Rate-Based Library
- Last UpdatedMay 16, 2024
- 3 minute read
The Rate-Based Library is an example Model Library provided with AVEVA Process Simulation. It includes specialized models that you can use to simulate rate-based distillation in a Column.
Because this Model Library is an example Model Library, you must first import it into AVEVA Process Simulation to use its models in your simulations. You can import this Model Library from the %userprofile%\My Libraries\Examples folder.
The following table lists the models that are available in this Model Library. The table includes very brief descriptions for each model. The Model Help in the AVEVA Process Simulation user interface contains more detailed information for these models. See Open the Model Help for a Model Type or Model Library for more information.
|
Name |
Type |
Description |
|---|---|---|
|
ColRBCondenser* |
Submodel |
Serves as the internal vapor-liquid equilibrium (VLE) condenser submodel for the rate-based ColumnRB model. This submodel allows you to draw a vapor overhead or a liquid distillate and to return a reflux to the top stage. |
|
ColRBReboiler* |
Submodel |
Serves as the internal VLE reboiler submodel for the rate-based ColumnRB model. This submodel allows you to draw a liquid bottom product and to return a boilup vapor to the bottom stage. |
|
ColRBStage* |
Submodel |
Serves as a non-equilibrium VLE stage model for the rate-based ColumnRB model. |
|
ColumnRB |
Model |
Models the fractionation of vapor and liquid mixtures. This model applies a non-equilibrium, rate-limited VLE stage model for the rigorous solution of multicomponent distillation. |
|
DefEnhancement |
Submodel |
Serves as the default replaceable submodel for mass transfer enhancement in the diffusion layers modeled in the DiffusionFluxes submodel in the ColumnRB model. |
|
DefRateRB |
Submodel |
Serves as a template for custom reaction rate submodels to be used in a ColumnRB model and provides a basic framework for their development. You should use the reaction rate submodel as the Reaction model in the Fluid Type that the ColumnRB model uses. |
|
DiffusionFluxes* |
Submodel |
Calculates molar diffusion fluxes based on the Maxwell-Stefan approach for multicomponent mass transfer. The fluxes account for binary diffusion coefficients, binary mass-transfer coefficients, and equipment design parameters that characterize the geometry and the hydraulic operation. |
|
DiffusivityLiquid |
Submodel |
Provides data for the calculation of binary diffusion coefficients. This submodel is a replaceable submodel for the DiffusionFluxes model. It provides the coefficients CoefD1 to CoefD8. It calculates these coefficients based on physical pure component data and operational conditions. |
|
DiffusivityVapor |
Submodel |
Provides data for the calculation of binary diffusion coefficients. This submodel is a replaceable submodel for the DiffusionFluxes submodel. It provides the coefficients CoefD1 to CoefD8. It calculates these coefficients based on physical pure component data and operational conditions. |
|
HTCChiltonColburn |
Submodel |
Calculates the vapor and liquid heat-transfer coefficient in relation to the phase-specific average binary diffusion coefficient and binary mass-transfer coefficient. This approach is known as the Chilton-Colburn Analogy. It is a replaceable heat transfer submodel for the ColumnRB model. |
|
HTCConst* |
Submodel |
Specifies the vapor and liquid heat-transfer coefficient as a simple constant value. It is a replaceable heat transfer submodel for the ColumnRB model. |
|
MTCRandomPacking |
Submodel |
Provides data for the calculation of binary mass-transfer coefficients. This submodel is a replaceable submodel for the DiffusionFluxes submodel. It provides the coefficients CoefMTC1 and CoefMTC2. It calculates these coefficients based on thermophysical fluid data, operational conditions, and the random packing geometry. |
|
MTCStructuredPacking |
Submodel |
Provides data for the calculation of binary mass-transfer coefficients. This submodel is a replaceable submodel for the DiffusionFluxes submodel. It provides the coefficients CoefMTC1 and CoefMTC2. It calculates these coefficients based on thermophysical fluid data, operational conditions, and the structured packing geometry. |
* Only Model Writers can view these submodels.