COMSOL periodic boundary conditions

Part of this answer quotes GPT, GPT_Pro to solve the problem better
Yes, COMSOL can use periodic boundary conditions to simulate the deformation of a single cell arrangement at infinite cycles. Periodic boundary conditions refer to copying the boundary coordinates of one model and applying them to the boundary of another model to achieve infinite repetition of unicellular permutations. In COMSOL, correlations between different models can be established, for example by copying coordinates defined in the first model into the other model, so that infinite repetition of unicellular permutations can be achieved using the same boundary conditions.

// 代码示例
// 定义第一个模型的边界坐标
x1 = 0;  
y1 = 0;
// 定义第二个模型的边界坐标
x2 = 0;  
y2 = 1;
// 根据上面定义的边界条件，将第一个模型中定义的坐标复制到另一个模型中
x2 = x1;
y2 = y1 + 1;

In addition, COMSOL can also be bound to a function, vector field, or matrix field to realize the deformation of a cell in an infinite periodic arrangement. For example, you can use a binding function to define cell displacement, which is then passed as input to the grid cell; Alternatively, use vector fields to define displacement fields and pass them as input to the cell location; Finally, a matrix field can also be used to define the location field and pass it as input to the cell location. All these methods can be used to solve periodic cell deformation numerically by COMSOL.
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