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Author Archives: chemecomp
USING PYTHON TO SOLVE CHEMICAL ENGINEERING PROBLEMS
This pdf illustrates how to use the programming language Python to solve the problems posed in the book Introduction to Chemical Engineering Computing, Bruce A. Finlayson, Wiley (20062014). The material mirrors the use of MATLAB in the book, and solves … Continue reading
Error Bounds using the Green’s Function
November 18, 2014 One of the fundamental concepts when solving partial differential equations is the Green’s function. This function allows you to represent the exact solution as an integral. It may be hard to find, and if found, may be … Continue reading
September 2, 2014 – Numerical Results with Rigorous Error Bounds
Have you ever solved a problem numerically and wondered: How accurate is my answer? Oftentimes the only clue you have is how the solution changes (hopefully not much) as you refine the mesh and solve it with more degrees of … Continue reading
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Source Code for Examples is now Available
July 18, 2014 The source code for all the examples in the book has recently been made available by Wiley. They total 26 MB and can be downloaded by going to booksupport.wiley.com and searching on author: Finlayson (or, title or … Continue reading
April 4, 2014 I’ve added a problem to the website http://www.ChemEComp.com for electrochemical polymerization in a series of stirred tanks. Solutions are given as derived in Excel and MATLAB. It is a simple problem with important insight and comes … Continue reading
More problems/solutions with error bounds and help integrating in time in Comsol Multiphysics
March 3, 2014 I’ve added some more problems to the website http://www.ChemEComp.com/MWR that goes along with the book pictured above. Now there are six problems, for eigenvalue problems, boundary value problems in 1D, elliptic boundary value problems, and initial value … Continue reading
A book in revision and an old book resurfaces!
January 15, 2014 I have revised the material in Introduction to Chemical Engineering Computing to be consistent with AspenPlus 8. The interface looks different when you start, but the ultimate windows where you define the problem are the same. It … Continue reading
Introduction to Chemical Engineering
September 7, 2013 I have been updating the material on use of Aspen Plus to include version 8.08.2. The way you get to the various windows is somewhat different, although most of the operating windows look very similar. Thus, some … Continue reading
July 31, 2013 Last week I attended part of the Summer Institute run by the Center for Process and Analytical Chemistry (CPAC – but not the political one!) (www.cpac.washington.edu). While I didn’t attend all the sessions (one of the privileges … Continue reading
Chemical Reactor with Mass Transfer Limitations – in Comsol
In chemical reactors with a catalyst, sometimes the rate of reaction is governed by the concentration on/in the catalyst, which can be different from the concentration in the bulk fluid. This happens when the rate of mass transfer is not … Continue reading