Drawing a centrifugal pump volute
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Right, here's a better version of this,I am just using curviloft and arcs. I will get the proper representation of a volute curve and raw that loft properly, then it just needs to be intersected at the top, and a cylinder punched through.
Jacques
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@jacbk612 said:
Right, here's a better version of this,I am just using curviloft and arcs. I will get the proper representation of a volute curve and raw that loft properly, then it just needs to be intersected at the top, and a cylinder punched through.
Jacques
This is what you can get using the draw metal plugin. The plugin also has a taper maker but have not tried that yet.
Need for you to define the dimensions as well as the desired extruded cross section profiles -
@jacbk612 said:
Right, here's a better version of this,I am just using curviloft
right.. curviloft is the correct tool to use.. but do it like this instead..
[edit].. well.. what p just said before me.. lol..
sorry.. i'll leave this up for the visuals.. -
Here's a five minute version done with Curve Maker and Taper Maker and all else standard tools. I think that's the sort of general shape you want.
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Update, 6 dia, no eye, taper round .5 to .25". 1 turn h=3"
Waiting on dimensions and taper cross section ( selection limited to round, rect, diamond,>..... -
If the taper is geometric along the length, I found using Curviloft "create loft junctions along a given path" worked in one process.
I used BZ Toolbar curves uniform B- spline (though other ways should work), Chris Fullmer Perpendicular Face tools to put a circle on each end, and curviloft- using just a beginning and ending circle. Just an idea if it works for you.
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Gilles, this approach seems like the most promising. The loft path seems like a single curve, how was it achieved? Is it a bezier curve?
Thanks,
Jacques
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2 tangent arcs-circle ?
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@unknownuser said:
mais je me doutais que le "bleu des mers du sud" avait encore dû frapper!
J'avoue ne pas comprendre.
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@ Gilles : Non même pas, j'avais même pas vu qu'il y a avait un fichier à charger!
car d'habitude les fichiers à charger sont en fin de post!
mais je me doutais que le "bleu des mers du sud" avait encore dû frapper!Et merci pour les V6! Ah si tout le monde en faisait autant!
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C'était pourtant évident!
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Pourquoi faire compliqué quand on peut faire simple...
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Gilles, thank you that is excellent and simple.
I will use English to include all our other friends.
I did open the file but I don't think you can tell in sketchup what type of line it is, are all curved lines arcs or circles probably not.
Jacques
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I plan to build up this pump completely with an impeller and everything and then run the Khamsin CFD plugin to see if I can get a nice real time simulation.
Gilles, is this something you are familiar with? Does this sound feasible?
Jacques
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Entity info tells you what a selected thing is.
Building the pump is feasible with SU, hope you got better blueprints or a model.
I don't have knowledge about Khamsin CFD .
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I have been thinking about this all week! Giles your approach follows the KISS formula. All the newbies (myself included) want a "plugin" to do everything fast and easy but sometimes you have to step back and look at what you got... and what you know. You reshaped my thinking.....thank you.
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@jacbk612 said:
I plan to build up this pump completely with an impeller and everything and then run the Khamsin CFD plugin to see if I can get a nice real time simulation.
Gilles, is this something you are familiar with? Does this sound feasible?
Jacques
Gilles did a supper job of showing the approach. However, if you are going to spend the model effort and then simulation I would to suggest for your consideration:
Draw metal plugin will draw a volute for you vs using vs the two arcs. I used the radius shown in the drawing and 4turns to get a close fit then cut that to 1 turn.I think this approach will allow you to set the impeller differential spacing side to side more accurately. I spent some time trying to get better edge detection vs the raster dwg but no joy so far. TIF format would probably be better;
Khamsin has a YouTube video showing the simulation of a 250 cc kart. I was not able to find any definition for the system requirements but it was mentioned dual cores are required for some functions. In addition it has some 700,000 faces( as best as could tell) and appears to require 10+ hours to run. The point, make sure you look at your system, memory requirements etc so you know you have the hardware to run it.
Good Luck here is a link that may have data of interest to you http://www.hindawi.com/journals/ijrm/2011/137860/ -
@jacbk612 said:
I plan to build up this pump completely with an impeller and everything and then run the Khamsin CFD plugin to see if I can get a nice real time simulation.
Gilles, is this something you are familiar with? Does this sound feasible?
Jacques
Hello Jacques,
Could you get it done?
I am planning to design a pump and use Khamsin CFD, but I am just begining to work with Sketchup.
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