I import a BladeGen file into DesignModeler (DM) and try to create a fillet at the base of each blade. The model is a 360 runner. Some of the fillets are created properly, but at least half of them are imcomplete and there appears to be a hole at the base of the blade where the fillet should have been created. This is confirmed by importing the resulting model into ICEM.
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Sometimes fillet creation can fail when the fillet is created from several curves rather than one. If the hub surfaces appears as several sub surfaces in DM, the curve around the base of each blade can be discontinuous. This is remedied by going back to the Blade Gen file and merging the segments of the hub curve at the leading and/or trailing edges of each blade. To make this change in Blade Gen, go the the Meridional View and do the following: 1. Right click on the hub line segments on either side of the blade leading edge and make sure that they are Cubic Spline Segments rather than piecewise linear (see first attached .jpeg) 2. If there are no Cubic Spline Segments, change their type by right-clicking one one of the segments between tow points on a line 2. Right click on the points that represent the junction of the leading edge line and the hub (see 2nd attached jpeg) and select Segment Operations -> Join Segment at Point The purpose of these two steps is to make sure that the line types are the same and then join them so that the hub will import into Design Modeler as a continuous surface. This, for some reason, helps to make the fillets, probably because there is now only a single loop curve around the base of each blade where it joins the hub. |
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