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Question for the fluid dynamicists here

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  • B Bergholt Stuttley Johnson

    IIRC it was invented by the British to stop French sparking wine (ie champers) from exploding

    You cant outrun the world, but there is no harm in getting a head start Real stupidity beats artificial intelligence every time.

    M Offline
    M Offline
    Munchies_Matt
    wrote on last edited by
    #12

    Don't know who invented it, but it is for strength reasons.

    Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

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    • M Munchies_Matt

      Don't know who invented it, but it is for strength reasons.

      Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

      B Offline
      B Offline
      Bergholt Stuttley Johnson
      wrote on last edited by
      #13

      it is, the concave bottom allows the contents to be under higher pressure, the original problem was the wine bottles if disturbed blew the bottom of the bottle off, not a good idea if you export wine

      You cant outrun the world, but there is no harm in getting a head start Real stupidity beats artificial intelligence every time.

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      • G glennPattonWork3

        I though you were on Hols...

        L Offline
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        Lost User
        wrote on last edited by
        #14

        someone asked a question with the word 'beer' in it - Nagy receives automatic alerts for any booze-related posts ...

        PooperPig - Coming Soon

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        • L Lost User

          someone asked a question with the word 'beer' in it - Nagy receives automatic alerts for any booze-related posts ...

          PooperPig - Coming Soon

          G Offline
          G Offline
          glennPattonWork3
          wrote on last edited by
          #15

          Ahh, that explains it a sort of :beer:+:bob: alert...

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          • G glennPattonWork3

            Ahh, that explains it a sort of :beer:+:bob: alert...

            L Offline
            L Offline
            Lost User
            wrote on last edited by
            #16

            While sometimes a little out-of-this-world, or off-the-planet, I wouldn't describe the nodge as an alien...

            PooperPig - Coming Soon

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            • G glennPattonWork3

              Ahh, that explains it a sort of :beer:+:bob: alert...

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              L Offline
              Lost User
              wrote on last edited by
              #17

              Oh! Sorry - sor the email and not the post - I see you did a bob - I thought you wrote the word alien - if you see what I mean!

              PooperPig - Coming Soon

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              • L Lost User

                Oh! Sorry - sor the email and not the post - I see you did a bob - I thought you wrote the word alien - if you see what I mean!

                PooperPig - Coming Soon

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                glennPattonWork3
                wrote on last edited by
                #18

                No worries!:cool:

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                • M Munchies_Matt

                  I was snorkelling at the weekend and saw a bottle of beer on the sea bed with the top on, I went down to have a look and sure enough, it did. I let it drop back to the sea bed, vertically, neck up, expecting it to hold that position the entire way, but it didn't, it turned sideways, and fell the entire distance sideways, straight down, without any wobble, or instability. Wow I thought, a bottle of beer, falling through water, has LESS drag falling sideways then length ways? I was surprised. Can anyone suggest a reason why this should be?

                  Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

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                  C Offline
                  cptKoala
                  wrote on last edited by
                  #19

                  What I can't figure out and what suprises me is the fact you left the bottle of beer behind :doh:

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                  • C cptKoala

                    What I can't figure out and what suprises me is the fact you left the bottle of beer behind :doh:

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                    M Offline
                    Munchies_Matt
                    wrote on last edited by
                    #20

                    It was a good few months old IMO. I didn't think it would be that drinkable. :)

                    Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

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                    • M Munchies_Matt

                      I was snorkelling at the weekend and saw a bottle of beer on the sea bed with the top on, I went down to have a look and sure enough, it did. I let it drop back to the sea bed, vertically, neck up, expecting it to hold that position the entire way, but it didn't, it turned sideways, and fell the entire distance sideways, straight down, without any wobble, or instability. Wow I thought, a bottle of beer, falling through water, has LESS drag falling sideways then length ways? I was surprised. Can anyone suggest a reason why this should be?

                      Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

                      K Offline
                      K Offline
                      kmoorevs
                      wrote on last edited by
                      #21

                      Wow, excellent observation, question and answers! :thumbsup:

                      "Go forth into the source" - Neal Morse

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                      • M Munchies_Matt

                        It was a good few months old IMO. I didn't think it would be that drinkable. :)

                        Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

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                        PIEBALDconsult
                        wrote on last edited by
                        #22

                        To misquote George Banks: "... rendering the beer undrinkable, even by Americans."

                        You'll never get very far if all you do is follow instructions.

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                        • M Munchies_Matt

                          It was a good few months old IMO. I didn't think it would be that drinkable. :)

                          Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

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                          Joe Woodbury
                          wrote on last edited by
                          #23

                          You could have Nagy do a taste test.

                          1 Reply Last reply
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                          • R Rob Philpott

                            Reminds me of a discussion (argument) which may have happened in real life or perhaps even here. Why do Champagne bottles (except Cristal) have concave bases? A. For strength B. For stacking C. To make the bottle appear bigger Genuine question, I can't remember the answer.

                            Regards, Rob Philpott.

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                            PapaCraft
                            wrote on last edited by
                            #24

                            not at all, only to put the thumb in its ass for serving it... "A flute of champagne must be filled with elegance! As well as the opening of the bottle, Champagne service has its ritual which contributes to the pleasure of the guests. To be paid, the Champagne bottle can be held in the Middle full hand (as is done for other wines). It is also very convenient, especially for the magnums, grasp the bottom of the bottle, right hand thumb introduced in flare and other fingers stretched under the base of the Bole, the other hand gently supporting the neck." Exactly what I say shortly! :-\ http://www.maisons-champagne.com/encyclopedie/vignes_au_plaisir/servir_champagne.htm[^]

                            entia non sunt multiplicanda praeter necessitatem

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                            • P PapaCraft

                              not at all, only to put the thumb in its ass for serving it... "A flute of champagne must be filled with elegance! As well as the opening of the bottle, Champagne service has its ritual which contributes to the pleasure of the guests. To be paid, the Champagne bottle can be held in the Middle full hand (as is done for other wines). It is also very convenient, especially for the magnums, grasp the bottom of the bottle, right hand thumb introduced in flare and other fingers stretched under the base of the Bole, the other hand gently supporting the neck." Exactly what I say shortly! :-\ http://www.maisons-champagne.com/encyclopedie/vignes_au_plaisir/servir_champagne.htm[^]

                              entia non sunt multiplicanda praeter necessitatem

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                              R Offline
                              Rob Philpott
                              wrote on last edited by
                              #25

                              Very nice!

                              Regards, Rob Philpott.

                              1 Reply Last reply
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                              • M Munchies_Matt

                                I was snorkelling at the weekend and saw a bottle of beer on the sea bed with the top on, I went down to have a look and sure enough, it did. I let it drop back to the sea bed, vertically, neck up, expecting it to hold that position the entire way, but it didn't, it turned sideways, and fell the entire distance sideways, straight down, without any wobble, or instability. Wow I thought, a bottle of beer, falling through water, has LESS drag falling sideways then length ways? I was surprised. Can anyone suggest a reason why this should be?

                                Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

                                M Offline
                                M Offline
                                Member 4194593
                                wrote on last edited by
                                #26

                                I'll take a stab. The bottle has less drag falling sideways (smooth shape) than it does with the bottom first (square shape). Dave.

                                M 1 Reply Last reply
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                                • M Member 4194593

                                  I'll take a stab. The bottle has less drag falling sideways (smooth shape) than it does with the bottom first (square shape). Dave.

                                  M Offline
                                  M Offline
                                  Munchies_Matt
                                  wrote on last edited by
                                  #27

                                  It must have. What is odd is that there is so much less drag despite the massive increase in frontal are when falling sideways. I wish I could find a pic of a bottle falling in air, from a great height, to see what attitude it adopts. It might indicate an effect of boundary layer flow is playing a part.

                                  Sign a petition calling for the boycott of Israel until it returns to its legal 1967 borders.

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