small bug fix.


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6537 04224531-1f84-46d8-96ce-875b9e37dce3
some minor edits related to step size control


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6538 04224531-1f84-46d8-96ce-875b9e37dce3
Modified test case since creation of directory is not automatically enforced if the directory is part of the filename. 


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6539 04224531-1f84-46d8-96ce-875b9e37dce3
fixed a problem related to the thermal expansion in ideal gas law in the Navier-Stokes equation.


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6540 04224531-1f84-46d8-96ce-875b9e37dce3
Test case for adiabatic compression of ideal gas.


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6541 04224531-1f84-46d8-96ce-875b9e37dce3
Added some error control for compressibility models.


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6542 04224531-1f84-46d8-96ce-875b9e37dce3
Fixed the boyancy force for axi-symmetric flow equation in case of ideal gas law. It did work properly for cylindric symmetric. 


git-svn-id: svn+ssh://svn.code.sf.net/p/elmerfem/code/trunk@6543 04224531-1f84-46d8-96ce-875b9e37dce3