64-bit technology W=Thermohaline flow YFeatures available at all levels are indicated by the symbol W.

N _~FEFLOW

Integrated pre- and postprocessing WInteractive graphics WData interfacing to GIS WData interfacing to CAD WProgramming interface (C, C++) WNo internal software limits WMicrosoft windows platforms WLINUX/UNIX platforms W

O mFEFLOW

Darcy fluid flow in porous media WVariably saturated porous media WFree surface (phreatic) flow WSingle-species mass transport XMulti-species reactive mass transport XMulti-phase flow and transport

Heat (nonisothermal) transport YVariable-density transport Xh=c~==d

FEFLOW is offered in six feature levels:

Any level includes all the features of all lower levels. Accordingly, licenlevel at which the respective feature is available. For example, the sym

Symbol Hierarchical level of featu

W Flow 2DX W + Mass 2DY X + Heat 2D + Flow 3DZ Y + Mass 3D[ Y + Heat 3D\ Z + Heat 3D~=p~=`

se pricing increases with feature level. Symbols indicate the lowestbol Y denotes features that are available at levels Y, Z, [ and \.

re extent FEFLOW license ident

F2

FM2

F3

FM3

FH3

FMH3N=

Multi-diffusive convection X

h=c~==d

Fracture flow WFracture mass transport XFracture heat transport YTransient problems WSteady problems W

P j~~FEFLOW

Finite element method (FEM) WFinite difference method (FDM)

Finite volume method (FVM)

Discrete feature elements (fracs) WAdaptive time stepping (ATS) WAdaptive mesh refinement (AMR) W

Q aFEFLOW

Three dimensions (3D) YQuasi three dimensions (Q3)

Two-dimensional vertical plane (2V) W

O =`==mFEFLOWTwo-dimensional horizontal plane (2H) W~=p~=`

Axisymmetric (meridional) plane (2X) WOne dimension (1D)

R jFEFLOW

Prismatic elements in 3D YTetrahedral elements in 3D

Unstructured triangular meshes WStructured quadrilateral meshes WDelaunay meshes WUsing add-ins in mesh generation WRefinement techniques WDerefinement (encoarsening) techniques WNode movement WElement edge flipping WElement deletion WMesh reflection WMesh coordinates transformation WMoving mesh for 3D free-surface problems Y

Q =`==aFEFLOWO

h=c~==d

S j~FEFLOW

Loading background maps WUse maps for mesh design WJoining maps for direct data assignment WUse maps in 3D drawings W

T a~~=pFEFLOW

Direct Read of Vector Data

ESRI Shapefiles WESRI coverages WASCII WInternal binary interchange format (PLX) W

Direct Read of CAD Data

AutoCAD DXF WDirect Read of Raster Data

Tagged image file format (TIFF) WJPEG file interchange format (JFIF)

Exporting Vector Data

ESRI Shapefiles WASCII W=~=p~=`

Internal binary interchange format (PLX) WExporting CAD Data

AutoCAD DXF WExporting Raster Data

ESRI ASCII grids WSurfer grids W

U a~~=j~~FEFLOW

Direct linkage to dBase IV tables WDirect linkage to ASCII tables WDirect linkage to ESRI INFO databases W

V a~~=o~~FEFLOW

Akima interpolation WInverse distance weighting (IDW) WKriging WCustomized data mapping techniques WPolygon-related regionalization (joining) W

T =`==a~~=pFEFLOWP=

h=c~==d

Interpolation of time-varying 1D functions WInterpolation of time-varying 2D functions W

NM bFEFLOW

Geometry Construction Tools Including

Point-and-click location with mouse WX, Y coordinate input with mouse WSnap to vertex, endpoint, or along the edge WUndo/redo operations WAssign edges as parabolic segments WAssign edges as circular segments WMove, rotate, split, delete, copy, and paste operations

W

Intersection of two segments WAuto-close for polygons W

Attribute Data Assigning Tools for Initial, Boundary and Material Conditions Including

Mouse selection WData mapping (regionalization) WTools for data exploring and retrieval W

V =`==a~~=FEFLOW~=p~=`

Time-varying databases for 1D curves and 2D distributions

W

Copy, joining and debug operations WData inheritance in mesh enrichment and layer (re-)configuration

W

Trimming layer thicknesses and distances W

NN _~=`FEFLOW

Dirichlet-type WNeumann-type WCauchy-type (leakage) WWell-type WAll boundary conditions can be transient WAll boundary conditions can be constrained WSpecific Boundary Conditions

Hydraulic head WPressure WSeepage face WSaltwater head XSaturation W

NM =`==bFEFLOWQ

Moisture content W

h=c~==d

Integral flux YFree drainage WMulti-layer well (well bore condition) YBorehole heat exchanger (BHE) [Total mass flux XTotal heat flux YDispersive mass flux XConductive heat flux Y

NO _~=`~FEFLOW

Neumann constraint for Dirichlet-type WDirichlet constraint for Neumann-type WNeumann constraint for Cauchy-type WDirichlet constraint for Cauchy-type WDirichlet constraint well-type WAll constraints can be transient W

NN =`==_~=FEFLOW=~=p~=`

NP j~~=a~~=Ed~FFEFLOW

Time-constant distributions WTime-variable distributions WUser-defined formula for sink/source relationships WAnisotropy of hydraulic conductivity in 2D WAxis-parallel anisotropy of hydraulic conductivity in 3D

Y

Layer-oriented anisotropy of hydraulic conductivity in 3D

Y

General (full) anisotropy of hydraulic conductivity in 3D

Y

Anisotropy factor of solid heat conductivity in 3D [

NQ r~~=j~~=a~~FEFLOW

Empirical Laws for Capillary Pressure and Relative Conductivity Relations

van Genuchten - Mualem (-n params) Wvan Genuchten - modified (-n-m params)with regularization

W

Splines (cubic; monotonic, non-monotonic) WBrooks - Corey WHaverkamp WR=

Exponential W

h=c~==d

Linear WHysteresis W

NR j=l==s~~=p~~=c=m

FEFLOW

Standard Richards equation WMixed (saturation-pressure) formulation WPrimary variable substitution (switching) WPicard method WNewton method WResidual error control WKirchhoff integral transformation in steady-state WGravity direction setting W

NS c=p~=Em~F=`

FEFLOW

Unconfined aquifers W

NQ =`==r~~=FEFLOWConfined aquifers W~=p~=`

Moving (adaptive) mesh strategy YFixed mesh strategy YMultiple free surfaces (perched water) YControl of partially-saturated cells/elements by a linear relation of the cell filling height

Y

Control of dry cells/elements by a residual pseudo-saturation

Y

Control of dry cells/elements by deletion

NT c~=bFEFLOW

Flow Laws

Darcy WHagen-Poiseuille WManning-Strickler W

Pipes (1D) WFaces (2D) YHorizontally placed WVertically placed YArbitrarily placed in 3D

NS =`==c=p~=Em~F=`

FEFLOWS

Variable-density flow and transport X

h=c~==d

Extended Oberbeck-Boussinesq approximation X

NU `~=o~FEFLOW

Equilibrium reaction (sorption)

Henry XFreundlich XLangmuir X

Nonequilibrium reaction

1st order linear decay XMichaelis-Menten XDecay chains X

Multi-species reaction kinetics

Degradation XArrhenius XMonod XUser-specified type with an interactive reac-tion kinetics editor FEMATHED: Freely edit-able reactions using a fast formula interpreter, including conditional expressions

X

NT =`==c~=bFEFLOW=~=p~=`

NV s~~=c=aFEFLOW

Default Oberbeck-Boussinesq approximation XExtended Oberbeck-Boussinesq approximation XConstant expansion XVariable (higher-order) expansion YGravity direction setting XViscosity dependency XUser-defined formula for viscosity relationships XNon-Fickian (high-concentration) mass flux XConsistent velocity approximation XVariable fluid density in fractures X

OM q=p=jFEFLOW

Constant time steps (user-predefined) WVariable time steps (user-predefined) WAdaptive error-controlled time steps WImplicit in time WExplicit in time

Mixed, 2nd-order scheme (Crank-Nicolson) WTime step modifiers (maximum, increase limits) WT=

h=c~==d

ON k~=p~~FEFLOW

Upstream weighting (unsaturated problems) WStreamline upwinding (SU) XFull upwinding (FU) XShock capturing (SC) XPetrov-Galerkin least-square upwinding (PGLS) X

OO p~=j~=b~=p

FEFLOW

Preconditioned conjugate gradient method (PCG) WAlgebraic multigrid (AMG) with OMP extension WRestarted orthogonalization-minimization method (ORTHOMIN)

W

Restarted generalized minimal residual method (GMRES)

W

Conjugate gradient square method (CGS) WBi-conjugate gradient stable method (BiCGSTAB) WPostconditioned bi-conjugate gradient stable method (BiCGSTABP)

W

Direct Gaussian equation solvers W~=p~=`

Solver parameter settings (stop criteria, maximum iteration numbers, etc.)

W

OP m~~=`FEFLOW

Supports hyper-threading in processor units WSupports multiprocessor multicore hardware sys-tems

W

OQ m~=q~FEFLOW

Stationary WTransient WIsochrones W2D W3D YForward WBackward WMethods

OO =`==p~=j~=b~=p

FEFLOWU

h=c~==d

Pollock W4th-order Runge-Kutta W

Relevant area of influence (RAI) Y

OR o=a~~=b~~=q

FEFLOW

Diagrams for observation points and wells WDiagrams for balanced flux quantities W2D graphics W3D graphics YBudget analysis WFluid flux analysis WContent analysis (volume, mass, energy) WSpatial operations (differences) WTemporal operations (difference, deviation, cumu-lative changes)

W

Creating 2D cross-sectional models from 3D YReverse flow field analysis WLegend editing WDiagram editing W

OQ =`==m~=q~FEFLOW=~=p~=`

Scatter plots for spatial and temporal data W

OS o=a~~=d~FEFLOW

Isoline contouring (2D) WIsoline contouring (3D) YFringes (2D) WFringes (3D) YVector plotting (2D) WVector plotting (3D) YVisualization of vector fields by texture transport (2D)

Visualization of vector fields by texture transport (3D)

Pathlines (2D) WPathlines (3D) YIsochrones (2D) WIsochrones (3D) YStreamlines (2D) WIsosurfaces (3D) Y

OR =`==o=a~~=b~~=q

FEFLOWV=

Cutting (3D) Y

h=c~==d

Map overlay (3D) YFences and cross-sections (3D) YAnimation, video creation (2D) WAnimation, video creation (3D) Y

OT f~=jFEFLOW

Parameter estimator (PEST), steady and unsteady WCoupling with the surface water model MIKE11) (unsteady groundwater - river network simulation)

) requires extra license

W

OS =`==o=a~~=FEFLOWN~=p~=`M