航空学报 > 2024, Vol. 45 Issue (12): 129188-129188   doi: 10.7527/S1000-6893.2023.29188

NNW⁃ICE软件的三维结冰模型及精度验证

陈宁立, 易贤, 王强(), 任靖豪   

  1. 中国空气动力研究与发展中心 低速空气动力研究所,绵阳 621000
  • 收稿日期:2023-06-16 修回日期:2023-07-21 接受日期:2023-07-25 出版日期:2024-06-25 发布日期:2023-08-04
  • 通讯作者: 王强 E-mail:wangqiang@cardc.cn
  • 基金资助:
    国家自然科学基金(12202471);四川省自然科学基金(2023NSFSC1332)

Three⁃dimensional model for ice accretion in NNW⁃ICE software and validation of its precision

Ningli CHEN, Xian YI, Qiang WANG(), Jinghao REN   

  1. Low Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China
  • Received:2023-06-16 Revised:2023-07-21 Accepted:2023-07-25 Online:2024-06-25 Published:2023-08-04
  • Contact: Qiang WANG E-mail:wangqiang@cardc.cn
  • Supported by:
    National Natural Science Foundation of China(12202471);Natural Science Foundation of Sichuan Province(2023NSFSC1332)

摘要:

结冰现象严重危害飞行器的飞行安全,而数值模拟是研究结冰的重要手段之一。NNW-ICE软件是一款由中国空气动力研究与发展中心开发的中国完全自主可控的结冰数值模拟软件。该软件中的三维结冰相变模型相比于传统的SWIM、Myers模型增加考虑了表面接触角对水膜流动的影响,且能量方程中增加考虑了伴有蒸发现象的霜冰结冰。数值计算方法方面,软件采用有限体积法对方程进行离散,拓展了模型对于复杂几何构型的非结构网格的适用性,并且集成了一阶显式、四阶四步龙格库塔-显式、一阶隐式、二阶一步龙格-库塔隐式共4个求解器。本文还采用了冰风洞试验结果、商业软件FENSAP-ICE计算结果对软件精度进行了验证。结果表明:NNW-ICE软件的计算结果与冰风洞试验结果吻合均较好,且精度总体优于FENSAP-ICE软件。

关键词: NNW-ICE软件, 计算方法, 水膜流动, 结冰相变, 结冰软件

Abstract:

Icing is a serious threat to the flight safety of aircraft, and numerical simulation is one of the important methods for studying icing. The NNW-ICE software is a completely independent and controllable icing numerical simulation software developed by China Aerodynamics Research and Development Center. The three-dimensional icing model in the software additionally considers the rime ice accretion with evaporation in the energy equation and the influence of surface contact angles on water film flow compared with traditional Shallow Water Icing Model (SWIM) and Myers icing models. In terms of numerical calculation methods, the software uses the finite volume method to discretize equations, expands the applicability of the model to unstructured grids of complex geometries, and integrates multiple solvers such as first-order explicit solver, fourth-order four-step Runge-Kutta explicit solver, first-order implicit solver, and second-order one-step Runge-Kutta implicit solver. This study also verifies the accuracy of the software with ice wind tunnel test results and results calculated by the commercial software FENSAP-ICE. The results of NNW-ICE are in good agreement with the experimental results, and the overall accuracy is better than that of the FENSAP-ICE software.

Key words: NNW-ICE software, computational scheme, water film flow, ice accretion, icing software

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