# Convert a 1-D Cubic Hermite Mesh into a 2-D Mesh

### Description

• In this example, you start by making a circular 1-D mesh using four cubic Hermite elements. Then the four 1-D elements are converted to one 2-D bi-cubic Hermite element, which is then converted to a cubic-linear element.
• The nodal coordinates and element connectivities are read from tab-delimited spreadsheets.

### Start Continuity

• Launch the Continuity Client
• leave the mesh checkbox checked under Use Modules:

• Click OK to bring up the main window

### Create circular mesh with four 1-D cubic Hermite elements

• Select rectangular Cartesian in the Global Coordinates: pop-up menu

• Click OK to submit Coordinate Form

• Choose Hermite Basis Function→1D→Cubic

• Click Add Cubic

• Click OK to submit Basis Form

• View→EditDimensions…

• Click Accept marked recommendations and click OK

• Click the lines radio button

• Click Render to display mesh

### Convert to one cubic-cubic Hermite 2-D circular element

Now we’ll take the 4 1D cubic elements and turn them into the edges of a 2-D cubic-cubic hermite element.

• For elements 2,3 and 4, select each element then click the Delete Element button below to remove each element

• For the remaining one element, enter 4,3,1,2 as the nodes

• Click OK

• Choose Hermite Basis Function→2D→Cubic-Cubic

• Click Add Cubic-Cubic

• Click OK to submit Basis Form

• Select Cubic-Cubic under Coordinate 1 and Coordinate 2

• Modify the derivatives based on the table below
• Click OK to submit Node Form

• Select the Save, reset, and reload radio button on the bottom

• Click OK

• View→EditDimensions…

• Click Accept marked recommendations and click OK

• Click the lines radio button

• Click Render to display mesh

### Convert to linear-cubic interpolation

• Choose Hermite Basis Function→2D→Linear-Cubic

• Click Add Linear-Cubic

• Click OK to submit Basis Form

• Select Linear-Cubic under Coordinate 1 and Coordinate 2

• Click OK

• Click the lines radio button

• Click Render to display mesh

### Pre-built model

This cont6 file contains all data and parameters for this problem: 1d_circle_arclength_derivs.cont6