comsol错误提示及解决方法

Diagnostics : Error Messages

Error Messages

This section summarizes the most common error messages and solver messages generated by COMSOL Multiphysics. All error messages are numbered and sorted in different categories according to the following table. TABLE 2-1: ERROR MESSAGE CATEGORIES NUMBERS CATEGORY 1000–1999 Importing Models 2000–2999 Geometry Modeling 3000–3999 CAD Import 4000–4999 Mesh Generation 5000–5999 Point, Edge, Boundary, and Subdomain Specification 6000–6999 Assembly and Extended Mesh 7000–7999 Solvers 8000–8999 Postprocessing 9000–9999 General For error messages that do not appear in the following lists, contact COMSOL’s support team for help.

2000–2999 Geometry Modeling

TABLE 2-2: GEOMETRY MODELING ERROR MESSAGES ERROR NUMBER ERROR MESSAGE EXPLANATION 2118 Negative output from empty input Incorrect Geometry M-file. 2119 Non scalar output from empty input Incorrect Geometry M-file. 2120 Normal directions are inconsistent Incorrect input data from STL/VRML import. 2138 Self intersections not supported Curves resulting in self-intersections are not supported. 2140 Singular extrusions not supported Error in input parameters. 2141 Singular revolutions not The revolved mesh has a singularity at the z axis. If supported possible, create the cylinder using a 3D primitive or by revolving the geometry before meshing. 2146 Subdomain must bounded at least four boundary segments Incorrect geometry for mapped mesh. 2147 Subdomain must bound Incorrect geometry for mapped mesh. one connected edge component only 2190 Invalid radius or distance Incorrect input parameters to fillet/chamfer. 2197 Operation resulted in empty geometry object Geometry operation resulted in an empty geometry object which is not allowed. Make sure an empty geometry object is not created. 2209 Geometry to revolve may The axis of revolution and the geometry intersect. not cross axis of Check the dimension of the geometry and the revolution definition of the axis for the revolution.

4000–4999 Mesh Generation

TABLE 2-3: MESH GENERATION ERROR MESSAGES ERROR NUMBER ERROR MESSAGE EXPLANATION 4002 A degenerated tetrahedron was created The mesh generator ran into numerical difficulties while creating tetrahedrons with a size based on user-controlled parameters. Causes could be too small and narrow subdomains relative to the rest of the geometry or exceedingly short boundary segments. Try to avoid creating small and narrow subdomains and very short boundary segments that are adjacent to longer boundary segments. 4003 A degenerated triangle was created The mesh generator ran into numerical difficulties while creating triangles with a size based on user-controlled parameters. Causes could be too small and narrow subdomains relative to the rest of the geometry or exceedingly short boundary segments. Try to avoid creating small and narrow subdomains and very short boundary segments that are adjacent to longer boundary segments. 4012 Cannot create The geometry does not fulfill the topological requirements mapped mesh for for a mapped mesh. Changes in input parameters or further this geometry subdomain division can possibly help this. 4026 Failed create matching edge discretizations Cannot make mapped mesh with the given input parameters. 4029 Failed to insert point Problems inserting point at given coordinate. Manually inserting a point there may help. 4031 Failed to respect The mesh generator failed in making the elements boundary element compatible with the geometry object’s edges. The reason on geometry edge for this could be that the face mesh is too coarse or contains adjacent elements with large differences in scale. Another reason can be that some subdomains in the geometry are too narrow with respect to the rest of the geometry. 4032 Failed to respect See Error message 4031. boundary element on geometry face 4044 Internal error boundary respecting See Error message 4031. 4054 Invalid topology of The geometry object cannot be used for creating a mapped geometry mesh. It must be subdivided. 4055 Isolated entities found Entities that are not connected to the boundaries of a geometry objects is found. The mapped mesh generator does not support such isolated entities. 4119 Singular edge detected The geometry object contains an edge of zero length. 6000–6999 Assembly and Extended Mesh

TABLE 2-4: ASSEMBLY AND EXTENDED MESH ERROR MESSAGES ERROR NUMBER ERROR MESSAGE EXPLANATION 6008 Circular variable dependency detected A variable has been defined in terms of itself, possibly in a circular chain of expression variables. Make sure that variable definitions are sound. Be cautious with equation variables in equations. 6063 Invalid degree of freedom name The software does not recognize the name of a degree of freedom. Check the names of dependent variables that you have entered for the model. See also Error 7192. 6139 Wrong number The current solution or the stored solution has for some of DOFs in reason the wrong number of degrees of freedom, sometimes initial value due to a change of the implementation of elements between two versions of the software. To overcome the problem, go to the Initial value area in the Solver Manager, and select Initial value expression. Then the initial value expressions is evaluated without using the current or stored solution. 6140 Wrong number of dofs in linearization point The current solution or the stored solution has for some reason the wrong number of degrees of freedom, sometimes due to a change of the implementation of elements between two versions of the software. To overcome the problem, go to the Value of variables not solved for and linearization point area in the Solver Manager, and click the Use setting from Initial value frame button or the Zero button. 6163 Divide by zero A property in the model contains a divisor that becomes zero. Check …… 此处隐藏：4156字，全部文档内容请下载后查看。喜欢就下载吧 ……