Display option in hyperbolic and parabolic solvers

You can disable the display of internal ODE solution details
that the hyperbolic and parabolic solvers
report. To disable the display, set the Stats name-value
pair to 'off'.

Eigenvalue example

There is a new example of eigenvalues of a circular membrane.
View the example here.
To run the example at the MATLAB^{®} command line:

Performance and robustness enhancements in meshing algorithm

The meshing (geometry triangulation) functions in initmesh and adaptmesh provide
an enhancement option for increased meshing speed and robustness.
Choose the enhanced algorithm by setting the MesherVersion name-value
pair to 'R2013a'. The default MesherVersion value
of 'preR2013a' gives the same mesh as previous
toolbox versions.

The enhancement is available in pdetool in
the Mesh > Parameters > Mesher version menu.

New example

There is a new example of heat distribution in a radioactive
rod. View the example here.
To run the example at the MATLAB command line:

Coefficients of parabolic and hyperbolic PDEs that can be functions
of the solution and its gradient

You can now solve parabolic and hyperbolic equations whose coefficients
depend on the solution u or on the gradient of u.
Use the parabolic or hyperbolic commands,
or solve the equations using pdetool. For details,
see the function reference pages.

Graphics export from pdetool

You can save the current pdetool figure
in a variety of image formats. Save the figure using the File
> Export Image menu. See File Menu.

pdegplot labels edges and subdomains

pdegplot now optionally labels:

The edges in the geometry

The subdomains in the geometry

To obtain these labels, set the edgeLabels or subdomainLabels name-value
pairs to 'on'. For details, see the pdegplot reference
page.

New examples

There is a new example of uniform pressure load on a thin plate.
View the example here.
To run the example at the MATLAB command line:

echodemo clampedSquarePlateExample

There is a new example of nonlinear heat transfer in a thin
plate. View the example here.
To run the example at the MATLAB command line:

echodemo heatTransferThinPlateExample

There is a new example of a system of coupled PDEs. View the
example here.
To run the example at the MATLAB command line:

echodemo deflectionPiezoelectricActuator

pdesmech shear strain calculation change

The pdesmech function
now calculates shear strain according to the engineering shear strain
definition. This has always been the documented behavior. However,
the previous calculation was performed according to the tensor shear
strain calculation, which gives half the value of the engineering
shear strain.

Compatibility Considerations

pdesmech now returns shear strain values
exactly twice as large as before.

Compatibility Summary

Release

Features or Changes with Compatibility Considerations