Matlab下三維DLA模型模擬 2007-01-11 19:18 function dla3dv5(Nsum,Wstep) %定義dla函數，Nsum為所生成絮體包含的顆粒數，Wstep為計算過程中所采取的步長

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%本程序內變量的定義 %%

%%radius為顆粒半徑，release為起始釋放半徑 %%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

radius=0.5; %%顆粒半徑

release=2; %%起始釋放半徑 L=200;

Xhalf=floor(L/2);

Yhalf=Xhalf;

Zhalf=Xhalf;

n=1; %粒子計數

N(1)=1;

N(Xhalf)=0;

p(1,:)=[Xhalf Yhalf Zhalf];

szpoints=zeros(L,L,L); %%網格點陣

szpoints(Xhalf,Yhalf,Zhalf)=1; %%種子位置標志

%%釋放初始粒子

theta=2*pi*rand;

gama=pi*rand;

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