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Thread: Too funny not to share

  1. #1
    jrussl's Avatar
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    Too funny not to share

    A friend posted this question today. I found it too damn funny not to share. Compliments of Ethan B.

    If the amount of oil on its outside equals the amount of oil on its inside, then the oil will leak in instead of out, right?




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  2. #2

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    Well... technically this is incorrect. If the amount outside equals the amount inside then there should be no transfer so you should theoretically have no leak.
    Hmmm. Might be worth a try.

    Quote Originally Posted by jrussl View Post
    A friend posted this question today. I found it too damn funny not to share. Compliments of Ethan B.

    If the amount of oil on its outside equals the amount of oil on its inside, then the oil will leak in instead of out, right?




    Sent from my iPad using SuperCub.Org mobile app

  3. #3
    frequent_flyer's Avatar
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    Quote Originally Posted by tzfred View Post
    Well... technically this is incorrect. If the amount outside equals the amount inside then there should be no transfer so you should theoretically have no leak.
    If you want technical rather than an attempt at humour - the transfer direction and rate do not depend on the quantity/amount inside or outside. What matters is the pressure differential between "outside" and "inside".
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    Ouch. Well it was an "attempt" at humor. I thought the original post was funny and thought I would add to the conversation obviously related to tracking and fixing leaks on our trusty engines. Just thought the idea that once you spread enough oil on the outside the leak might stop was funny . But I guess it was just me.

    Having said that I was led to understand that Bernoulli, using a few very creative boundary conditions simplifies the potential flow equation to give us a simple solution to incompressible flow (most everyday liquid transfers). The leak in fact is related to the sum of the head, the velocity squared, and the pressure on either side of the plane of interest. But thanks for clarifying. I'll step back from this thread now. My apologies to any other readers for taking a light hearted friendly giggle and making it serious but...
    Last edited by tzfred; 11-29-2022 at 01:55 PM.
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  5. #5
    wireweinie's Avatar
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    Ranks right up there with 'is the sea level higher in Alaska?'

    Web
    Life's tough . . . wear a cup.
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  6. #6
    cubflier's Avatar
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    Quote Originally Posted by wireweinie View Post
    Ranks right up there with 'is the sea level higher in Alaska?'

    Web
    That's a deep subject.

    Jerry

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    I liked it! But I had already run an experiment to check the validity. For years. So I had inside knowledge
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    It was great. So was your response.

  9. #9
    RVBottomly's Avatar
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    Reminds me of my childhood best friend with a homemade truck camper. It had a flat front and gas mileage was around 10 mpg. We rigged up a piece of plywood and braces to direct the air flow over the camper, and suddenly got around 15 mpg.

    So, he said, "let's make it bigger. Pretty soon we will be making gas!"

    Why not?
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  10. #10

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    Or the 747 that started losing engines over the Atlantic.. every time they lost an engine the Captain would announce that they could continue, but would be progressively later and later to their destination. So they lose the third engine and the Captain assures them they could continue on one, but would now be 3 hours late. A passenger turns to his buddy and says “if we lose that last engine, we’ll be up here all day”…

  11. #11
    BC12D-4-85's Avatar
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    Quote Originally Posted by wireweinie View Post
    Ranks right up there with 'is the sea level higher in Alaska?'

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    Always there's some smart jazz answer> https://oceanservice.noaa.gov/facts/globalsl.html

    Oil leaks are a math function of suck and blow pressure. So, it depends on which side of that you are. In my opinion.

    Gary
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  12. #12
    RVBottomly's Avatar
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    Quote Originally Posted by BC12D-4-85 View Post
    Always there's some smart jazz answer> https://oceanservice.noaa.gov/facts/globalsl.html

    Oil leaks are a math function of suck and blow pressure. So, it depends on which side of that you are. In my opinion.

    Gary
    I was trying to keep my mouth shut on that, but I also think gravity is a little stronger up north, too.


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  13. #13
    BC12D-4-85's Avatar
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    Quote Originally Posted by RVBottomly View Post
    I was trying to keep my mouth shut on that, but I also think gravity is a little stronger up north, too.
    Yup! https://en.wikipedia.org/wiki/File:G..._animation.gif Instead of 5'9" I'd be taller in the Blue areas.

    Gary
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  14. #14
    skywagon8a's Avatar
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    Quote Originally Posted by BC12D-4-85 View Post
    Yup! https://en.wikipedia.org/wiki/File:G..._animation.gif Instead of 5'9" I'd be taller in the Blue areas.

    Gary
    Does this mean ships need more floatation to cross the north Atlantic than the Pacific?
    N1PA
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  15. #15
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    Quote Originally Posted by wireweinie View Post
    Ranks right up there with 'is the sea level higher in Alaska?'

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    sea level stays the same, the shoreline just raises and falls 30' every 6 hrs.
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  16. #16
    BC12D-4-85's Avatar
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    Quote Originally Posted by skywagon8a View Post
    Does this mean ships need more floatation to cross the north Atlantic than the Pacific?
    Depends. Floatation is determined by surface water density (a function of temperature and salinity) which can be higher near the colder Polar regions. Any nearshore layer of fresh water from rivers or melting glaciers can affect that some. It's a loaded float aircraft in seawater vs fresh, thing.

    Gary

  17. #17
    Gordon Misch's Avatar
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    Floatation is determined by surface water density
    , multiplied by the local acceleration of gravity.
    Gordon

    N4328M KTDO
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  18. #18
    BC12D-4-85's Avatar
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    Oil tank leakage to floating ships at sea....quite a thread drift. Winter in the Arctic causes this.

    Here's more on the mystery of floatation. Note a ways down in the article the load lines or Plimsoll marks on ship sides and how they vary under different environmental conditions. Gordon's gravity noted previously affects floated stability....we have lost top heavy crab fishing vessels because of that issue.

    Gary

  19. #19

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    So which is oilier, Kansas, Nebraska, or Texas? I guess it depends on which sucks or blows and when. Sorry, old Kansas joke about why it is so windy in the state.

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