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  • Goma User Manual

Site Navigation

  • Goma User Manual

Section Navigation

  • Introduction
  • Background Information
  • Code Structure and I/O
  • Problem Description (Input File)
    • File Specification
      • FEM File
      • Output EXODUS II File
      • Guess File
      • SOLN File
      • Write Intermediate Results
      • Write Initial Solution
      • External Decomposition
      • Decomposition Type
    • General Specifications
      • Output Level
      • Debug
      • Number of Jacobian File Dumps
      • Initial Guess
      • Initialize
      • External Field
      • Export Field
      • External Pixel Field
      • Pressure Datum
      • Anneal Mesh on Output
    • Time Integration Specifications
      • Time Integration
      • delta_t
      • Maximum Number of Time Steps
      • Maximum Time
      • Minimum Time Step
      • Maximum Time Step
      • Minimum Resolved Time Step
      • Courant Number Limit
      • Time Step Parameter
      • Time Step Error
      • Printing Frequency
      • Fix Frequency
      • Second Frequency Time
      • Initial Time
    • Level Set Specifications
      • Fill Subcycle
      • Fill Weight Function
      • Level Set Interface Tracking
      • Level Set Semi_Lagrange
      • Level Set Subgrid Integration Depth
      • Level Set Subelement Integration
      • Level Set Adaptive Integration
      • Level Set Adaptive Order
      • Overlap Quadrature Points
      • Level Set PSPP Filtering
      • Level Set Length Scale
      • Level Set Initialize
      • Level Set Adaptive Mesh
      • Level Set Adapt Width
      • Level Set Adapt Inner Size
      • Level Set Adapt Outer Size
      • Level Set Adapt Frequency
      • Level Set Initialization Method
      • Level Set Periodic Planes
      • Level Set Control Width
      • Level Set Timestep Control
      • Level Set Renormalization Tolerance
      • Level Set Renormalization Method
      • Level Set Renormalization Frequency
      • Restart Time Integration After Renormalization
      • Level Set Reconstruction Method
      • Level Set Contact Extension
      • Level Set Slave Surface
      • Ignore Level Set Dependencies
      • Force Initial Level Set Renormalization
    • Phase Field Specifications
      • Number of Phase Functions
      • Phase Function Slave Surface
      • Phase Function Initialization Method
      • Phase Function Renormalization Tolerance
      • Phase Function Renormalization Method
    • Continuation Specifications
    • Hunting Specifications
    • Augmenting Conditions Specifications
    • Solver Specifications
      • Total Number of Matrices
      • Solution Algorithm
      • Matrix Storage Format
      • Stratimikos File
      • Preconditioner
      • Matrix Subdomain Solver
      • Matrix Scaling
      • Matrix Residual Norm Type
      • Matrix Output Type
      • Matrix Factorization Reuse
      • Matrix Graph Fillin
      • Matrix Factorization Overlap
      • Matrix Overlap Type
      • Matrix Auxiliary Vector
      • Matrix Drop Tolerance
      • Matrix Polynomial Order
      • Matrix Reorder
      • Matrix Factorization Save
      • Matrix ILUT Fill Factor
      • Matrix RILU Relax Factor
      • Matrix BILU Threshold
      • Matrix Relative Threshold
      • Matrix Absolute Threshold
      • Size of Krylov Subspace
      • Orthogonalization
      • Maximum Linear Solve Iterations
      • Number of Newton Iterations
      • Modified Newton Tolerance
      • Jacobian Reform Time Stride
      • Newton Correction Factor
      • Normalized Residual Tolerance
      • Normalized Correction Tolerance
      • Residual Ratio Tolerance
      • Pressure Stabilization
      • Pressure Stabilization Scaling
      • Linear Stability
      • Filter Concentration
      • Disable Viscosity Sensitivities
    • Eigensolver Specifications
    • Electromagnetic Problem Properties
      • EM Frequency
      • EM Free Space Permittivity
      • EM Free Space Permeability
    • Boundary Condition Specifications
      • Number of BC
      • Category 1: Any Equation
      • Category 2: Mesh Equations
      • Category 3: Real Solid Equations
      • Category 4: Fluid Momentum Equations
      • Category 5: Energy Equations
      • Category 6: Mass Equations
      • Category 7: Continuity Equation
      • Category 8: Porous Equations
      • Category 9: Stress Equations
      • Category 10: Gradient Equations
      • Category 11: Shear Rate Equation
      • Category 12: Fill Equation
      • Category 13: Potential Equation
      • Category 14: Fluid-Solid Interaction
      • Category 15: Level Set Interfaces
      • Category 16: Shell Equations
      • Category 17: Acoustic Equations
      • END OF BC
    • Rotation Specifications
      • Rotation Specifications
      • ROT SURFACE
      • ROT EDGE
      • ROT VERTEX
      • END OF ROT
    • Problem Description
      • Number of Materials
      • MAT
      • Coordinate System
      • Element Mapping
      • Mesh Motion
      • Number of Bulk Species
      • Material is Nondilute
      • Number of Bulk Species Equations
      • Default Material Species Type
      • Number of Viscoelastic Modes
      • Number of Matrices
      • MATRIX
      • Disable time step control
      • Normalized Residual Tolerance
      • Number of EQ
      • energy
      • momentum
      • pmomentum
      • stress
      • species_bulk
      • mesh
      • mom_solid
      • continuity
      • fill
      • lagr_mult_1, lagr_mult_2, lagr_mult_3
      • level set
      • voltage
      • efield
      • enorm
      • shear_rate
      • vort_dir
      • vort_lambda
      • porous_sat
      • porous_unsat
      • porous_liq
      • porous_gas
      • porous_deform
      • porous_energy
      • surf_charge
      • shell_tension
      • shell_curvature
      • shell_angle
      • shell_diff_flux
      • shell_diff_curv
      • shell_normal
      • shell_surf_curv
      • shell_surf_div_v
      • grad_v_dot_n1, grad_v_dot_n2, grad_v_dot_n3
      • n_dot_curl_v
      • acous_preal
      • acous_pimag
      • acous_reyn_stress
      • potential1
      • potential2
      • lubp
      • lubp_2
      • shell_energy
      • shell_filmp
      • shell_filmh
      • shell_partc
      • shell_sat_closed
      • shell_sat_gasn
      • shell_sat_open
      • shell_sat_open_2
      • shell_deltah
      • moment
      • END OF EQ
      • END OF MAT
    • Post Processing Specifications
      • Stream Function
      • Streamwise Normal Stress
      • Cross-Stream Shear Rate
      • Mean Shear Rate
      • Pressure Contours
      • Fill Contours
      • Concentration Contours
      • Stress Contours
      • First Invariant of Strain
      • Second Invariant of Strain
      • Third Invariant of Strain
      • Velocity Divergence
      • Particle Velocity Divergence
      • Total Velocity Divergence
      • Electric Field
      • Electric Field Magnitude
      • Enormsq Field
      • Enormsq Field Norm
      • Viscosity
      • Density
      • Lame MU
      • Lame LAMBDA
      • Von Mises Strain
      • Von Mises Stress
      • Navier Stokes Residuals
      • Moving Mesh Residuals
      • Mass Diffusion Vectors
      • Diffusive Mass Flux Vectors
      • Mass Fluxlines
      • Energy Conduction Vectors
      • Energy Fluxlines
      • Time Derivatives
      • Mesh Stress Tensor
      • Real Solid Stress Tensor
      • Mesh Strain Tensor
      • Viscoplastic Def_Grad Tensor
      • Lagrangian Convection
      • Normal and Tangent Vectors
      • Error ZZ Velocity
      • Error ZZ Heat Flux
      • Error ZZ Pressure
      • User-Defined Post Processing
      • Porous Saturation
      • Total Density of Solvents in Porous Media
      • Density of Solvents in Gas Phase in Porous Media
      • Density of Liquid Phase in Porous Media
      • Gas Phase Darcy Velocity in Porous Media
      • Liquid Phase Darcy Velocity in Porous Media
      • Capillary Pressure in Porous Media
      • Grid Peclet Number in Porous Media
      • SUPG Velocity in Porous Media
      • Vorticity Vector
      • Map Conf Stress
    • Post Processing Fluxes and Data
      • Post Processing Fluxes
      • FLUX
      • END OF FLUX
      • Post Processing Data
      • DATA
      • END OF DATA
      • Post Processing Flux Sensitivities
      • FLUX_SENS
      • END OF FLUX_SENS
      • Post Processing Data Sensitivities
      • DATA_SENS
      • END OF DATA_SENS
    • Post Processing Particle Traces
      • Post Processing Particle Traces
      • PARTICLE
      • END OF PARTICLES
    • Volumetric Integration
      • Post Processing Volumetric Integration
      • VOLUME_INT
      • END OF VOLUME_INT
    • Average post processing
      • Post Processing Averages
      • AVERAGE
      • END OF AVERAGES
  • Material Files
    • Physical Properties
      • Default Database
      • Density
    • Mechanical Properties and Constitutive Equations
      • Solid Constitutive Equation
      • Plasticity Equation
      • Convective Lagrangian Velocity
      • Lame MU
      • Lame LAMBDA
      • Stress Free Solvent Vol Frac
      • Solid Thermal Expansion
      • Solid Reference Temperature
      • Plastic Viscosity
      • EVP Yield Stress
      • Polymer Viscosity
      • Pseudo-Solid Lame MU
      • Pseudo-Solid Lame LAMBDA
      • Liquid Constitutive Equation
      • Viscosity
      • Low Rate Viscosity
      • Power Law Exponent
      • High Rate Viscosity
      • Time Constant
      • Aexp
      • Thermal Exponent
      • Thermal WLF Constant2
      • Yield Stress
      • Yield Exponent
      • Suspension Maximum Packing
      • Suspension Species Number
      • Cure Gel Point
      • Cure A Exponent
      • Cure B Exponent
      • Cure Species Number
      • Unreacted Gel Temperature
      • Polymer Constitutive Equation
      • PTT Form
      • Polymer Stress Formulation
      • Polymer Weight Function
      • Polymer Shift Function
      • Polymer Weighting
      • Polymer Shock Capturing
      • Discontinuous Jacobian Formulation
      • Adaptive Viscosity Scaling
      • Polymer Viscosity
      • Polymer Time Constant
      • Polymer Yield Stress
      • Mobility Parameter
      • PTT Xi parameter
      • PTT Epsilon parameter
      • Surface Tension
      • Second Level Set Conductivity
      • Second Level Set Density
      • Second Level Set Heat Capacity
      • Second Level Set Momentum Source
      • Second Level Set Viscosity
      • Shell Bending Stiffness
    • Thermal Properties
      • Heat Flux Model
      • Conductivity
      • Heat Capacity
      • Volume Expansion
      • Reference Temperature
      • Liquidus Temperature
      • Solidus Temperature
      • Energy Weight Function
    • Electrical Properties
      • Electrical Conductivity
      • Electrical Permittivity
      • Magnetic Permeability
      • Electromagnetic Incident Wave
      • Extinction Index
      • Refractive Index
    • Microstructure Properties
      • Media Type
      • Porosity
      • Permeability
      • Liquid phase compressibility
      • Liquid phase reference pressure
      • Flowing Liquid Viscosity
      • Inertia Coefficient
      • Capillary Network Stress
      • Rel Gas Permeability
      • Rel Liq Permeability
      • Saturation
      • Porous Weight Function
      • Porous Mass Lumping
      • Porous Diffusion Constitutive Equation
      • Porous Gas Diffusivity
      • Porous Latent Heat Vaporization
      • Porous Latent Heat Fusion
      • Porous Vapor Pressure
      • Porous Liquid Volume Expansion
      • Porous Gas Constants
    • Species Properties
      • Number of Species
      • Diffusion Constitutive Equation
      • Species Weight Function
      • Number of Chemical Reactions
      • Reaction Rate
      • Thermodynamic Potential
      • Interfacial Area
      • Butler_Volmer_j
      • Butler_Volmer_ij
      • Solution Temperature
      • Porosity
      • Diffusivity
      • Shear Rate Diffusivity
      • Viscosity Diffusivity
      • Curvature Diffusivity
      • Fickian Diffusivity
      • Gravity-based Diffusivity
      • Q Tensor Diffusivity
      • Species Time Integration
      • Advective Scaling
      • Latent Heat Vaporization
      • Latent Heat Fusion
      • Vapor Pressure
      • Species Volume Expansion
      • Standard State Chemical Potential
      • Pure Species Chemical Potential
      • Chemical Potential
      • Reference Concentration
      • Molecular Weight
      • Specific Volume
      • Molar Volume
      • Charge Number
      • Non-condensable Molecular Weight
      • Non-volatile Molar Volume
      • Non-volatile Specific Volume
      • Flory-Huggins parameters
    • Source Terms
      • Navier-Stokes Source
      • Solid Body Source
      • Mass Source
      • Heat Source
      • Species Source
      • Current Source
      • Moment Source
      • Initialize
    • Shell Equation Properties and Models
      • Upper Height Function Constants
      • Lower Height Function Constants
      • Upper Velocity Function Constants
      • Lower Velocity Function Constants
      • Upper Contact Angle
      • Lower Contact Angle
      • Lubrication Fluid Source
      • Lubrication Momentum Source
      • Turbulent Lubrication Mode
      • Shell Energy Source QCONV
      • Shell Energy Source Sliding Contact
      • Shell Energy Source Viscous Dissipation
      • Shell Energy Source External
      • FSI Deformation Model
      • Film Evaporation Model
      • Disjoining Pressure Model
      • Diffusion Coefficient Model
      • Porous Shell Radius
      • Porous Shell Height
      • Porous Shell Closed Porosity
      • Porous Shell Closed Gas Pressure
      • Porous Shell Atmospheric Pressure
      • Porous Shell Reference Pressure
      • Porous Shell Cross Permeability
      • Porous Shell Gas Diffusivity
      • Porous Shell Gas Temperature Constant
      • Porous Shell Henrys Law Constant
    • Moment Properties
  • References
  • Appendix 1: Goma Documentation Lists

Navier Stokes Residuals#

Navier Stokes Residuals = {yes | no}

Description / Usage#

These post-processing nodal variables are constructed from the corresponding weighted residual function of the fluid (e.g. Navier-Stokes) momentum equations, using a Galerkin finite-element formulation. When activated with this card, variables named RMX, RMY, and RMZ appear in the output EXODUS II file, corresponding to each of the independent components of the fluid momentum balance.

The permissible values for this postprocessing option are:

yes

Calculate the Navier-Stokes residuals and store as nodal variables in the output EXODUS II file.

no

Do not calculate Navier-Stokes residuals.

Examples#

Following is a sample input card:

Navier Stokes Residuals = no

Technical Discussion#

This option can be used to help understand convergence behavior of a particular problem, as it allows the user to visualize the pattern of residuals over the computational domain during a Newton iteration process. The intermediate solutions of a Newton iteration process can be activated with the Write Intermediate Results card.

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Von Mises Stress

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Moving Mesh Residuals

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  • Examples
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