[Paraview] Help: Calculating Vorticity in paraview

[Andy Bauer]

The Gradient of Unstructured DataSet does provide a vorticity computation
option but as the filter's name implies, it is only valid for grids that
derive from vtkPointSet (vtkStructuredGrid, vtkUnstructuredGrid, vtkPolyData
and maybe vtkLabelHierarchy).

On Tue, Oct 26, 2010 at 12:30 PM, Peter Brady <petertbrady at gmail.com> wrote:

> You can use the 'ComputeDerivatives' filter and select 'Vorticity' as the
> output vector type.
>
> 2010/10/26 David E DeMarle <dave.demarle at kitware.com>
>
>> And although there is no button for it, the standard calulcator will
>> evaluate cross products if you type the expression in manually.
>>
>> The full list of expressions the calculator knows about are (from
>> vtkFunctionParser.cxx)
>> static char funcNames[NUMBFUNCS][10] = {
>>    "abs(",  "exp(",   "ceil(", "floor(",
>>    "ln(",   "log10(", "log(",  "sqrt(",
>>    "sin(",  "sinh(",  "cos(",  "cosh(",
>>    "tan(",  "tanh(",  "asin(", "acos(",
>>    "atan(", "min(",   "max(",  "cross(",
>>    "sign(", "mag(",   "norm(", "if("
>> };
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 28 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-371-3971 x109
>>
>>
>> 2010/10/26 Aurélien Marsan <aur.marsan at gmail.com>
>>
>> Or you can use the python calculator
>>>
>>> http://www.paraview.org/Wiki/Python_Calculator
>>>
>>>
>>>
>>> Le 26 octobre 2010 13:51, Aurélien Marsan <aur.marsan at gmail.com> a écrit
>>> :
>>>
>>> Hi,
>>>>
>>>> In the calculator, you can see all the components of the vectors (in the
>>>> scalars list). You can use the iHat, jHat and kHat vectors too.
>>>> Then you should be able to calculate "manually" the cross product.
>>>>
>>>>
>>>> 2010/10/26 Mubashir Ali <mubashir at iitk.ac.in>
>>>>
>>>> Hi,
>>>>>
>>>>> I have some transient Ensight gold data (cell data). I want to
>>>>> calculate
>>>>> vorticity for each time step. I checked the calculator option in
>>>>> paraview.
>>>>> there i see dot product tab but not cross product tab. Can anyone
>>>>> please
>>>>> help me with it. I am very very new to Paraview
>>>>>
>>>>> Kind Regards
>>>>>
>>>>> Mubashir Ali
>>>>> mubashir at iitk.ac.in
>>>>> Senior Project Associate
>>>>> High Performance computing Lab,
>>>>> Aerospace Department,
>>>>> Indian Institute of Technology
>>>>> Kanpur, India
>>>>> _______________________________________________
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>>>>
>>>>
>>>
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>>
>> _______________________________________________
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>>
>> Visit other Kitware open-source projects at
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>>
>
> _______________________________________________
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>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
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