Fluid mechanics

Hei, crossfire. I am looking for help with my homework in fluid mechanics. I have done my homework, but I have some mistakes so im looking for someone who can guide me to the right path.

My homework
image: Untitled

1. calculate the components of the external surface of the control volume A,B,C,D,E
2.calculate the dynamic components of the external surface of the control volume A,B,C,D,E
3.Calculate the hydrostatic components of the control volume in the external surface

EDIT: first 2 question i have answered correctly. 3rd question is 80% right (i think). I only have to find buoyancy of face A.

But now i have 2 extra questions. Ihave to find u1(x2) when 1) Couette flow ( p/x1 = 0 ) and 2) Poiseuille flow (U=0)
For your help, I can give you Dota2 invite, Diablo 3 questkey, money or smth else.
Comments
53
hmmmmmmmmm


























































don't have a fucking clue
and that's why i study economy and not fucking mathrelatedbullshit.
gl with that !
You have to deal with mathrelatedbullshit if you are learning engineering.
Parent
Sorry, I'm already busy

image: sage-und-schreibe,-Uebungswortschatz-grundstufe-deutsch
how the fuck is learning this going to be used in real life XD
fluid mechanics teacher
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[img|left]http://www.troll.me/images/futurama-fry/touche-thumb.jpg[/img]
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stop misusing memes please...
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macro images brah
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still misued meme...
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misused macro image brah
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not sure if trolling or seriously fucking stupid
Parent
weren't they synonyms?
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HOW ABOUT NO
Parent
how about yes...
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HOW ABOUT NO
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you already lost...
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for example engineers in industry
Parent
ok it wasnt that literal of a question -____________-"
Parent
But my answer was :D take care
Parent
you gave the reason why I dislike educational institutions. "Here, solve this math puzzle" or "here is a question with only one right answer, you better remember it else you fail"
Understanding how things work isn't just remembering stuff, rather knowing it so you can explain it through logic and reason. That being said, fluid dynamics are interesting, your math problem isn't. :D

Though it's been said by some that math is the language of the universe so it's most likely highly useful. But what I said earlier applies when studying it. It's all just remembering formulas and other tools to use math, not really aimed to give you the fundamental understanding of it so you could figure out these things yourself that they teach you to remember.
Actually, this homework is aimed to give fundamental understanding of Navier-Stokes equation.
But you are right about the math part, its not interesting at all.
Parent
this goes pretty abstract and it's more of a guideline rather than a rule, but you just gave me an example of what I mean. we are taught to understand equations and other concepts and through these various concepts we understand math instead of understanding the math itself. To give another example, we know a lot about the world, we have wide variety of concepts and theories - morale, scientific method, lifestyles built upon our understanding of the world but it's all very superficial because if I were to raise the question what is reality, people have no clue. Sure they have a belief or a belief system like everyone, but they don't know. Science as a study of matter is not interested in the fundamental questions of life, neither is religion as a study of spirituality. In fact, all the important questions have been dumped to the philosophers, Who are we, Why are we here, Where are we going, What is reality etc.

So as a philosopher I must ask, what is math? :D
Parent
Quotethis goes pretty abstract and it's more of a guideline rather than a rule ... through these various concepts we understand math instead of understanding the math itself...


At first i was like wtf and then I understood:
QuoteSo as a philosopher


Actually, it is more of a rule, than a guideline.
Parent
u talk too much and solve too little

math solves practical problems like does the airplane fly ? or does the sub goes down the ocean with people + still fires ammo ?
can an elevator carry u ?
does a bridge colapses on heavy trucks ?

math as to be teached conceptualy but aplied and adapted exclusively to each problem
that is done by the person wanting to solve the problem and not by a teacher teaching how to solve one problem and tell us to adapt to other problems, that only can be used as a aplication example
Parent
I didn't say lets not use math. And do you really consider philosophers worthless or was that just aimed at me? Either way, makes me go "eh..?"
Parent
i dont even believe that you as a philosopher blocked at my first line of comment ffs

not worthless just not able to make comments on this type of subjects, the man asked for help and you replied on how u dislike the modern educational system

"ééééh..?"
Parent
I wasn't blocked by your first line, in fact I responded to your whole comment with my first line, THEN I came back to your first line.

"the man asked for help and you replied on how u dislike the modern educational system"

Well, think of it this way then. I dont know the answer to man's question. I can either ignore the whole journal or write something. I decided to write something, that something was my opinion about his problem and I raised questions to provoke conversation. I was actually hoping he'd respond something related to math and/or fluid dynamics but yeah, that was too optimistic of me. It's not like my comment was the perfect to provoke such conversation but it's a start. He could've replied saying something like "yeah, the math problems are boring and this specific problem is aimed to understanding Navier-Stokes equation" which itself was a fine example of what I said earlier in my comment and wanted to add more depth to it. There is still one loose end which is talking about Navier-Stokes, but I haven't gotten into reading much about it YET.
Parent
why so much words to say u were bored and wanted to start a conversation ?
Parent
so you could reach conclusion more easily, I didn't want a bunch of irrelevant questions this time.
Parent
fair enough
altough now i think i could be a worthy conversation partner, and no, im not a professional philosopher
Parent
Yeah well in all essence philosophy is simply love for knowledge. Those who practice it a lot end up "pro", but there's no division as such. I do practice it a lot and it's actually quite hard to have challenging conversations unless I enter fields I'm not so familiar with.
Parent
implying u can outargument any man in a field you are very familiar with

familiar with what kind of topics?
Parent
Philosophy is not a competition, there are no winners or losers, there is only understanding. Let's take math as an example because it's very concrete. Say I've practiced math for decades and you only a couple of years. The problems I ponder are on a completely different level than the problems you ponder.
I could be trying to figure out the speed Jesus had to reach in order to walk on water or does light bend because of space/time fabric or do we have false assumption about linearity of light while in the meantime you might be wondering how fast you have to drive to get to a meeting in time or how long does it take for your tea to cool down so it's perfect for your taste.
I've studied countless topics and concepts each with varying degree of depth and it's simply uninteresting if I've already moved on to a next level of thought in the chosen subject.
Parent
loool xDDD
ok proceed, your level must be awesome
Parent
as Einstein put it, "I want to know God's thoughts, the rest are details"
but there is so much to understand that no human could ever become God, that's why it's so fun to be human, you get to make choices that will decide the course of your experience, "free will" if you will.
Parent
so basically, Navier-Stokes is all about seeing fluid dynamics mathematically? (trying to get my head around it)
Can't help you there since math is a language I'm not very good at, but fluid dynamics in general is a very important aspect to anyone trying to figure out structure of matter. There are lots of stuff written about Vortices, Fibonacci, "Universe's Blueprint", Micro/Macro Cosmos and All sorts of Theory-of-Everything's that are highly related to fluid dynamics. Math is precise while philosophy is broad. To grasp any of this, to really begin to understand, you need both in my opinion. I have ground in philosophical aspect of it, but highly lacking in math. If you're interested in chatting (in english) about it I'm up for it.
Parent
Ok, will give it a try someday and maybe even in Finnish. But in 1 or 2 years I have to learn Finnish anyway because I want to do my masters degree in University of Helsinki.
Parent
yeah, mainly english and finnish and only a little bit of "mathish" and eesti keel :)
Parent
mechanical engineering?
If your question is what im studying, then yes.
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yea.nice.same

but didnt get there yet

gl tho!
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i can do it in 50 seconds you j3lly?
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You did solve rubics in 50sec, but you didnt learn it in 5min.
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how do you know?
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common sense
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