In summary, the goal of this project is to find a series of airfoil that gives a good efficiency and also how the angle of attack changes with rotation.
#36
ginobee2000
24
0
the polar i had was in txt file format...when i try to export it does not work...but when upload the mh airfoils it does come up showing the plot...
sorry, i don't get your point. Just export any polar that you created in qblade. create a basic naca foil, analyse it and then export the polar and from this you can check which format you need. then create a spline foil and name it as the polat you want to import. then import the polar, this works...
#38
ginobee2000
24
0
i donno i fink it will be better if u..can analyze a simple naca 0012...
and write a step by step procedure to follow.. pls..thanks
#39
HorstClaude
6
0
First you go to "Direct Foil Design", create a NACA0012 Foil there.
Then go to "XFOIL Direct Analysis". Here you create a Polar. Just click Polars->Define an Analysis. When you created the Polar you can run an analysis by clicking the "Analyse" Button on the right side. Then click Polars->Current Polar->Export. Now open the created file and copy your polar data from excel into the file, the file must still have the same format afterwards. In this file you must change the name of the foil to the foil that you want to import. Then create a new foil with exactly the same name in the "Direct Foil Design" module. Now you can import the file that you created by clicking Polars->Import XFOIL polar. The polar should now appear connected to the foil you just created. I hope this works...
#40
ginobee2000
24
0
thanks... i fink this should work.
well HORST i tried to optimize the chord,c(r) along the blade using the expression below
from the root of the blade when i calculated the values of the c(r) i got a very big values when i used the ms excel. which i fink it not right. pls can u show me how to optmize my blade chord. well this is what i got when i put various parameters in the formula above.
i am a new user and i don't know if you guys allow me to participate in your forum, anyways please let me in. I am working on design and fabrication of horizontal axis wind turbine and generator for electricity application.
By now i am already design the blade geometry based on bemt equations but i am not pretty sure about the result i found coz the design process is very iterative so i need to work with an optimization software to do so like "xfoil' but i did not work on it, so if anybody who can help me please contact me soon.
With best respect!
Mesfine
#42
Srikripa
1
0
Hey everyone...
I have been assigned a project on utilizing the qblade software to analyse exising as well as new systems in my country... i feel completely lost with regard to using it... i was hoping you could help me... how do i go about using the software