gmane.comp.mathematics.ascend.user

(no subject)

Shubham Tomar — 2013-05-20T09:41:43

Hi all !

Here's a simple Feed--->Reactor--->Product model in ASCEND.

Regards.
Shubham
(*A Simple Feed--->Reactor--->Product Flowsheet in ASCEND*)
(*Shubham Singh Tomar*)



REQUIRE "atoms.a4l";
PROVIDE "simpleflowsheet01.a4c";

(*Defining Feed Characteristics*)

MODEL mixture;

components                      IS_A set OF symbol_constant;
        y[components]                   IS_A fraction;

        SUM[y[i] | i IN components] = 1.0;

  METHODS

    METHOD default_self;
    END default_self;

    METHOD specify;
        FIX y[components];
        FREE y[CHOICE[components]];
    END specify;

    METHOD reset;
        RUN ClearAll;
        RUN specify;
    END reset;

END mixture;

MODEL molar_stream;

componentsIS_A set OF symbol_constant;
stateIS_A mixture;
        Ftot,f[components]IS_A molar_rate;

components, state.componentsARE_THE_SAME;


FOR i IN components CREATE
    f_def[i]: f[i] = Ftot*state.y[i];
END FOR;

  METHODS

    MET

(no subject)

Shubham Tomar — 2013-05-19T11:24:28

Hi everyone !

I tried plotting the Flow characteristics for an Equal percentage
valve using MATLAB.
The theory for the valve and its characteristics can be read here,
https://controls.engin.umich.edu/wiki/index.php/ValveModeling#Flow_Characteristics.

% Flow Characteristics for an Equal percentage Valve in MATLAB
% Shubham Singh Tomar


R = 50;
Cv2 = 115; ; % units of gpm/(psi^0.5)
q2 = 15:1:220; % feasible flow rates, gpm
delPv2 = 40 - 30*(q2/200).^2 ; % psi
lift2 = 1 + log(q2./(Cv2*sqrt(delPv2))) / log(R);
figure, plot(lift2,q2,'r--','LineWidth',2)
xlabel('lift'), ylabel('q , gal/min'), grid
title(['Equal Percentage Valve R = ' int2str(R)'])

Regards
Shubham

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Re: (no subject)

John Pye — 2013-05-15T04:30:52

Hi Shubham

We're current in the process of evaluating student proposals, with 
annoucements to be made (I believe) next week.

This particular project we are hoping will be mentored by either Kannan 
Moudgalya or Krishnan Chittur, or possibly both. The chosen student will 
need to have chemical engineering skills, particularly demonstrated 
familiarity with the unit operations in process plants and ability to 
convert them into equation-based descriptions in ASCEND.

Cheers
JP

On 11/05/13 00:32, Shubham Tomar wrote:


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GSOC 2013

Aaditya C — 2013-05-01T18:49:44

Hi JP,

I am a final year student from NSIT Delhi. I am interested in the
Project "Parameter
handling for the canvas-based modeler".

I had an earlier conversation with Grivan, regarding this project, but
unfortunately I couldn't follow-up, due to my semester exams.
*Are you still considering new students, who are interested in applying ?*

I went through the Ascend Developer's manual. I checked out the code from
Ascend trunk and ran ascend, I also ran some sample transistor Codes(I am
ECE student) from http://ascend4.org/User:Divyanshu and it worked fine.
Screen shot of the output :-
[image: Inline image 1]
 I also went through the code base just to get the idea of workflow and get
the overall gist.

Like Grivan said, I went through
http://ascend4.org/Canvas-based_modeller_for_ASCEND to see the previous
work done on the project. I checked out the code the saheb-canvas branch,
and went through the installation steps, but got the following error :-

*File "../../ascxx/ascpy.py", line 900, in load*
*    def lo

Re: (no subject)

Shubham Tomar — 2013-05-10T14:32:33

Hi all !

There hasn't been lot of exchange of mails on the mailing list lately.
I've some general questions to ask regarding the "Chemical engineering
domain-specific project".

Who is going to mentor the aforementioned project ?
And, what are the skills that the mentors expect a student should
posses in order to work on the project.

Thanks.
Regards.
Shubham S. Tomar.

On 5/9/13, Shubham Tomar <tomarshubham24-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

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Re: (no subject)

Shubham Tomar — 2013-05-09T02:25:29

Hi all !

I'm going through ASCEND's code trunk
http://bazaar.launchpad.net/~jdpipe/ascend/trunk/files/head:/models/,
and am writing similar models to get accustomed to the modeling
language. Any advice regarding anything else I should do, or a model
you want me to write ?
Ksenija : The dynamic modeling tutorial was great. Thanks.

Regards.
Shubham.

On 5/7/13, Shubham Tomar <tomarshubham24-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

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Re: (no subject)

Ксения Бестужева — 2013-05-08T06:10:30

Hi Shubham!

There is some documentation concerning the syntax for dynamic modelling here:
http://ascend4.org/Dynamic_modelling and here: http://ascend4.org/images/6/61/Book.pdf.
In this book there is a detailed tutorial in chapter 12.1. If you have some more concrete
questions, please ask them.

Last summer I implemented the new syntax, though now it is availiable only in my branch.
If you want, you can check out the code from my branch (code/branches/ksenija). This 
syntax is more convenient and easy to understand. I have written a short description of
how to use it on my page (http://ascend4.org/Ksenija_Bestuzheva#Final_report.) and
some more detailed documentation in a lyx file:
http://code.ascend4.org/viewvc/code/branches/ksenija/doc/howto-dersyntax.lyx?view=markup

Best regards, Ksenija


On 07/05/13, 10:30 +05:30 Shubham Tomar <tomarshubham24-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:
 
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Re: (no subject)

Shubham Tomar — 2013-05-07T05:00:16

Hi all !

I'm going through ASCEND's code trunk
http://bazaar.launchpad.net/~jdpipe/ascend/trunk/files/head:/models/ ,
and I'm finding the models with differential equations a bit difficult
to understand, not the physical interpretations of the model but the
coding/syntax part of it. Can anyone please prescribe some tutorial
regarding the specific topic ?

Thanks
Regards
Shubham Singh Tomar

On 5/6/13, Shubham Tomar <tomarshubham24-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and 
their applications. This 200-page book is written by three acclaimed 
leaders in the field. The early access version is available now. 
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may

GSOC2013

John Pye — 2013-04-30T23:51:49

Hi all

Just wanted to mention that the deadline for GSOC2013 student proposals 
is coming up quite soon now. Please submit a proposal if you're interested!

http://ascend4.org/GSOC2013
http://www.google-melange.com/gsoc/org/google/gsoc2013/python

Please let me know if there's anything about the process that's not clear.

Cheers
JP

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Re: ASCEND GSOC2013

Shubham Tomar — 2013-04-28T10:46:58

Hi all !

I'm trying to write my proposal for GSoC'13 to work on "Chemical
engineering domain-specific models" project. Although, the Ideas page
does very well mentions the tasks students will have to work on (
validating current models with well-known chemical engineering
processes and making the reusable ), still, may someone help me write
the time-line based distribution of projects / tasks.
Also, where may I submit the proposal, once get completed.

Thanks.
Any help would be highly appreciated.
Regards
Shubham S. Tomar




On 4/27/13, Shubham Tomar <tomarshubham24-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

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Re: ASCEND GSOC2013

Shubham Tomar — 2013-04-27T15:31:07

Hi all !
Here's a Python code giving composition of a "batch distillation" as a
function of time.
Although, the problem is not directly from the book prescribed "The
elementary principles of chemical processes" (its from another book
from our college syllabus), but is quite general in Chemical
engineering.

Thanks.
Shubham Singh Tomar.
#-------------------------------------------------------------------------------
# Name:        Batch distillation
# Purpose:
#
# Author:      Shubham
#
# Created:     27/04/2013
# Copyright:   (c) Shubham 2013
# Licence:     <your licence>
#-------------------------------------------------------------------------------

from scipy import *
from scipy.integrate import odeint
from matplotlib import *
from pylab import *

D = 10
a = 2.41
W_int = 100
x_w_int = 0.5

t = arange(0,6,1)

def batch(x_w,t):
    W_t = -D*t + W_int
    y = a*x_w/(1.0 + x_w*(a-1.0))
    dx_wdt = -(D/W_t)*(y-x_w)
    return dx_wdt
x_w_sol = odeint(batch, x_w_int, t)

figure()

Re: ASCEND GSOC2013

John Pye — 2013-04-26T02:33:40

Hi Shubham

I hope that you will submit a proposal for GSOC2013, but please note 
that the example files you have provided are all, I would say, rather 
trivial. You should try to work on demonstrating solutions of more 
complex problems eg requiring simultaneous solution of nonlinear 
equations, and so on, in order to demonstrate your skill at a higher level.

Cheers
JP

On 26/04/13 00:22, Shubham Tomar wrote:


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Re: ASCEND GSOC2013

Shubham Tomar — 2013-04-25T14:22:37

Hi all !
I'm in between my university exams right now, and hence won't be able
to spare much time. I'm attaching some Python codes I wrote solving
problems in the book "Elementary Principles of Chemical Processes :
Richard M. Felder, Ronald W. Rousseau". These are very simple codes
and I'll be sending some more better / more challenging codes along
the way.
Please let me know if these are of any relevance w.r.t the skills
required to work on "Chemical engineering domain-specific" project.

Thanks.
Regards,
Shubham Singh Tomar
Chemical Engineering

On 4/19/13, John Pye <john.pye-FCV4sgi5zeUQrrorzV6ljw< at >public.gmane.org> wrote:
#-------------------------------------------------------------------------------
# Name:        Example 2.7-3
# Purpose:
#
# Author:      Shubham
#
# Created:     24/04/2013
# Copyright:   (c) Shubham 2013
# Licence:     <your licence>
#-------------------------------------------------------------------------------

# Curve fitting on Semilog and Log plots

from pylab import

[ASCEND} Fix for Bug 0000563

Saket Choudhary — 2013-04-24T08:33:22

Hi All,

I have tried to fix Bug 0000563 (http://bugs.ascend4.org/view.php?id=563
(0000563: canvas does not expand to fill window when window is resized)


This is my first contribution to ASCEND.
I am using saheb-canvas branch for my development

Please Let me know if the patch is merge ready.



Thanks
Saket Choudhary
https://github.com/saketkc
http://home.iitb.ac.in/~saket.kumar

Junior Undergraduate
Department of Chemical Engineering
IIT Bombay
India

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Re: Gsoc 2013

Shubham Tomar — 2013-04-24T03:58:22

Hi all !
I'm in between my university exams right now, and hence won't be able
to spare much time. I'm attaching some Python codes I wrote solving
problems in the book "Elementary Principles of Chemical Processes :
Richard M. Felder, Ronald W. Rousseau". These are very simple codes
and I'll be sending some more better / more challenging codes along
the way.

Thanks.
Regards,
Shubham Singh Tomar
Chemical Engineering


On 4/23/13, Pallav Tinna <pallav.tinna1604-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:
#-------------------------------------------------------------------------------
# Name:        Example 7.2-2
# Purpose:
#
# Author:      Shubham
#
# Created:     24/04/2013
# Copyright:   (c) Shubham 2013
# Licence:     <your licence>
#-------------------------------------------------------------------------------

# Elementry principles of Chemical processes
#Chapter 7: Energy and Energy balances

h = float(input("Enter the height: "))
q = float(input("Enter the flow rate: "))
g = 9.81
p

Re: Gsoc 2013

Pallav Tinna — 2013-04-23T14:47:37

Hi Mentors!
                Recently, I submitted two patches for the bugs
http://bugs.ascend4.org/view.php?id=572 and
http://bugs.ascend4.org/view.php?id=530. I have added the files and notes
in the tracker itself. Working on these bugs, have made me familiar with
the coding structure of the pygtk GUI.

I would like to contribute to projects, GUI improvements and GUI update to
GTK3 as part of GSOC this year. Help me with your guidance.


Regards,

Pallav Tinna
3rd Year Undergraduate Student
Computer Science and Engineering

International Institute of Information Technology,Hyderabad
IIIT-H (India)



On Thu, Mar 14, 2013 at 4:53 PM, Krishnan Chittur <chitturk-NBwVDkvA+Js< at >public.gmane.org> wrote:

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Re: ASCEND GSOC2013

John Pye — 2013-04-19T03:39:13

Hi Shubham

This topic of definitely of strong interest to us, but as I mentioned, 
we're unsure how many students we'll be allocated. To maximise your 
chances, you should spend whatever time you can spare to demonstrate 
your abilities and provide us with some clear & useful contributions in 
advance of the application deadline.

Cheers
JP

On 19/04/13 13:10, Shubham Tomar wrote:


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Re: ASCEND GSOC2013

Shubham Tomar — 2013-04-19T03:10:13

Hi and congratulations !

I would like to know if ASCEND would still take the "Chemical
engineering domain-specific models" project any further ? I asked
Priya ma'am the question and she wasn't very sure either.

Thanks.

On 4/19/13, John Pye <john.pye-FCV4sgi5zeUQrrorzV6ljw< at >public.gmane.org> wrote:

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ASCEND GSOC2013

John Pye — 2013-04-19T01:43:45

Hi all

Good news! We have arranged for the Python Software Foundation to act as 
an 'umbrella' organisation for ASCEND for GSOC2013. They haven't updated 
their page yet, but we should appear on their list very soon:
http://www.google-melange.com/gsoc/org/google/gsoc2013/python
http://wiki.python.org/moin/SummerOfCode/2013

I anticipate that we'll only be allocated a reduced number of students, 
perhaps just 2-3 this year, compared to 5-6 we mentored in previous 
years, as a result of this new arrangement. But it's good to know that 
the opportunity still exists, especially for those of you who have been 
in contact with us already for a while.

Cheers
JP


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2nd Call For Papers, 20th Annual Tcl/Tk Conference 2013

Andreas Kupries — 2013-04-09T20:21:41

[[ Notes:

   Karl Lehenbauer of FlightAware is confirmed as our Keynote speaker.
   http://www.flightaware.com

]]

20'th Annual Tcl/Tk Conference (Tcl'2013)
http://www.tcl.tk/community/tcl2013/

September 23 - 27, 2013
Bourbon Orleans Hotel
New Orleans, Louisiana, USA
http://www.bourbonorleans.com/

Important Dates:

Abstracts and proposals due   June      22, 2013
Notification to authors       August     5, 2013
Author materials due          September  2, 2013
Tutorials Start               September 23, 2013
Conference starts             September 25, 2013

Email Contact:                tclconference-/JYPxA39Uh5TLH3MbocFFw< at >public.gmane.org

Submission of Summaries

Tcl/Tk 2013 will be held in New Orleans, Louisiana, USA from September
23 - 27, 2013. The program committee is asking for papers and
presentation proposals from anyone using or developing with Tcl/Tk
(and extensions). Past conferences have seen submissions covering a
wide variety of topics including:

* Scientific and engineering applications
*

Re: ASCEND GSOC 13

Ксения Бестужева — 2013-04-09T17:44:15

Hi Shubham!

I am just a student, but I believe that we can contribute anyway. Working with
ASCEND is real fun!

It will be good if John finds some 'umbrella' organization which can help us.
If not, for me personally a nice umbrella with an 'ASCEND' label will do as a 
prize ;)

Best regards, Ksenija
------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter