## 16.4. Miscellaneous Variables

Note: Variables with names shown in bold text are not output to CFD-Post. However, some of these variables can be output to CFD-Post by selecting them from the Extra Output Variables List on the Results tab of the Solver > Output Control details view of CFX-Pre.

In the Availability column:

- A number represents the user level (1 indicates that the variable appears in default lists, 2 and 3 indicate that the variable appears in extended lists that you see when you click )

- A indicates the variable is available for mesh adaption

- C indicates the variable is available in CEL

- DT indicates the variable is available for data transfer to ANSYS

- M indicates the variable is available for monitoring

- P indicates the variable is available for particle user routine argument lists

- PR indicates the variable is available for particle results

- R indicates the variable is available to be output to the results, transient results, and backup files

- RG indicates the variable is available for real gases

- TS indicates the variable is available for transient statistics

Long Variable Name | Short Variable Name | Units | Availability | Definition
--- | --- | --- | --- | ---
Aspect Ratio | aspect ratio | [ ] | 2 C, M, R, TS |
Autoignition | autoignition | [ ] | 1 A, C, M, R, TS |
Boundary Scale | bnd scale | [ ] | 3 C, M, R, TS | Similar to wall scale, this variable is used for controlling mesh stiffness near boundaries for moving mesh problems.
Burnt Absolute Temperature | burnt Tabs | [K] | 2 A, C, M, R, TS |
Burnt Density | burnt density | [kg m^-3] | 2 A, C, M, R, TS |
Clipped Pressure | pclip | [Pa] | 1 M, R, TS | Negative absolute values clipped for cavitation
Conservative Size Fraction | sfc | [ ] | 2 A, C, M, R, TS |
Courant Number | courant | [ ] | 2 C, M, R, TS |
Cumulative Size Fraction | csf | [ ] | 2 A, C, M, R, TS |
Current Density | jcur |  | 1 C, M, R, TS |
Dynamic Diffusivity | diffdyn |  | 2 C, M, P, R, TS |
Electric Field | elec |  | 1 C, M, R, TS |
Electric Potential | epot |  | 1 C, M, R, TS |
Electrical Conductivity | conelec |  | 3 C, M, R, TS |
Electrical Permittivity | permelec |  | 3 C, M, R, TS |
Electromagnetic Force Density | bfemag |  | 3 R |
Equivalence Ratio | equivratio | [ ] | 2 A, C, M, R, TS |
External Magnetic Induction | bmagext | [ ] | 1 M, R, TS | External magnetic induction field specified by the user.
First Blending Function for BSL and SST model | sstbf1 | [ ] | 3 C, M, R, TS |
Second Blending Function for SST model | sstbf2 | [ ] | 3 C, M, R, TS |
Flame Surface Density | fsd | [m^-1] | 1 A, C, M, R, TS | Combustion with flame surface density models.
Specific Flame Surface Density | spfsd |  | 2 A, C, M, R, TS | Combustion with flame surface density models.
Frequency | freq |  | 3 C |
Fuel Tracer | trfuel | [ ] | 1 A, C, M, R, TS | Residual material model or exhaust gas recirculation (EGR)
Granular Temperature | grantemp | [m^2 s^-2] | 1 A, C, M, R, TS |
Group I Index | groupi | [ ] | 2 C |
Group J Index | groupj | [ ] | 2 C |
Group I Diameter | diami |  | 2 C |
Group J Diameter | diamj |  | 2 C |
Group I Mass | massi |  | 2 C |
Group J Mass | massj |  | 2 C |
Group I Lower Mass | massi lower |  | 2 C |
Group J Lower Mass | massj lower |  | 2 C |
Group I Upper Mass | massi upper |  | 2 C |
Group J Upper Mass | massj upper |  | 2 C |
Ignition Delay Elapsed Fraction | ignfrc | [ ] | 2 A, C, M, R, TS |
Ignition Delay Time | tigndelay | [s] | 2 A, C, M, R, TS |
Particle Integration Timestep | particle integration timestep | [s] | 3 P |
Isentropic Compressibility | compisoS | [m s^2 kg^-1] | 2 C, M, R |
Isentropic Compression Efficiency | icompeff | [ ] | 2 C, M, R, TS |
Isentropic Expansion Efficiency | iexpeff | [ ] | 2 C, M, R, TS |
Isentropic Total Enthalpy | htotisen |  | 2 C, M, R, TS |
Isentropic Static Enthalpy | enthisen |  | 2 C, M, R, TS |
Isobaric Compressibility | compisoP | [K^-1] | 2 C, M, R |
Isothermal Compressibility | compisoT | [m s^2 kg^-1] | 2 C, M, R |
LES Dynamic Model Coefficient | dynmc | [ ] | 1 A, C, M, P, R, TS |
Laminar Burning Velocity | velburnlam | [m s^-1] | 2 A, C, R, TS |
Lighthill Stress | lighthill stress tensor |  | 2 A, C, M, R, TS |
Magnetic Induction | bmag |  | 1 C, M, R, TS |
Magnetic Field | hmag |  | 2 C, M, R, TS |
Magnetic Vector Potential | bpot |  | 1 C, M, R, TS |
Magnetic Permeability | permmag |  | 3 C, M, R, TS |
External Magnetic Induction | bmagext |  | 1 C, M, R, TS |
Mass Flux | mfflux |  | 2 R |
Mesh Diffusivity | diffmesh | [m^2 s^-1] | 2 C, M, R, TS |
Normal Area | normarea | [ ] | 2 C | Normal area vectors.
Total Force Density | forcetden |  | 3 DT |
Total Pressure in Rel Frame | ptotrel |  | 2 A, C, M, P, R, TS | Based on relative frame total enthalpy.
Turbulent Burning Velocity | velburnturb | [m s^-1] | 2 A, C, R, TS |
Mesh Velocity | meshvel |  | 1 C, M, R, TS |
Mixture Fraction Scalar Dissipation Rate | mixsclds | [s^-1] | 3 A, C, M, R, TS |
Molar Reaction Rate | reacrate |  | 2 C, R, TS |
Nonclipped Absolute Pressure | pabsnc |  | 3 A, C, M, R, TS | Nonclipped absolute pressure for cavitation source. This is written to the .res file for all cases that have cavitation.
Nonclipped Density | densitync | [kg m^-3] | 2 C | Nonclipped density for cavitation source
Normal Vector | normal | [ ] | 2 C |
Orthogonality Factor Minimum | orthfactmin | [ ] | 2 C, M, R, TS |
Orthogonality Factor | orthfact | [ ] | 2 C, M, R, TS |
Orthogonality Angle Minimum | orthanglemin |  | 2 C, M, R, TS |
Orthogonality Angle | orthangle |  | 2 C, M, R, TS |
Particle Laplace Number | ptla | [ ] | 2 P |
Particle Turbulent Stokes Number | ptstt | [ ] | 2 P |
Polytropic Compression Efficiency | pcompeff | [ ] | 2 C, M, R, TS |
Polytropic Expansion Efficiency | pexpeff | [ ] | 2 C, M, R, TS |
Polytropic Total Enthalpy | htotpoly |  | 2 C, M, R, TS |
Polytropic Static Enthalpy | enthpoly |  | 2 C, M, R, TS |
Reaction Progress | reacprog | [ ] | 1 A, C, M, R, TS | For premixed or partially premixed combustion.
Weighted Reaction Progress | wreacprog | [ ] | 2 A, C, M, R, TS | For premixed or partially premixed combustion.
Weighted Reaction Progress Source | wreacprogsrc |  | 3 A, C, R, TS | For premixed or partially premixed combustion.
Residual Products Mass Fraction | mfresid | [ ] | 1 A, C, M, R, TS | Residual material model or exhaust gas recirculation (EGR)
Residual Products Molar Fraction | molfresid | [ ] | 2 A, C, M, R, TS | Residual material model or exhaust gas recirculation (EGR)
Restitution Coefficient | restitution coefficient | [ ] | 3 C, M, R, TS |
Rotation Velocity | rotvel |  | 2 C, R, TS |
Rotational Energy | rotenergy |  | 2 C, R, TS |
Shear Velocity | ustar |  | 2 C |
Size Fraction | sf | [ ] | 1 A, C, M, R, TS |
Solid Bulk Viscosity | solid bulk viscosity | [kg m^-1 s^-1] | 3 C, M, R, TS |
Solid Pressure | solid pressure | [Pa] | 3 A, C, M, R, TS |
Solid Pressure Gradient | solid pressure gradient | [ ] | 3 C, M, R, TS |
Solid Shear Viscosity | solid shear viscosity | [kg m^-1 s^-1] | 3 C, M, R, TS |
Spinodal Pressure | pspin | [Pa] | RG | Metastable condition boundary
Spinodal Temperature | tspin | [K] | RG | Metastable condition boundary
Static Entropy | entropy |  | 3 A, C, M, P, R, TS |
Temperature Variance | Tvar |  | 1 A, C, M, R, TS |
Time This Run | trun |  | 2 C |
Total Boundary Displacement | bnddisptot |  | 1 C, DT, M, R, TS |
Total Density | dentot | [kg m^-3] | 2 A, C, M, R | Total Density is the density evaluated at the Total Temperature and Total Pressure.
Total Density in Stn Frame | dentotstn | [kg m^-3] | 2 A, C, M, R |
Total Density in Rel Frame | dentotrel | [kg m^-3] | 2 A, C, M, R |
Total Force | forcet |  | 3 DT |
Unburnt Absolute Temperature | unburnt Tabs | [K] | 2 A, C, M, R, TS |
Unburnt Density | unburnt density | [kg m^-3] | 2 A, C, M, R, TS |
Unburnt Thermal Conductivity | unburnt cond | [W m^-1 K^-1] | 2 A, C, M, R, TS |
Unburnt Specific Heat Capacity at Constant Pressure | unburnt Cp | [J kg^-1 K^-1] | 2 A, C, M, R, TS |
Volume Porosity | volpor | [ ] | 2 C, M, R, TS |
Volume of Finite Volumes | volcvol |  | 3 C, R, TS |
Vorticity | vorticity |  | 2 A, C, M, R, TS | Note that Vorticity is the same as Velocity.Curl.
Vorticity in Stn Frame | vortstn |  | 2 A, C, M, R, TS |
Wall External Heat Transfer Coefficient | htco |  | 2 R, TS |
Wall Adjacent Temperature | tnw | [K] | 2 C, DT, R, TS |
Wall Distance | wall distance | [m] | 2 A, C, M, P, R, TS |
Wall External Temperature | tnwo | [K] | 2 DT, R, TS | User-specified external wall temperature for heat transfer coefficient boundary conditions.
Wall Film Thickness | film thickness | [m] | 2 C, R |
Wall Heat Transfer Coefficient | htc |  | 2 C, R, TS |
Wall Heat Flow | QwallFlow |  | 3 C, DT, R, TS |
Wall Normal Velocity | nwallvel |  | 2 C, R, TS |
Wall Scale | wall scale |  | 3 R, M, TS |
Wavelength in Vacuum | wavelo |  | 3 C |
Wavenumber in Vacuum | waveno |  | 3 C |
Normalized Droplet Number | spdropn | [m^-3] | 2 C, M, R, TS |
Droplet Number | spdrop |  | 1 C, M, R, TS |
Dynamic Bulk Viscosity | dynamic bulk viscosity |  | 1 A, C, M, R, TS |
Total MUSIG Volume Fraction | vft | [ ] | 2 A, C, M, R, TS |
Smoothed Volume Fraction | vfs | [ ] | 2 A, C, M, R, TS |
Temperature Superheating | Tsuperheat |  | 3 C | Temperature above saturation
Temperature Subcooling | Tsubcool |  | 3 C | Temperature below saturation

Release 18.2 - © ANSYS, Inc. All rights reserved.