Aspen plus Shortcut Tutorial

Shortcut example
Feed stream 100 kg/hr
30%ethanol mass fraction
50ºC inlet Temp
1.2 bar stream pressure
Reflux ratio 4

Ethanol Recovery 90%
Download Link Pdf
https://hotfile.com/dl/206707672/384954f/shortcut.pdf.html

Base method secimi pdflerde yok!
onuda buraya ekledim.....
component secimi yaptiktan sonra asagidaki adimi girmeniz gerekiyor.!
yapacaginiz sisteme gore degisir .....

Process control-overshoot-matlab&simulink basic example...

simulink part

simulink result

matlab part

Command window codes....

sys1 = tf([18],[9,4.2,1]);

t = (0:0.01:125);

step(sys1,t)
matlab result

H. Scott Fogler Example 7-9 -polymath results-Bactera Growth in a Batch Reactor

ODE Report (RKF45)

polymath file

https://hotfile.com/dl/202182217/eca013b/7-9.pol.html

Differential equations as entered by the user
[1] d(Cc)/d(t) = rg-rd
[2] d(Cs)/d(t) = Ysc*(-rg)-rsm
[3] d(cp)/d(t) = Ypc*rg

Explicit equations as entered by the user
[1] kd = 0.01
[2] Ysc = 1/0.08
[3] ks = 1.7
[4] m = 0.03
[5] rd = kd*Cc
[6] cpp = 93
[7] umax = 0.33
[8] Ypc = 5.6
[9] rg = umax*((1-cp/cpp)^0.52)*Cc*Cs/(ks+Cs)-kd*Cc
[10] rsm = m*Cc

Independent variable
variable name : t
initial value : 0
final value : 12

Precision
Step size guess. h = 0,000001
Truncation error tolerance. eps = 0,000001

General
number of differential equations: 3
number of explicit equations: 10

H. Scott Fogler Example 6.6 -polymath-

Fogler ex-6.6

Polymath

Don't forget to select Stiff method!!!!
polymath file....

https://hotfile.com/dl/202153300/34a8e79/66.pol.html

++++++++++++++++++++ODE Report (STIFF)+++++++++++++++++++

Differential equations as entered by the user
[1] d(CH)/d(to) = r1H+r2H
[2] d(Cm)/d(to) = r1m
[3] d(Cx)/d(to) = r1x+r2x
[4] d(Ct)/d(to) = r2t
[5] d(Cme)/d(to) = r1me+r2me

Explicit equations as entered by the user
[1] k1 = 55.2
[2] k2 = 30.2
[3] r1m = -k1*Cm*(CH^(0.5))
[4] r2t = k2*Cx*(CH^0.5)
[5] r1H = r1m
[6] r2H = -r2t
[7] r1x = -r1m-r2t
[8] r2x = -r2t
[9] r1me = -r1m
[10] r2me = r2t

Comments
[1] d(CH)/d(to) = r1H+r2H
mol/ft3
[2] d(Cm)/d(to) = r1m
mol/ft3
[3] d(Cx)/d(to) = r1x+r2x
mol/ft3
[8] k1 = 55.2
(ft3/lbmol )^0.5/h

Independent variable
variable name : to
initial value : 0
final value : 0.5

Precision
Independent variable accuracy. eps = 0,00001
First stepsize guess. h1 = 0,0001
Minimum allowed stepsize. hmin = 0,00000001
Good steps = 1
Bad steps = 0

General
number of differential equations: 5
number of explicit equations: 10

......Inert Membrane Reactor with Catalyst Pellets on the Feed Side....
Polymath Calculation....

|POLVER05_0
d(Fa)/d(V) = ra #mol/min
d(Fb)/d(V) = rb-Rb #mol/min
d(Fc)/d(V) = rc #mol/min
Rb = kc*Cb #mol/m3s
Ft = Fa+Fb+Fc #
Ca = Cto*(Fa/Ft) #mol/dm3
Cb = Cto*(Fb/Ft) #mol/dm3
Cc = Cto*(Fc/Ft) #mol/dm3
Cto = Po/(R*To) #mol/dm3
Po = 8.2 #atm
R = 0.082 #dm3atm/molK
To = 500 #K
ra = -k*Cto*(Ca-Cb*Cc/Kc) #
k = 0.7 #1/min
kc = 0.2 #1/min
Kc = 0.05 #mol/dm3
rb = -ra #
rc = -ra #
Xa = (Fao-Fa)/Fao #
Fao = 10 #mol/dm3
V(0)=0
Fa(0)=10
Fb(0)=0
Fc(0)=0
V(f)=500

Che 384 Reaction Engineering II Problem-I
Problem 10...