Activity for QBlade
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Arezoo posted a comment on discussion Help
In Reynolds 1 M and without flap the Results are the same.
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Hi What is the Xfoil version of Qlade? I'm wirtting a program like Qblade in Matlab. But when i'm using the flap in qblade or higher reynolds numer, the Cl and Cd results are different in qblade and my Xfoil code in matlab.
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Kamil posted a comment on discussion Help
Hello David :> Im new to Qblade but this program is greate. I use it for symulate VAWT that i want to build. Can You help me how to (step-by-step) use variable pitching. I need to set table like this for my blade : Azimuth - pitch 90 - 10 91 - 12 92 - 14 ...... For all 360 azimuth This will help me to set the best AoA for all azimuth of my blades. Regard Kamil p.s. this is my symulation file
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Johan Degraeve posted a comment on discussion Help
Hi, is there a manual of how to use/create a chrono file in order to get this implemented. I understand this is needed to determine the exact pitch on every azimuth angle at any rts and any Vw in Qblade. I tried every file in the chrono directory but I don't find any file containing the words 'Numbld" and 'TRQTBFILE', so I suppose we need to create it?
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David posted a comment on discussion Bug Reports
Hi all, as the title says this forum is discontinued. This doesnt mean that it will be removed, however I will stop moderating and answering questions here. You find the new forum under this address: https://qblade.org/qblade-forum/ BR, David
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Hi all, as the title says this forum is discontinued. This doesnt mean that it will be removed, however I will stop moderating and answering questions here. You find the new forum under this address: https://qblade.org/qblade-forum/ BR, David
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Anonymous posted a comment on discussion Bug Reports
Eagerly waiting for the new release :-)
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Anonymous posted a comment on discussion Help
Hello David, I have a problem with the simulation module. I can see that when I change the rpm (at design point) I vary the loads. But as you can see in the attached images for 1000 rpm I get lower loads than at 200 rpm. Another question, if I am seeing von mises loads why are the minimum loads negative? thanks Greetings Julieta
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Anonymous posted a comment on discussion Help
Hi! I am trying to run a VAWT Lifting Line simulation on QBlade to validate a solver I have developed. Unfortunately, I need QBlade to be run on a linux cluster. I was wondering if there is an open source verison of it that I could set-up in my cluster directly? Thanks!
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Hi, this seems to be an issue - the values are swapped. Thanks for the hint, I'll fix it for the next release of QBlade 2.0. BR, David
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Anonymous posted a comment on discussion Help
Hi there, is it possible that in the graphical evaluations of the node translations X and Z have been swapped? In my case, the displacement in the X-direction is significantly larger than in the Z-direction, although it is the case that the rotor is stationary and it is blown with a wind velocity of 30 m/s. This does not make any sense to me.
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Anonymous posted a comment on discussion Help
GREETING NOW iam designing vawt i have same problem that you mention befor can you help me (the parameter CD90 is the drag coefficient at 90° AoA for a thin plate; how can I calculate it?Using the Viterna equation (CDmax=1.11+0.018AR, with AR aspect ratio = chord/(height wings))?)
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Anonymous posted a comment on discussion Help
Hi David What is the latest situtation with Chorono? BR
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Anonymous posted a comment on discussion Help
did you figure out how to use it? I am also not sure about the parameters as I need for a paper at the moment. I would be very greatful if you helped me. Kind regards Sebastian
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Anonymous posted a comment on discussion Help
hey Marko, do you know how to use the tool? I am trying to figure it out but some help would be nice, if it's fine for you. I am not sure how to use the parameters when analysing a new foil. Kind regards Sebastian
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Nice, thanks for this tip! For the next release this hopefully shouldnt be an issue any more! What could also help would be Options Menu-> Reset to default settings.... BR, David
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Nice, thanks for this tip! For the next release this shouldnt be an issue any more! BR, David
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Anonymous posted a comment on discussion Help
Hi, I had the same problem on various Linux distributions (Arch, Ubuntu, Mint, etc.). As recommended by Jan, the solution was to delete $HOME/.config/QBLADE.conf. Adding rm $HOME/.config/QBLADE.conf to the first line of run_qblade.sh solves the problem for those (like me) that often forget to delete the config file before starting QBLADE. Gabriel
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Hi Mariano, this July, so just around the corner... BR, David
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Anonymous posted a comment on discussion Help
Hi David Any updates about chrono? What is the release date?
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fxzaragoza modified a comment on discussion Help
How to compile Qblade on Linux (Ubuntu 64bit) and Qt5 Guide for "clumsy" (like me ;-) -1 Install libqglviewer-dev-qt5, libqglviewer-headers and libqglviewer2-qt5 -2 From Terminal temporarily add this Path: export Path=$PATH:/usr/lib/x86_64-linux-gnu -3 Download and unzip https://sourceforge.net/projects/qblade/files/Source/QBlade_v0.96_source.zip/download -4 In the src/xUnsteadyBEM/Windfield.cpp file change: pragma omp parallel default (none) \ to: pragma omp parallel default (none) shared (pointsInTotal,...
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How to compile Qblade on Linux (Ubuntu 64bit) and Qt5 Guide for "clumsy" (like me ;-) -1 Install libqglviewer-dev-qt5, libqglviewer-headers and libqglviewer2-qt5 -2 From Terminal temporarily add this Path: export Path=$PATH:/usr/lib/x86_64-linux-gnu -3 Download and unzip https://sourceforge.net/projects/qblade/files/Source/QBlade_v0.96_source.zip/download -4 In the src/xUnsteadyBEM/Windfield.cpp file change: pragma omp parallel default (none) \ for: pragma omp parallel default (none) shared (pointsInTotal,...
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How to compile Qblade on Linux (Ubuntu 64bit) and Qt5 Guide for "clumsy" (like me ;-) -1 Install libqglviewer-dev-qt5, libqglviewer-headers and libqglviewer2-qt5 -2 From Terminal temporarily add this Path: export Path=$PATH:/usr/lib/x86_64-linux-gnu -3 Download and unzip https://sourceforge.net/projects/qblade/files/Source/QBlade_v0.96_source.zip/download -4 In the src/xUnsteadyBEM/Windfield file.cpp change: pragma omp parallel default (none) \ for: pragma omp parallel default (none) shared (pointsInTotal,...
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It works!!! Thanks David :-) To fix the "file not found" I have edited the file qblade_V9.pro, changing "-lQGLViewer" to "-lQGLViewer-qt5" And that's it. Thank you David for your help without which I would have left QBlade. In next Post I will make a summary (for "clumsy" like me ;-) of the steps required to compile QBlade on linux with Qt5.
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Hi David, Thank you for your reply. I made the indicated modifications in WindField.cpp :-) **pragma omp parallel default (none) shared (pointsInTotal, numberOfFrequencies) \** it works!!! :-) but after about 10min of compilation... can't find lQGLViewer (and neither can I... :-( fx@fx-pc:~/Descargas/qblade-master$ make g++ -Wl,-O1 -o QBlade MainFrame.o Main.o Globals.o TwoDWidget.o GLWidget.o GLLightDlg.o BatchDlg.o BatchThreadDlg.o XFoilTask.o CAddDlg.o FoilCoordDlg.o FoilGeomDlg.o FoilPolarDlg.o...
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It works!!! Thanks David :-) To fix the "file not found" I have edited the file qblade_V9.pro, changing "-lQGLViewer" to "-lQGLViewer-qt5" And that's it. Thank you David for your help without which I would have left Qblade. In next Post I will make a summary (for "clumsy" like me ;-) of the steps required to compile Qblade on linux with Qt5.
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Hi David, Thank you for your reply. I made the indicated modifications in WindField.cpp :-) **pragma omp parallel default (none) shared (pointsInTotal, numberOfFrequencies) \** it works!!! :-) but after about 10min of compilation... can't find lQGLViewer (and neither can I... :-( **fx@fx-pc:~/Descargas/qblade-master$ make g++ -Wl,-O1 -o QBlade MainFrame.o Main.o Globals.o TwoDWidget.o GLWidget.o GLLightDlg.o BatchDlg.o BatchThreadDlg.o XFoilTask.o CAddDlg.o FoilCoordDlg.o FoilGeomDlg.o FoilPolarDlg.o...
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Hi David, Thank you for your reply. I made the indicated modifications in WindField.cpp :-) **pragma omp parallel default (none) shared (pointsInTotal, numberOfFrequencies) \** it works!!! :-) but after about 10min of compilation... can't find lQGLViewer (and neither can I... :-( ~~~ **fx@fx-pc:~/Descargas/qblade-master$ make g++ -Wl,-O1 -o QBlade MainFrame.o Main.o Globals.o TwoDWidget.o GLWidget.o GLLightDlg.o BatchDlg.o BatchThreadDlg.o XFoilTask.o CAddDlg.o FoilCoordDlg.o FoilGeomDlg.o FoilPolarDlg.o...
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Hi Felix, in the same way as before you can fix these compile errors by including the reported variables into the shared bracket, separating them by commas... pragma omp parallel default (none) shared (variableA, variableB, variableC) BR, David
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hey, my only advice would be to compile in debug mode to get a specific error trace. Other than that: in july 22 we will be releasing the next qblade version which has 99% of all previous bugs ironed out - so this will most likely fix your issue.
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Anonymous posted a comment on discussion Bug Reports
hi my program is closing automatically while simulation of BEM. can you please help me
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Hi David, Thank you for your reply. I made the indicated modifications but the result is the same: src/XUnsteadyBEM/WindField.cpp: In member function ‘void WindField::calculateWindField()’: src/XUnsteadyBEM/WindField.cpp:803:17: error: ‘numberOfFrequencies’ not specified in enclosing ‘parallel’ 803 | #pragma omp for | ^~~ src/XUnsteadyBEM/WindField.cpp:780:13: error: enclosing ‘parallel’ 780 | #pragma omp parallel default (none) shared (pointsInTotal) \ | ^~~ make: *** [Makefile:7078: WindField.o]...
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Hi Felix, fx@pc:~/Descargas/QBlade 64bit release linux$ ./run_qblade.sh ./bin/QBlade: error while loading shared libraries: libQGLViewer.so.2: cannot open shared object file: No such file or directory The library is not found here, you need to add the library PATH to your environmental variable LD_LIBRARY_PATH src/XUnsteadyBEM/WindField.cpp: In member function ‘void WindField::calculateWindField()’: src/XUnsteadyBEM/WindField.cpp:793:19: error: ‘pointsInTotal’ not specified in enclosing ‘parallel’...
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Hi Felix, fx@pc:~/Descargas/QBlade 64bit release linux$ ./run_qblade.sh ./bin/QBlade: error while loading shared libraries: libQGLViewer.so.2: cannot open shared object file: No such file or directory The library is not found here, you need to add the library PATH to your environmental variable LD_LIBRARY_PATH src/XUnsteadyBEM/WindField.cpp: In member function ‘void WindField::calculateWindField()’: src/XUnsteadyBEM/WindField.cpp:793:19: error: ‘pointsInTotal’ not specified in enclosing ‘parallel’...
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Hello: I would like to verify an old project (from 25 years ago!!) of a 30Kw VAWT with Qblade. QBlade_linux_v0.96.2_64bit gives me the error: fx@pc:~/Descargas/QBlade 64bit release linux$ ./run_qblade.sh ./bin/QBlade: error while loading shared libraries: libQGLViewer.so.2: cannot open shared object file: No such file or directory I tried to compile from the source giving another error: src/XUnsteadyBEM/WindField.cpp: In member function ‘void WindField::calculateWindField()’: src/XUnsteadyBEM/WindField.cpp:793:19:...
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