Altair Flow Simulator 2022.0.0

Plot Model Inputs Using Color Contours
Use the color contour plots to visualize common model inputs such as restriction diameter or length. Use this feature to quickly check model inputs.


Center Element Symbol
The flow element symbol can now be automatically centered between its chambers. This can be used during element creation or can be used on existing elements. Also works for thermal resistors.


Energy Equations with Enthalpy (BETA Release)
A new option has been added to use enthalpy instead of temperature for energy conservation calculations. This is only valid when Coolprop is used for fluid properties. This option also will include the Joule-Thomson effect on temperature. Phase change is not yet included in FS.


Cv Flow Coefficient Element
The flow coefficient typically called Cv (or Kv) can now be used on a generic element. Cv has the units of GPM/sqrt(psi) ( or m^3/hour/sqrt(bar) ) and is typically used to characterize the flowrate in a valve. The simple Cv element can be used instead of a valve when the flow restriction flowrate has a constant Cv. The Cv element can be used with compressible gas or incompressible liquids. The equations used in this element come from ISA-75.01.01-2007

Compressibility factor used for Coolprop fluids
The gas density calculations in FS now include the compressibility factor (z) for increased accuracy. Any equation that used the ideal gas equation now includes z. This only works when Coolprop is used for fluid properties. z=1 for all other fluid property sources.


Add New Fluid Property Options
Add the “incompressible” liquids from Coolprop. This includes typical automotive coolants.
CdComp Reverse Flow Options
Option added to calculate the Cd differently if flow reverses through the element. Options include using different corner treatment or specifying a Cd for reversed flow.
CdComp Incidence Angle Effect
Modified Cdcomp discharge coefficient (Cd) for high incidence angle and hole that is at an angle to the part surface. High negative incidence angle (angle < -15o) and positive incidence angle (30o) will be affected. Most difference occurs if hole is angled > 30o to the part surface. Change produces smoother results for wider range of incidence angles. Did not change Cd for holes that are perpendicular to the part surface.
Thermal Node Includes Rotation
The thermal node now includes a surface rotation input. This is useful for convectors attached to inertial or vortex chambers that are being used for cavities in turbomachinery applications. FS will now calculate a relative total temperature to use for the convection heat transfer to a rotating surface.


Improved Fluid Element Creation from CAD
The “Geometry” dropdown now has all GUI functions to enable flow element creation from CAD geometry. This is useful when a CAD model of a piping system is available. Chambers and elements can be created using the CAD


Vertices can be created on geometry. A chamber can be created at the same time as the vertex or chambers can later be placed on a vertex. Chambers can also be created using a


Custom Correlation Option for Heat Addition
Users can use the custom heat addition for orifice element, tube elements and the heat flow resistor in thermal networks.
Custom Correlation Option for Cavity HTC
Users can use the custom cavity Heat Transfer Coefficient (HTC) on convectors when a fluid chamber is convecting to a rotating or stationary surface.
Custom Correlation Output
Information about custom correlations is now written to the *.res file. Users can also fill text variables to write to the .res file. There is a new subroutine argument that must be added to all custom correlation FORTRAN. The new argument is the subroutine name:
CUST_FILL_OUTPUT_STRING.
See the examples in
<FlowSimulator_install_folder>\Resources\Customize\fs_custom_lib.f
Flow vs. Delta P vs. Delta T added to Heat Exchanger
Added another pressure loss option to the generic heat exchanger.
Jacketed Pipe Improvements
The thermal nodes created by the jacketed pipe now have a volume input. The jacketed pipe can include another element to model heat exchange between 2 elements. An existing jacketed pipe can be edited by selecting it from the “Domain Browser”


Added Gauge and Manipulate Variables in Controllers
Some of the new variables now available for controllers include:
- Chamber radius, static temperature, absolute and relative total temperature
- Tube overall Cd, duct shape, aspect ratio
- Cavity surface friction, windage
See
<installation_directory>\Resources\misc_solver_files\controller_working_get_set.dat for a full list.
Reverse Element Direction
Double click with the left mouse button to quickly reverse the direction of an element. The double click should be done on the element symbol.
Geometry Edge Radius and Length
A geometry edge can be selected to display radius, diameter, edge length and area for a circle. Click the icon to enter edge selection mode. Select edges to examine. Click icon again to exit edge selection mode.

Minimum requirements:
- Two Processor Cores, 2 GHz
- 4 GB RAM (8 GB RAM recommended)
- 8 GB of available hard drive space
- 1024 X 768 screen resolution