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CHEMKIN 2 DOWNLOAD: How to Get and Use the Software for Chemical Kinetics Modeling

CHEMKIN is a software tool for solving complex chemical kinetics problems. It is used worldwide in the combustion, chemical processing, microelectronics and automotive industries, and also in atmospheric science. It was originally developed at Sandia National Laboratories and is now developed by a US company, Reaction Design.

If you are interested in using CHEMKIN for your research or engineering projects, you might be wondering how to get and use the software. In this article, we will provide you with some information and tips on how to download, install and run CHEMKIN 2, the second version of the software that was released in 1995.


How to Download CHEMKIN 2

CHEMKIN 2 is not a free software, so you will need to purchase a license from Reaction Design or one of its authorized distributors. You can find more information about the pricing and licensing options on the [official website] of CHEMKIN. Alternatively, you can contact Reaction Design by email at or by phone at +1-858-550-1920.

Once you have obtained a license, you will receive a download link and an activation code for CHEMKIN 2. You can use the link to download the software package as a zip file. The package contains the source code, documentation, examples and utilities of CHEMKIN 2.

How to Install CHEMKIN 2

To install CHEMKIN 2, you will need to unzip the downloaded file and copy the contents to a directory of your choice. You will also need to have a Fortran compiler installed on your computer, such as Intel Fortran or GNU Fortran. You can find more information about the supported compilers and platforms on the [installation guide] of CHEMKIN 2.

After you have copied the files and installed a compiler, you will need to edit some configuration files to specify the compiler options and paths. You can find detailed instructions on how to do this on the installation guide as well. Once you have edited the files, you can run a makefile to compile and link the CHEMKIN 2 libraries and executables.

Finally, you will need to activate your license by running a utility called cklic.exe and entering your activation code. You can find more information about how to do this on the [licensing guide] of CHEMKIN 2.

How to Use CHEMKIN 2

CHEMKIN 2 consists of several subroutines and programs that can be used for different types of problems involving gas-phase kinetics, equilibrium and transport properties. Some of the main programs are:

  • SENKIN: A zero-dimensional sensitivity analysis code that can simulate homogeneous reactors with constant volume or pressure.

  • PREMIX: A one-dimensional flame code that can simulate laminar premixed flames with specified inlet conditions.

  • EQUIL: An equilibrium calculation code that can compute the equilibrium composition and thermodynamic properties of a gas mixture.

  • PSR: A perfectly stirred reactor code that can simulate non-premixed combustion with specified residence time and inlet conditions.

  • SHOCK: A shock wave code that can simulate shock tube experiments with specified initial conditions.

To use these programs, you will need to prepare some input files that specify the problem parameters, such as the reaction mechanism, initial conditions, boundary conditions, output options, etc. You can find examples of input files for each program in the examples directory of CHEMKIN 2. You can also find more information about how to create and modify input files on the [user's manual] of CHEMKIN 2.

Once you have prepared your input files, you can run the corresponding program by typing its name followed by the name of the input file in a command prompt. For example, to run SENKIN with an input file called senkin.inp, you would type:

senkin senkin.inp

The program will then read your input file and perform the calculations. Depending on the problem size and complexity, this may take from a few seconds to several minutes or hours. The program will also generate some output files that contain the results of the simulation, such as concentration profiles, temperature profiles, reaction rates, sensitivity coefficients, etc. You can find more information about how to interpret and analyze the output files on the user's manual as well.


CHEMKIN 2 is a powerful and versatile software tool for chemical kinetics modeling. It can help you understand and optimize various processes involving gas-phase reactions, such as combustion, chemical processing, microelectronics and atmospheric chemistry. In this article, we have provided you with some information and tips on how to download, install and use CHEMKIN 2. We hope that this article has been helpful and that you will enjoy using CHEMKIN 2 for your research or engineering projects.


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