| 麻子涵，韩盼盼，尤云祥.转捩模型的离散格式对计算结果的影响研究[J].海洋工程,2025,(5):39~47 |
| 转捩模型的离散格式对计算结果的影响研究 |
| Research on the influence of discrete schemes of transition models on numerical results |
| 投稿时间：2024-06-13 修订日期：2024-09-02 |
| DOI：10.16483/j.issn.1005-9865.2025.05.004 |
| 中文关键词: 转捩模型 离散格式 SST γ-Reθ湍流模型 SST γ湍流模型 |
| 英文关键词:transition model discrete scheme SST γ-Reθ turbulence model SST γ turbulence model |
| 基金项目:长三角科技创新共同体联合攻关“新能源汽车自主工业软件开发”项目（SQ2024CSJGG0020） |
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| 中文摘要: |
| 离散格式的选取对转捩模型的计算结果具有显著的影响，尤其会影响转捩点的预测。目前，针对这一现象的研究文献尚较少。为此，基于经典的转捩模型SST γ-Reθ及SST γ开展数值计算，并对经典研究算例T3A-、T3A及13.3°攻角A翼型绕流分别进行讨论，系统地探究离散格式对转捩模型计算结果的影响。结合试验结果，对壁面摩擦阻力系数分布进行分析，评估不同离散格式在转捩过程预测中的优劣。研究表明，根据离散格式的影响程度，物理量可分为3类，即速度、湍流量及转捩量。其中，速度对离散格式非常敏感，应采用二阶格式；湍流量中的湍动能对离散格式不敏感，比耗散率对离散格式较为敏感，分别推荐使用一阶及二阶格式；转捩量对离散格式不敏感，推荐使用一阶格式。 |
| 英文摘要: |
| The choice of discrete scheme has a significant impact on the numerical results of transition models, particularly in predicting the transition point. However, this issue has received little attention in the existing literature. Therefore, a numerical investigation is conducted based on two classical transition models—SST γ-Reθ and SST γ. Three representative benchmark cases, T3A-, T3A, and the A-airfoil at a 13.3° angle of attack, are selected to systematically explore the influence of discrete schemes on the numerical results of transition models . Comparisons with experimental data are performed to analyze the distribution of wall friction coefficients and evaluate the predictive performance of different schemes. The research shows that physical quantities can be divided into three categories according to the influence degree of the discrete scheme: velocity, turbulence quantities, and transition quantities. Velocity is highly sensitive and requires a second-order discrete scheme. For turbulence quantities, turbulent kinetic energy is relatively insensitive and a first-order discrete scheme is sufficient, whereas the specific dissipation rate shows moderate sensitivity, for which a second-order discrete scheme is recommended. Transition quantities are generally insensitive, and a first-order discrete scheme is preferred. |
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