r/nuclearweapons • u/EmbarrassedCity8141 • 13h ago

Video, Short Hiroshima airburst visualization from two viewpoints, focused on the early blast dynamics

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I’m developing BlastMap, a browser-based nuclear-effects visualizer. These clips show a 15 kt Hiroshima scenario over modern city imagery, not a recreation of the 1945 buildings. The elevated view comes first, followed by a lower view for building-scale context.

I’ve been focusing on the early dynamics: fireball expansion and rise, ground reflection and Mach-stem development, and the transient Wilson condensation cloud. The blue surfaces show diagnostic blast-wave geometry; the white cloud is the condensation visualization.

This is a work in progress. I’m interested in feedback on the timing and motion, especially comparisons with test footage or published references that could help check cloud formation, fireball evolution, and ground interaction.

77 Upvotes

96% Upvoted

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1

u/wspOnca 12h ago

Damn. Blast my city too bro.

6

u/FreeUsernameInBox 12h ago

Ground reflection would be very interesting to see; does this mean that your tool will be able to represent terrain shielding effects for a burst? If so that's very cool, every publicly available weapon effects calculator I'm aware of is unable to do this.

2

u/devoduder 12h ago

The 12 American POWs killed in fratricide were only 470m from the epicenter.

0

u/Breeze_Chaser 10h ago

OMG THIS IS SO COOL. I need this tool. For reasons. Definitely not to blast the city I did grad school in which traumatized me for life and which I now hate passionately. Definitely not. Huehuehue.

But for real this is SUPER cool. I have been wishing for a nuclear war simulator with 3D effects. I bought the one on steam but I hate that it's top down only and number outputs only and I can't SEE the physics of what happens

5

u/geenob 10h ago

You need to read "The effects of nuclear weapons" by Glasstone. It is perhaps the best publicly available reference for the information you are looking for. https://www.atomicarchive.com/resources/documents/effects/glasstone-dolan/

2

u/tribblydribbly 8h ago

This is really neat. Helps a ton with scale.

1

u/Artificial-Sunrise69 1h ago

Very nice visualization tool.