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A parametric study is carried out to examine the influence of some blade design parameters on the performance and the efficiency of the impeller, like the blade length, the inlet height, and the leading edge inclination. Cite this paper as: Grapsas V., Stamatelos F., Anagnostopoulos J., Papantonis D. The optimal impeller design exhibits a remarkable efficiency increase compared to the initial impeller design. The simulation and analysis of the incompressible turbulent flow through the test impeller is performed with a commercial CFD code, and the numerical results are in agreement with the corresponding measurements in a laboratory pump impeller. The values of the above parameters that maximize the hydraulic efficiency of the impeller are then derived by a multiparametric optimization methodology, using a stochastic evolutionary algorithm software.

Alternative Communities: Helpful programs (Try to use both of these when posting on this reddit): Best tool for anonymity: TAILS: -Be sure to burn it onto a DVD, and verify the.ISO before hand. Simple PGP/GPG client: Privacy guides and recommendations: Useful programs Do NOT ask to trade, hookup, or meetup. I've tried to make crack a couple of times with small amounts of coke on a spoon using baking soda, approximately a 4:1 ratio of coke and soda. The first time it went great, the second time I made a mess and spoiled the product. I'm still trying to figure out what the variable is. I have really no background or understanding of chemistry.

That being said, is the ammonia method more reliable? Here's how I am intending to do it. I have ammonia from the hardware store, which I think it 10 percent. It's stinky irritating stuff. I was going to put maybe a quarter or a half of a gram of coke on a spoon, then add a small amount of ammonia, then add intermittent heat underneath until whatever is supposed to happen stops happening. Will this work? For a dummy like me, is this the easiest method?

I used the ammonia method many times and is actually a good way to wash out whatever the cut is. I’ll try to keep this as simple as possible. You’ll need two glass shot glasses, something that can accurately measure milliliter, 10% ammonia (make sure the only contents are NH3 and H2O) distilled water, glass stir rod, and coffee filters. In one shot glass add one ml 10% ammonia to 9ml H2O, in the other glass add your cocaine to 10 ml h2o.

One drop at a time add the ammonia solution to the cocaine solution. Stir for 30 seconds to 1 minute between each drop. An off white rock will begin to form on the stir rod, this is usually the cut.

Once the precipitate turns white, this is your freebase. Pour the pure cocaine solution into a clean shot glass and continue adding ammonia solution drop by drop. Be sure to do this very very slowly as you can make the solution too basic and destroy the product. Once no more freebase forms from the drops of ammonia, scrape your stir rod and filter everything thru a coffee filter and rinse the shit out of it with water until it no longer smells of ammonia. Then you have to let it dry. Note that this won’t yield rocks like the baking soda method.

Aug 12, 2018  How do I cook cocaine with ammonia? Ask New Question. Rebecca Mathews, Seamstress at Working at Home (2015-present) Answered May 22, 2018. You can learn this in prison. I suggest go to prison to learn the hard way. How can you tell if you have fentanyl in your stuff while cooking crack cocaine? Ask New Question.

It’s kinda chunky, but cleaner than regular old crack. I know how substitution reactions work.i have 0 interest in cocaine.

Simply relaying information i came across on the hive. I can only find data regarding the hydrochloride salt of cocaine. Interestingly Wikipedia lists several bases to be used for the conversion, all of which are carbonates Edit- the fact that common street wisdom says that crack= freebase means absolutely nothing.

People don't know shit. For instance black tar heroin is not heroin. It is monoacetyl morphine. Introduction to philosophy pdf. But its still widely believed to be the same thing as diacetyl morphine • • • • • • •. WOAH BROTHA - I LOVE CRACK! ​ Here is my 'Cookin' Crack like a White Boy' ​ • coke • baking soda (not baking powder) • SODA CAN (WAYYYYYY easier than a spoon) • pennies • glass of water ​ Ok, so here is how I make my rocks. The first one will be black, I smoke that bitch anyway.