Dear all! Last weekend I spent a number of hours working through Dr. Donat Banki's original paper on the crossflow turbine, and reducing it all to a simple program. This program designs the turbine and penstock, starting from gross head and flow, allowing the user to select RPM (within reasonable limits), and producing the basic dimensions of the turbine.
The program makes a number of informed guesses of values such as nozzle loss, pipe roughness, and so on. It has default values for everything, so it should be easy to use even for first timers. But it does not check the user input, working instead on the BIBO principle: Bullshit in, bullshit out... I have put the program on my web site, so those of you who are interested can try it. Of course, I would be VERY interested in feedback, specially from people who have experience with these turbines and who can tell me whether the output makes sense. So far the program only calculates the basic dimensions, with a provisional and not yet accurate estimation of the mechanical load on the blades. I intend to add full structural calculation, so that the program can also calculate things like the blade thickness, and then compensate the nozzle dimensions for the blade thickness... That will come soon. You can download the program here: http://www.ludens.cl/hydro/BANKI.EXE Have fun, and tell me any mistakes you find! Manfred. ---------------------------- Visit my hobby website! http://ludens.cl ---------------------------- ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
