# 微积分网课代修|偏微分方程代写Partial Differential Equation代考|CME204 Solve Problems Using Legacy PDEModel Objects

• 单变量微积分
• 多变量微积分
• 傅里叶级数
• 黎曼积分
• ODE
• 微分学

## 微积分网课代修|偏微分方程代写Partial Differential Equation代考|Solve Problems Using Legacy PDEModel Objects

1 Put your problem in the correct form for Partial Differential Equation Toolbox solvers. For details, see “Equations You Can Solve Using Legacy Functions” on page 1-3. If you need to convert your problem to divergence form, see “Put Equations in Divergence Form” on page 2-62.
2 Create a PDEModel model container. For scalar PDEs, use createpde with no arguments.
model = createpde;
If $N$ is the number of equations in your system, use createpde with input argument N.
model = createpde $(\mathrm{N}) ;$
3 Import the geometry into model. For details, see “Create and View 3-D Geometry” on page 2-47 or “Create 2-D Geometry” on page 2-17. For example:
importGeometry (model, geometry.stl); \% importGeometry for 3 -D
geometryFromEdges (model,g); \% geometryFromEdges for $2-\mathrm{D}$
4 View the geometry so that you know the labels of the faces. To see labels of a 3-D model, you might need to rotate the model, or make it transparent, or zoom in on it. See “Create and View 3-D Geometry” on page 2-47. For a 2-D example, see “Identify Boundary Labels” on page 2-168. For example:
pdegplot(model, FaceLabels, on) \% FaceLabels for $3-\mathrm{D}$ pdegplot(model, EdgeLabels, on) \% EdgeLabels for 2-D Create the boundary conditions. For details, see “Specify Boundary Conditions Objects” on page 2-179. For example: applyBoundaryCondition (model, face, $[2,3,5], u,[0,0]) ; \%$ face for $3-\mathrm{D}$ applyBoundaryCondition(model, edge, $[1,4], g, 1, q$, eye $(2)$ ) $; \%$ edge for 2-D

## 微积分网课代修|偏微分方程代写Partial Differential Equation代考|Solve Problems Using PDEModel Objects

1 Put your problem in the correct form for Partial Differential Equation Toolbox solvers. For details, see “Equations You Can Solve Using Recommended Functions” on page 1-6. If you need to convert your problem to divergence form, see “Put Equations in Divergence Form” on page 2-62.
2 Create a PDEModel model container. For scalar PDEs, use createpde with no arguments.
model = createpde ()$;$
If $N$ is the number of equations in your system, use createpde with input argument N.
model = createpde $(\mathrm{N}) ;$
3 Import the geometry into model. For details, see “Create and View 3-D Geometry” on page $2-47$ or “Create 2-D Geometry” on page 2-17. For example:
importGeometry (model, geometry.stl ); \% importGeometry for 3-D
geometryFromEdges (model,g); \% geometryFromEdges for $2-D$
4 View the geometry so that you know the labels of the boundaries. To see labels of a 3-D model, you might need to rotate the model, or make it transparent, or zoom in on it. See “Create and View 3-D Geometry” on page 2-47. For a 2-D example, see “Identify Boundary Labels” on page 2-168. For example:
pdegplot(model, FaceLabels, on ) \% FaceLabels for 3-D
pdegplot(model, EdgeLabels, on) \% EdgeLabels for 2-D
5 Create the boundary conditions. For details, see “Specify Boundary Conditions Objects” on page 2-179. For example:
applyBoundaryCondition(model, face, $[2,3,5], u,[0,0]) ; \%$ face for $3-D$
applyBoundaryCondition(model, edge, $[1,4], g, 1, q$, eye(2)); \% edge for $2-D$

## 微积分网课代修|偏微分方程代写Partial Differential Equation代考|Solve Problems Using Legacy PDEModel Objects

1 将您的问题以偏微分方程工具箱求解器的正确形式表示。有关详细信息，请参阅第 1-3 页的“您可以使用传统函数求解的方程”。如果您需要将问题转换为散度形式，请参阅第 2-62 页的“将方程放入散度形式”。
2 创建一个 PDEModel 模型容器。对于标量 PDE，请使用不带参数的 createpde。

createpde。model = createpde(ñ);
3 将几何图形导入模型。有关详细信息，请参阅第 2-47 页的“创建和查看 3-D 几何”或第 2-17 页的“创建 2-D 几何”。例如：
importGeometry(model,geometry.stl)；\% importGeometry for 3 -D
geometryFromEdges (model,g); \% geometryFromEdges 为2−D
4 查看几何体以便了解面的标签。要查看 3-D 模型的标签，您可能需要旋转模型、使其透明或放大模型。请参阅第 2-47 页的“创建和查看 3-D 几何”。有关二维示例，请参阅第 2-168 页的“识别边界标签”。例如：
pdegplot(model, FaceLabels, on) \% FaceLabels for3−Dpdegplot(model, EdgeLabels, on) \% EdgeLabels for 2-D 创建边界条件。有关详细信息，请参阅第 2-179 页上的“指定边界条件对象”。例如：applyBoundaryCondition(模型、人脸、[2,3,5],在,[0,0]);%面对3−D应用边界条件（模型，边缘，[1,4],G,1,q， 眼睛(2) ) ;%二维边缘

## 微积分网课代修|偏微分方程代写Partial Differential Equation代考|Solve Problems Using PDEModel Objects

1 将您的问题以偏微分方程工具箱求解器的正确形式表示。有关详细信息，请参阅第 1-6 页的“使用推荐函数可以求解的方程”。如果您需要将问题转换为散度形式，请参阅第 2-62 页的“将方程放入散度形式”。
2 创建一个 PDEModel 模型容器。对于标量 PDE，请使用不带参数的 createpde。

createpde。model = createpde(ñ);
3 将几何图形导入模型。有关详细信息，请参阅第 3 页的“创建和查看 3-D 几何”2−47或“创建二维几何”（第 2-17 页）。例如：
importGeometry（模型，geometry.stl）；\% importGeometry for 3-D
geometryFromEdges (model,g); \% geometryFromEdges 为2−D
4 查看几何图形以便了解边界的标签。要查看 3-D 模型的标签，您可能需要旋转模型、使其透明或放大模型。请参阅第 2-47 页的“创建和查看 3-D 几何”。有关二维示例，请参阅第 2-168 页的“识别边界标签”。例如：
pdegplot(model, FaceLabels, on ) \% FaceLabels for 3-D
pdegplot(model, EdgeLabels, on) \% EdgeLabels for 2-D
5 创建边界条件。有关详细信息，请参阅第 2-179 页上的“指定边界条件对象”。例如：
applyBoundaryCondition(model, face,[2,3,5],在,[0,0]);%面对3−D