A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Numerical simulation analysis method for snow melting and deicing of road
The invention belongs to the technical field of computer numerical simulation, and relates to a numerical simulation analysis method for road snow melting and deicing based on a CFD-DEM coupling model, which comprises the following steps: 1) generating a corresponding particle composition discrete element road model, and endowing concrete and asphalt with different micromechanical parameters and thermodynamic parameters to the model; 2) establishing an ice model and setting ice parameters, establishing a non-constant heat transfer equation of a control volume in the ice model, and representing the proportion of the control volume in a liquid form in the heat conduction process by using a liquid fraction beta; and 3) updating the liquid fraction beta, determining the change of the volume of the ice model according to the updated value of the liquid fraction beta, and providing a basis for road snow melting and deicing analysis according to the change. According to the numerical simulation analysis method for road snow melting and deicing, the optimal control and solution strategy about road snow melting and deicing can be formulated under different conditions.
本发明属于计算机数值模拟技术领域，涉及一种基于CFD‑DEM耦合模型的道路融雪化冰的数值模拟分析方法，包括：1）生成相应的颗粒组成离散元道路模型，并对该模型赋予混凝土及沥青不同的微观力学参数和热力学参数；2）建立冰模型并设置冰参数，建立冰模型中控制体积的非定常数传热方程，利用液体分数β表示热传导过程中控制体积中以液体形式存在的比例；3）更新液体分数β，并以更新后的液体分数β的值来确定冰模型体积的变化，根据该变化为道路融雪化冰分析提供依据。本发明提供了一种能在不同的条件下制定关于道路融雪化冰的最优控制及解决策略的道路融雪化冰的数值模拟分析方法。
Numerical simulation analysis method for snow melting and deicing of road
The invention belongs to the technical field of computer numerical simulation, and relates to a numerical simulation analysis method for road snow melting and deicing based on a CFD-DEM coupling model, which comprises the following steps: 1) generating a corresponding particle composition discrete element road model, and endowing concrete and asphalt with different micromechanical parameters and thermodynamic parameters to the model; 2) establishing an ice model and setting ice parameters, establishing a non-constant heat transfer equation of a control volume in the ice model, and representing the proportion of the control volume in a liquid form in the heat conduction process by using a liquid fraction beta; and 3) updating the liquid fraction beta, determining the change of the volume of the ice model according to the updated value of the liquid fraction beta, and providing a basis for road snow melting and deicing analysis according to the change. According to the numerical simulation analysis method for road snow melting and deicing, the optimal control and solution strategy about road snow melting and deicing can be formulated under different conditions.
本发明属于计算机数值模拟技术领域，涉及一种基于CFD‑DEM耦合模型的道路融雪化冰的数值模拟分析方法，包括：1）生成相应的颗粒组成离散元道路模型，并对该模型赋予混凝土及沥青不同的微观力学参数和热力学参数；2）建立冰模型并设置冰参数，建立冰模型中控制体积的非定常数传热方程，利用液体分数β表示热传导过程中控制体积中以液体形式存在的比例；3）更新液体分数β，并以更新后的液体分数β的值来确定冰模型体积的变化，根据该变化为道路融雪化冰分析提供依据。本发明提供了一种能在不同的条件下制定关于道路融雪化冰的最优控制及解决策略的道路融雪化冰的数值模拟分析方法。
Numerical simulation analysis method for snow melting and deicing of road
道路融雪化冰的数值模拟分析方法
LIU YIMING (author) / YANG LIU (author) / XIAO HENGLIN (author) / MA QIANG (author) / CHEN ZHI (author) / LI LIHUA (author) / LI WENTAO (author) / PEI YAOYAO (author) / ZHOU XINLONG (author) / YU HANLONG (author)
2022-11-04
Patent
Electronic Resource
Chinese
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