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  2 ǰ 1 ʱⰪ ־ 2 ̺ Ǯ
  ۾ : ̳׾ƽ   ID : getnight     ¥ : 13-09-11 17:45     ȸ : 4962    
   ׸2.png (12.4K), Down : 2, 2013-09-11 17:45:00
Fick's 2nd law 2 ̺ ̹Ƿ

̺й Ǯ̴ ǿ װ(и, Laplaceȯ, Bolzman ȯ, Ǯ̰ Ǵ ˰ ֽϴ. 

Ǯ ϴ ٸ Ŀ ϰ ܼ Ȯ(diffusivity) ٴ Ͽ ϴ ü ÷ ҷ ϴµ 

 Ǯ ȵǼ 帳ϴ.

÷Ͽ ڰǰ ʱⰪ ÷Ƚϴ.

 ־ ׸  Ǯ ϴ Ź帳ϴ.


  

ij Stefano   13-09-12 11:07
Ȯ ð̳ 󵵿 ٸ ʹ ٷ ʴ ϴ.  t,x   C ̿Ͽ Ǯϴ ̰ ã . 
http://www.eng.utah.edu/~lzang/images/lecture-4.pdf
     
̳׾ƽ getnight   13-09-12 11:29
˼ Ѱ 帮ڽϴ.

¿ ܺ з (Peq)ϰ permeability value ̻ü ̿Ͽ з¿ ϴ ð ҷ մϴ.

׷ Ǵ ñմϴ.
(п ̺а ãƺôµ ʾƼ 帳ϴ.)

dP/dt=RTAJ/V ǥ ǹǷ ᱹ ÷ ؾ ϴµ ǮϱⰡ Ƴ׿

Ź帳ϴ
ij Stefano   13-09-13 16:23
(1) ̵ Ͼ ü Permeability ̵Ÿ, ̵ ǰ ϴٰ ϸ ̺ Ǯ ϴ. 

1) ̵ӵ q з Ѵ.                      q= K *(Po-P) .......(1)  K=̵ , (2) 
2) ̵ ӹ з Ѵ.  P = n R T/V .........(2)  R,T,V , n P
3) ̵ ӵ ӵ .              q = dn/dt ............(3)     
 
(2) ̺Ͽ dn/dt P Լ Ÿ (1) q ҰϿ ̺й Ͽ P=P1~Peq ϸ ҿð ְ

(2) ̵ K ̵ ܸ Permerability, ̵Ÿκ ̿ؾ ϴ
   

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