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Post by Lokifan on Dec 3, 2012 9:41:25 GMT
I saw a potential myth in the new Bond film that's a bit of a Hollywood action movie cliche:
Massive fireball shoots down a corridor, and hero darts out of the way into a cross passage to escape being fried. Can any explosion/fireball behave like that in real life, under any circumstances? Or will it simply engulf the entire area, torching the hero? Could the pressure of the blast never give the flames a chance to spread to the side?
It could make a cool test. Build a corridor, then shoot fireballs down it and see where they go.
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Post by freegan on Dec 3, 2012 10:47:13 GMT
Also monitor the oxygen content of the air in the side chamber both before and after the fireball passes.
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Post by the light works on Dec 3, 2012 15:28:56 GMT
It's fluid dynamics, similar to the shockwave in the trench. a few more complications since you are also taking about thermal radiation, as well as combustion, but still following known laws of physice.
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Post by WhutScreenName on Dec 3, 2012 18:26:38 GMT
It's fluid dynamics, similar to the shockwave in the trench. a few more complications since you are also taking about thermal radiation, as well as combustion, but still following known laws of physice. So do you believe the hero would be safe, or cooked? I've always felt they would be cooked. Another movie example of this happening is Independence Day and inside the tunnel. |
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Post by The Urban Mythbuster on Dec 3, 2012 20:37:49 GMT
Assumming the fireball has a diameter less than the width of the hallway, it will continue on its path & ducking into a hallway would take Bond out of direct danger. Though, that does not mean that he wouldn't be effected by heat radiating off of the fireball.
On the other hand, if the diameter of the fireball is equal to or greater than the width of the hallway, it would be able to disperse into attached corridors as it would look to maintain the shape of the path it's traveling. If the path diverges, the fireball would also partially diverge.
Think of shooting water down a corridor. If you are shooting a stream, the water will remain in a stream until reaching it's terminus. If you are attempting to flood the room with water, the water will go into any adjoining corridors.
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Post by freegan on Dec 3, 2012 21:45:06 GMT
Also don't forget that a fireball is fuel in search of oxygen, therefore it will be the width of the corridor and it will seek out the oxygen in the side-chamber if there is still fuel to burn.
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Post by silverdragon on Dec 4, 2012 9:42:05 GMT
Thinking on this as suggested by Fluid Dynamics... take a hose and a number of "T" piece connections, link them up, like a main road with T junctions off it kind of thing, does the water go straight ahead or get diverted down those T junctions....
.......I know it goes down the junctions just the same speed as it goes straight ahead......
So saying that, I suggest that the fireball down a corridor WILL divert sideways, even if slightly, your goina get burned?...
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Post by WhutScreenName on Dec 4, 2012 14:27:42 GMT
Exactly as I thought. I do like the examples you've all given though, thanks for making it simple for us simple folks  |
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Post by silverdragon on Dec 5, 2012 9:18:22 GMT
I make it simple so even I understand it?....
Dunno how everyone else manages, but I like simple solutions, and I think I may have just been a founder member of the K-I-S-S foundation.... lol.... ;D
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Post by the light works on Dec 6, 2012 2:46:54 GMT
incandescently hot gas has a lot less momentum and a lot more aerodynamic drag than water. I think you might be better considering taking a trough and pitching a bucket of colored water into it than by squirting water down a hallway.
as for my opinion; I would expect ducking around a corner to be better than staying in the line of fire, but not much.
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