There are seventeen user-callable subroutines in the package. All subroutine names begin with MC. The following letter is either an S, an A, or an M, indicating whether pure species (S), mixture-averaged (A), or multicomponent (M) properties are returned. The remaining letters indicate which property is returned: CON for conductivity, VIS for viscosity, DIF for diffusion coefficients, CDT for both conductivity and thermal diffusion coefficients, and TDR for the thermal diffusion ratios.

A call to the initialization subroutine MCINIT must precede any other call. This subroutine is normally called only once at the beginning of a problem; it reads the Linking File and sets up the internal storage and working space - arrays IMCWRK and RMCWRK. These arrays are required input to all other subroutines in the library. Besides MCINIT there is only one other non-property subroutine, called MCPRAM ; it is used to return the arrays of molecular parameters that came from the database for the species in the problem. All other subroutines are used to compute either viscosities, thermal conductivities, or diffusion coefficients. They may be called to return pure species properties, mixture-averaged properties, or multicomponent properties.

In the input to all subroutines, the state of the gas is specified by the pressure in dynes per square centimeter, temperature in Kelvin, and the species mole fractions. The properties are returned in standard CGS units. The order of vector information, such as the vector of mole fractions or pure species viscosities, is the same as the order declared in the Gas-phase Kinetics Pre-processor input.

Here we provide a short description of each subroutine according to its function. In Alphabetical Listing of the Transport Subroutine Library we list the subroutines in alphabetical order and provide a longer description of each subroutine including call-list details.