The ~chbe301/matlab Directory
[Table of Contents |Chbe301
HomePage]
This list of the Chbe301 matlab functions should be very helpful in
finding the names and brief descriptions of all the functions
described in these notes. In order to get more information,
help should be used to find out how the function is actually
used. The help comments in the functions list all the arguments to
the functions and the arrays returned by the functions. You may also
find functions that deal with particular categories by using the
lookfor command. If we use it to see how many of the functions
deal with reactions, we find:
>> lookfor reaction
kequil - sets the equilibrium reactions for gas phase reactions
tecon1.m: % tecon1: trial and error function for calculating reaction rates
tecon2.m: % tecon2: trial and error function for calculating reaction rates
enth2 - Finds enthalpy change for reactions in units of J/mol
Kvalp - Gives the chemical equilibrium ratio for a reaction & stream
reactr.m: % reactr: calculates reaction rates for competing reactions (use with react)
swgs.m: % swgs: Find the rate of the water gas shift reaction
BRUSSODE Stiff problem modelling a chemical reaction (the Brusselator).
HOUGEN Hougen-Watson model for reaction kinetics.
Index
I. chemeq
II. datbas
III. engmods
IV. humid
V. massmods
VI. misc
VII. pichelps
VIII. specmods
IX. utilities
X. vle
Matlab functions for Chbe 301:
-
- chemeq
- Determines character representation of one equation from
stoichiometric coef.
- chemeqs
- Determines character representation of equations from
stoichiometric coef.
- halfeq
- Produces half of a chemical equation.
- kequil
- Sets the equilibrium constants for specified reactions.
- Kvalp
- Gives the chemical equilibrium ratio for a reaction and
stream.
- reactee
- Aid in determining equilibrium composition of a mixture
Back to local index.
- sethcp
- Loads thermo data into global variables for start301.
- setvars
- Sets Matlab arrays stored in the data file
- start301
- or in Section 3.1
- Sets variable and makes mass and energy balance arrays
global
- create
- Used to add data to databases
- unpack
- Unpacks data out of long vectors read from data file
Back to local index.
- dsplaye
- Used by showe to do most of the work.
- enth1
- Calculates the enthalpy change from t1 to t2.
- enth2
- Same thing as enth1, but uses a matrix multiply.
- enth3
- Determines the enthalpy change for multiple compounds.
- HinkJ
- Calculates enthalpies for compounds relative to elements.
- mHinkJ
- Calculates enthalpies for compounds relative to elements
allowing multiple temperatures as well as compounds. mhinkj Same
as mHinkJ,
- mixe
- The mixer function for energy balance.
- reacte
- The reactor function for energy balance: only one exit
stream.
- reacten
- Extends reacte to allow multiple outlets.
- sepe
- The separator function for energy balance.
- sepen
- General purpose separator module.
- setne
- Sets stream information in ne.
- showe
- Displays the data in ne in a readable form.
- splite
- Energy balance splitter.
Back to local index.
- humde
- Gives the enthalpy of humid air.
- humdv
- Gives the volume of humid air.
- humidity
- Sets up data needed for the humidity functions.
- masrat
- Calculates the mass ratio of water to dry air for a given
humidity and temperature of the air.
- molrat
- Calculates the molar ratio of water to dry air for a given
humidity and temperature of the air.
Back to local index.
- showm
- Gives a compact display of the flow rates in ns.
- dsplay
- Used by showm to do most of the work.
- mix
- Simulates the behavior of a mixer.
- react
- Simulates the behavior of a reactor.
- See reactr as well
- sep
- Simulates the behavior of a separator.
- See fraco and sept
as well
- split
- Simulates the behavior of a splitter.
Back to local index.
- er28
- Function for solving example 2.8.
- ex516
- Gives the function for solving example 5.16.
- exr828
- Function for solving problem 8.28.
- g312
- Solves example 3.12.
- intcp
- Creates "icp" variables
- iter
- Method of solving problem 5.33.
- moltomas
- or in moltomas
- Converts mole fractions to mass fractions.
- p312
- Simulates a combination of units.
- tplot1
- Draws a graph of chemical properties.
- tplot2
- Draws a graph of chemical property data in a different
form.
- tplot3
- Draws a graph of chemical property data, with more properties
available.
- tryf
- Three functions that could be used to solve the flash
Back to local index.
- picfraco
- Fractionator; fraco.
- picmix
- Mass balance mixer; mix.
- picmixe
- Mass and energy balance mixer; mixe.
- picphaseg
- Phaseg.
- picreact
- Mass balance reactor; react.
- picreacte
- Mass and energy balance reactor; reacte.
- picreacten
- Another mass and energy balance reactor; reacten.
- picreactr
- Mass balance reactor; reactr.
- picsep
- Mass balance separator; sep.
- picsepe
- Mass and energy balance separator; sepe.
- picsept
- Fractionator; sept.
- picsplit
- Mass balance splitter; split.
- picsplite
- Mass and energy balance splitter; splite.
Back to local index.
VIII. specmods/ Modules that serve a special
function
- fraco
- Gives the fraction of compounds sent to the distillate in a
fractionator.
- phase
- Tries various fractions of solutes sent to a phase.
- phaseg
- Calculates solute distribution in 2-phase separation
- reactr
- Determines the reaction rates of two reactions.
- sept
- Analyzes a fractionator.
Back to local index.
- addcol
- Catenates two or more arrays, adds columns.
- at
- Converts temperatures to Kelvin.
- atk
- Converts the given temperature to Kelvin.
- baleq
- Used in setstc to set up the global matrix stoic
- cext
- extends a character string to n columns
- cgrp
- Groups 1 to 8 strings into a matrix
- charmx
- Makes a character array from a numerical matrix.
- csum
- Used in dsplay and dsplaye to sum columns.
- disetne
- Displays inlet flows; used in isetner and isetnev.
- goodmenu
- Goodmenu calls menu but checks to make sure the response is
reasonable
- mgrp
- Adds a vector to the bottom of a matrix.
- nchar
- Creates n copies of a character string.
- prntmx
- Prints the flow matrix for energy balances
- rmbl
- removes blanks from a character vector (text)
- ssec1
- Uses linear interpolation to approximate a root of
f(x)=0.
- ssec2
- Calls ssec1 n times to find a root of f(x)=0.
- vweg1
- Wegstein procedure for finding roots of multiple
equations.
- vweg2
- Program that executes vweg1.
Back to local index.
- bubpt
- Determines the bubble point of a mixture.
- dewpt
- Determines the dew point of a mixture.
- dewpt2
- Determine the dew point of a binary mixture.
- fbpdp
- Shows the behavior of the functions used in bubble and dew
point calculations.
- flash
- Finds the vapor fraction and the composition of the liquid and
vapor in a mixture and lists a table of results.
- flashr
- Performs a flash calculation with a table of results.
- flsh
- Returns the ratio of distillate to feed flow for each compound
in a flash.
- kval
- Finds the distribution coefficient. for a set of
compounds.
- teql
- Finds the temperature of compounds when they would have a
given vapor pressure.
- vappr
- Calculates the vapor pressure from the Antoine
coefficients.
- vapprvt
- Just like vappr but does it for a vector of temperatures.
Back to local index.
[Table of Contents |Ceng301
HomePage]
This page last updated: 8/06/98