Interphase Reaction Model Reference - Eulerian Phases

You can use the Interphase Reaction model to define reactions that result in mass transfer between different Eulerian phases.

Table 1. Interphase Reaction Model Reference (Eulerian Phases)
Theory	Interphase Reactions for Multiphase Models
Provided By	Continua > [physics continuum] > Models > Multiphase Interaction > Phase Interactions > [phase interaction] > Models > Optional Models > Interphase Mass Transfer Rate (for Eulerian Multiphase (EMP) only) Continua > [physics continuum] > Models > Multiphase Interaction > Phase Interactions > [phase interaction] > Models > Optional Models (for Volume of Fluid (VOF) and Mixture Multiphase (MMP))
Example Node Path	Continua > Physics > Models > Multiphase Interaction > Phase Interactions > Phase Interaction 1 > Models > Interphase Reaction
Requires	Physics continuum selection: Material: Multiphase Multiphase Model: Eulerian Multiphase (EMP), Volume of Fluid (VOF),Mixture Multiphase (MMP) Energy: Phase Coupled Energy, Segregated Multiphase Temperature Optional Models: Multiphase Interaction Eulerian phase selection: A minimum of two Eulerian phases. For each Eulerian phase, select: Material: Multi-Component Gas, Multi-Component Liquid, or Multi-Component Particle For Eulerian Multiphase (EMP) Eulerian phases only, select one of: Energy: Segregated Fluid Enthalpy, Segregated Fluid Temperature Phase interaction selections: VOF-VOF phase interaction (for Volume of Fluid (VOF) only) MMP-MMP phase interaction (for Mixture Multiphase (MMP) only) Continuous-Dispersed Topology phase interaction or Multiple Flow Regime topology (for Eulerian Multiphase (EMP) only)
Activates	Model Controls (child nodes)	Reactions. See Interphase Reaction: Reactions.

Interphase Reaction > Reactions

Details the reactions taking place between two different Eulerian phases.

[reaction]

The defined reaction Type can only be Interphase.

Reactants: Defines the reactant components of the interphase reaction.

Products: Defines the product components of the interphase reaction.

Properties > Reaction Coefficient

Defines the reaction rate method for the interphase reaction. Following are the methods that can be applied:


Method	Corresponding Method Node
Diffusion Limited User Reaction Rate (for Eulerian Multiphase (EMP) only) Use this method when you have Eulerian particle, gas, or liquid phase components as reactants. The Diffusion Limited User Reaction Rate method limits the reaction rate by the rate of species diffusion. The interphase reaction rate is the minimum of user reaction rate and species diffusion rate to the interface. See Diffusion Limited Reaction Rate.	Diffusion Limited User Reaction Rate Specifies the diffusion limited user Reaction Coefficient in equation Eqn. (3587). With the Diffusion Multiplier, you can scale the diffusion rates in the net reaction rate Eqn. (3592).
First-Order Combined Rate (for Eulerian Multiphase (EMP) only) The first-order combined rate, available when a Eulerian particle phase reacts with a Eulerian gas phase, calculates the effective reaction rate by accounting for both chemical kinetics at the particle surface and diffusion of gas-phase reactant species. The term first-order means that the kinetics reaction rate is first-order with respect to gas-phase reactant species concentration.	First-Order Combined Rate The First-Order Combined Rate node uses its properties to control part of this calculation method, while its sub-nodes Pre-exponent and Diffusion Coefficient provide inputs as scalar profiles. See Eqn. (3760) and Eqn. (3761).
Half-Order Combined Rate (for Eulerian Multiphase (EMP) only) The half-order combined rate, available when a Eulerian particle phase reacts with a Eulerian gas phase, calculates the effective reaction rate by accounting for both chemical kinetics at the particle surface and diffusion of gas-phase reactant species. The term half-order means that the kinetics reaction rate is half-order with respect to gas-phase reactant species concentration.	Half-Order Combined Rate The Half-Order Combined Rate node uses its properties to control part of this calculation method, while its sub-nodes Pre-exponent and Diffusion Coefficient provide inputs as scalar profiles. See Eqn. (3365) and Eqn. (3763).
Second-Order Combined Rate (for Eulerian Multiphase (EMP) only) The second-order combined rate, available when a Eulerian particle phase reacts with a Eulerian gas phase calculates the effective reaction rate by accounting for both chemical kinetics at the particle surface and diffusion of gas-phase reactant species. The term second-order means that the kinetics reaction rate is second-order with respect to gas-phase reactant species concentration.	Second-Order Combined Rate The Second-Order Combined Rate node uses its properties to control part of this calculation method, while its sub-nodes Pre-exponent and Diffusion Coefficient provide inputs as scalar profiles.
User Reaction Coefficient Use this method when you have multiple solids and/or multiple gas/liquids as reactants. The user reaction coefficient allows you to specify custom reaction coefficients.	User Reaction Coefficient The User Reaction Coefficient node functions as a scalar profile. See Eqn. (3587).