由买买提看人间百态

boards

本页内容为未名空间相应帖子的节选和存档,一周内的贴子最多显示50字,超过一周显示500字 访问原贴
Computation版 - Ask help for a simple question
相关主题
[转载] Re: a seemly simple question, but3d Spherical particle packing Q
请教fortranArena software 7.01
Variable size multi-dim arrays (C/C++)zzWho knows Sphere Packing simulation?
请问matlab能不能算一个graph的diameter?Ask for data
research被卡住,极度想撞墙Asking for help with Amazon EC2
Matlab 算数值积分帮忙看看这个看似简单的问题
明天面試engineer工作, 自己沒學過CS.[合集] 如何让一个嵌套循环程序并行处理?
求助:麻烦看看关于2个python的题目Help on a very simple question
相关话题的讨论汇总
话题: ask话题: packing话题: diameter话题: circular话题: simple
进入Computation版参与讨论
1 (共1页)
a****a
发帖数: 21
1
a circular plate has diameter x, and many small balls has diameter y, x>y,
what is the maxmum number of balls can be placed on the circular plate?
a****a
发帖数: 21
2
I just need a solution to solve a practical problem currently. Thanks for any
idea or suggestion or even any thought.

【在 a****a 的大作中提到】
: a circular plate has diameter x, and many small balls has diameter y, x>y,
: what is the maxmum number of balls can be placed on the circular plate?

k******g
发帖数: 15
3
Your problem is related to 2-Dimensional packing.
For the 3-Dimensional ball packing, as I know, the minimum packing ratio is
52.36%, the maximum packing ratio is 74.06%, and the random close packing
ratio is about 63%. The 2-D cases also have been well developed, but
unfortunately,I do not remember the exact numbers now. You can try google or
some powder technology handbook.
a*******r
发帖数: 7558
4
just search 'sphere packing' on isi or your library
many problems in 2-d packing are well understood already.
BTW, Salvador Torquto pointed out that rcp is ill-defined
1 (共1页)
进入Computation版参与讨论
相关主题
Help on a very simple questionresearch被卡住,极度想撞墙
[dpreview] Rokton develops circular sensorMatlab 算数值积分
讨论个subarray sum的变种问题 (转载)明天面試engineer工作, 自己沒學過CS.
说不定包子跟卖客和丽丽一样晚上在炒美股求助:麻烦看看关于2个python的题目
[转载] Re: a seemly simple question, but3d Spherical particle packing Q
请教fortranArena software 7.01
Variable size multi-dim arrays (C/C++)zzWho knows Sphere Packing simulation?
请问matlab能不能算一个graph的diameter?Ask for data
相关话题的讨论汇总
话题: ask话题: packing话题: diameter话题: circular话题: simple