RhinoCFD + FLAIR Cham

• Serial and parallel processing
• PARSOL cut-cell geometry detection simplifying the mesh generation process
• Numerous turbulence model options including RANS and LES
• Post-processing inbuilt in Rhino including isosurfaces, surface contours, vectors and streamlines
• Cartesian and Cylindrical Polar coordinate meshes
• In-program and online help
• Relational Data input without re-compiling
• Automatic convergence control
• Heat transfer between solids and fluids
• Radiation modelling

• Air flow patterns
• Temperature distribution/stratification
• Radiation
• Humidity
• Comfort Indices
• Age of air / residence time
• Air change effectiveness
• Smoke layering and concentration
• Visibility / line of sight
• Pollutant spread and concentration
• Effect of sprinkler and jet-fan fire-control methods
• Solar Radiation and Wind Model
• Vegetation model
• HVAC
• Thermal comfort
• Fire and smoke hazards
• Chemical release and dispersion of pollutants
• Natural ventilation within buildings and wind flow around buildings.
• Urban heat island
• Pedestrian wind comfort analysis

What’s New

• New Post-Processing Panel –  Expanded capabilities for post-processing results of a simulation:
• Redesign of the post-processing Viewer menu window – with new features and better organization.
• Variables (temperature, velocity, cell material, etc.) are displayed with full names in post-processing,
• Mathematical operations in post-processing can be performed on the data – e.g.: typing 0.5*Density*Velocity*Velocity” in the Scalar input box will calculate dynamic pressure in the flow.
• Standard notation added to scale; added feature to invert colours in post-processing; a grey-scale and
  other colour map options.
• Improved performance of cutplane manipulation, including new faster vector drawing and improved shaders for colouring results.
• Added feature specular reflection to results objects (cutplanes, iso-surfaces, streamlines, etc.)
• Improved foliage model, evaporation & mass transfer – The foliage object represents a group of trees or other vegetation. As trees and plants absorb heat and release water vapor, a pair of input boxes has been added to the Foliage object to allow entering the cooling rate in W/m3 and water-vapor release rate in kg/m3/s.
  The ‘Heat source’ box should be set to the cooling power of the foliage (typically 250 W/m2) multiplied by the Leaf Area Density. The ‘Humidity source’ box (only available in Flair) should be set to the moisture source in kg/m2/s (of the order 810 g/m2/d), also multiplied by the Leaf Area Density.
• Automatic Time Step Calculation – An option in the ‘Time step settings’ dialog allows Earth to calculate the size of the time steps.
  Dialog sets the size of time step 1. At the end of each time step the flow field is scanned for the largest Courant Number. The step size for the next step is adjusted to maintain ‘Target Courant Number’ within user-set limits. The run will stop when ‘Last step number’ steps have been performed, or time exceeds ‘Maximum total time’.
  Current sweep number, time step number and time are written to any dumped solution files which enables restart runs to continue smoothly. This will benefit many transient cases where the timescale of the process changes during the calculation. This includes many VOF cases.
• Option for outputting forces & moments per object as well as total – In addition to the pre-existing file containing the evolution of total force on all objects with time (or sweep), an additional file is output for each object participating in the force summation.
• New Thermal Boundary Condition on objects – Dialogs for setting boundary conditions on non-participating blockages (material 198) allow the setting of thermal and scalar sources on the outer surfaces of such objects.
• Extensions to the Volume-Of-Fluid (VOF) method – VOF dialogues enable use of THINC, and setting of parameters required for temperature-dependent surface tension. All VOF methods can solve temperature-dependent cases, with proper treatment of the temperature in each phase and in any immersed solids. 
  Surface tension can be a linear function of temperature; the Langmuir equation of state can be used which includes a scalar as well as temperature. A constant static contact angle can be specified to model wall adhesion effects.
• Activation of Q-Criterion and Vorticity – The Main Menu – Output – Derived Variables panel allows activation of calculation and storage of the Q-criterion
  and Vorticity.
• Use of Weibull wind coefficients for averaged wind field (FLAIR) – FLAIR can calculate wind field and comfort index for a range of wind directions, and produce an averaged result.
  Both WAsP tab format and Weibull coefficients can be used and can be read from a Generalised Wind Climate file.
  A link to the Global Wind Atlas website allows wind data for large parts of the world to be downloaded quickly in the form of a Generalised Wind Climate (GWC) file.
• Dutch and Belgian Fire Standards (FLAIR) – FLAIR FIRE object and Smoke solution panels include Dutch NEN 6098 and Belgian NBN S 21-208-2/A1 Fire
  Standards. The ’International’ fire and smoke model, used in FLAIR for many years, is relevant for most cases where production rates of heat and mass can be prescribed. The Dutch and Belgian models are designed to simulate car fires in parking garages and thus are more prescriptive in values used for heat of combustion and heat release rate.
  Selecting the Dutch or Belgian model automatically sets all parameters according to the chosen standard, and displays them in the form used. 
• Universal Thermal Climate Index (FLAIR) – The Universal Thermal Climate Index UTCI provides an assessment of the outdoor thermal environment in biometeorological applications based on the equivalence of the dynamic physiological response predicted by a model of human thermoregulation, coupled with a state-of-the-art clothing model. The operational procedure, available as software from the UTCI website (/s/files/1/0246/0798/1613/files/h2572_1.jpg?v=1578531681″>

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