Jun 10, 20050
the assignment
Tags: school
yeah.. remember the fluidic thrust vectoring project my group have to do? and i’ve actually posted the theory last few weeks, and here iss the result after doing some experiment;
this is the model we used, we spend 30 rm just to design and create this model (yeah, we actually invented this model haha!)anyway, it’s just a small model, cause we cant afford to build one that bigger. the reason? dude, it’s not easy to get a water source with high pressure aight? come on, we are doing this project in college lab, so what do you expect?
this is the important part of the model. cant see it?
ok how bout this? yeah.. this is the main part of the model. it seperates the main/primary flow with the secondary flow.the secondary flow has a smaller area compare to the primary flow. in this experiment, we just want to prove the coanda effect (refer to my post dated 26 may). so i dont think we need to spend so much water on the secondary flow
sad, so sad.. it’s not working.. the model did not working properly.so what’s the next step? well, if we failed to prove the theory of coanda effect, that will be no problem at all cause this is just an experiment, and plus, this fluidic thrust vectoring is not a simple task, it’s a tough topic, and it is best if the experiment done by professionals, not us.. but wait..
discussion may help :)hmm.. then i understand what makes the model not working properly (the proper way should be as shown in the theory aight?).. that is because of the design failure.. oh well.. man made.. surely not perfect!
modified.. the clay (green colour) really help. it did a good jobnow it’s working.. i managed to figured out what had caused the failure, and that’s why i used the clay to modify the model, to make the water flow smoothly.
this is the flow from the secondary exit. the flow going upward because of the coanda effect.. and the purpose of this secondary flow, is to make the primary flow, follow the same direction. see this;
now this is the primary flow.. it flows straight.. as far as it can go depending on how fast the velocity is.the theory said, the primary flow will follow the direction of the secondary flow because of the viscosity and coanda effect..
this is the first shot, hmm.. not bad.. but not really nice
and finally, see!! we did proved the theory! this is the result after we adjusted the velocity of both primary and secondary flow.. you can see that both the primary and secondary water flow, flows at the same direction! which means, the secondary flow has the ability to make the primary flow, follow it’s direction!~ perfect man!yay~ and now, we have to prepare some proper way to presents the experiment.. hmm.. where to get a water source? with high pressure?
hmm.. and dont worry.. i know how 
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