
#1
Feb2813, 06:35 AM

P: 16

I have a question about diffrence between ways of defining a certain plate like (3^1/2)x+y+17.3=0 to MCNP code .for example I know we can define it to MCNP with 15 p 3 2 0 6 but I couldn't understand this method 15 10 0 5 8.66 0 10 0 1




#2
Mar113, 12:57 AM

P: 28

Do you use general plane with equation Ax+By+Cz+D=0, how can obtain A=3, B=2, C=0, D=6 ? What 15 mean, perhaps surface number?




#3
Mar513, 03:08 AM

P: 16





#4
May713, 12:55 PM

P: 59

how to figure out of MCNP code writing?The first one 15 p 3 2 0 6 looks like a plane surface, called surface 15, and defined by Ax + By + Cz – D = 0. So this is A=3, B=2, C=0, and D=6. That is, this corresponds to 3A + 2Y  6 = 0 But the second one 15 10 0 5 8.66 0 10 0 1 seems to be missing something. If it's supposed to be a surface it needs a keyword to indicate the kind of surface. Is there maybe a number and the letters xyzp missing? If it was something like this 20 xyzp 15 10 0 5 8.66 0 10 0 1 that would be a plane, called surface 20, through the following three points. (15,10,0) (5, 8.66, 0) (10,0,1) Does this help? Dan 


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