BSA Flow Software Installation and User's Guide - CSI

}
}
_close(fh);
return 0;
5.10 Filter
delete [] data;
The filter object allows to define a subrange of a dataset and to perform
further analysis on this subrange only. An example is data acquired between
the blades of an impeller. The blade passages may produce data, which
should be removed. This could be done by adding a filter object to the cyclic
phenomena object to remove data from within certain phase angles or
velocity data, which fall outside the range of fluid velocities to be expected.
The filter object can be a parent object or a child object.
Note Several filter objects can be applied to the same data, filtering one
parameter in each. For example, if you wish to filter the velocity ranges of
two velocity components, you can apply two filters and filter one component
in each.
The properties of the filter object are shown below:
Figure 5-47. Properties of the filter object.
Filter channel selects the quantity being subject to the filtering function.
The selection of quantities depends on the general configuration of the
project and where in a project the filter is applied. A typical example of a
selection of available filter channels is shown below:
Figure 5-48. The filter channel drop-down list
The desired filter range is specified by the lower and upper limit. The limits
have to be entered in the units that are defined for the selected filter channel.
Filter type can be either Values or Range.
Values mean that the filter will apply to the value of the selected quantity,
in the above example PDA D.
5-58 BSA Flow Software: Project explorer objects