度场的计算结果与实验结果仍有一些不可忽视的差距。因此,对该模型的模拟技术尚待今后进一步改进。
This paper presents an Algebraic Stress Model (ASM) and two versions of Low Reynolds-Number Model (LRNM) for simulating cooling water circulation in an intake-under-outlet system. Predictions are conducted from the wall surface to the fully developed turbulent region. It has been shown that prediction results obtained by ASM in high-Reynolds-number cases and by k-eε two-equation model with low-Reynolds-number correction (Low II Model) are reasonable. Calculated velocity and temperature distributions as well as the η vs.F△0 curre agree well with the experimental data. But predicted results obtained by the algebraic stress model with simple low-Reynolds-number correction (Low Ⅰ Model) have shown large discrepancies with experiments. It is thus indicated that some new simulation techniques are required for further improvement of the model.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1990年第4期42-52,共11页
Chinese Journal of Hydrodynamics
关键词
湍流
数学模型
取水口
重叠式
turbulent flow, water circulation. turbulent model.
