Altair Flow Simulator 2022.0.0

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Altair Flow Simulator 2022.0.0 | 597.9 mb
The software developer Altair is pleased to announce the availability of Flow Simulator 2022.0.0 is the single, unified fluid system design tool/platform for GE Aviation's Thermal System design, Combustion, Lube/fuel systems, and externals teams. It is rooted in decades of practical usage and experience, with aerospace-quality level validation and verification.
Altair Flow Simulator 2022 Release Notes
Highlights
- GUI can plot model inputs using color contours
- Center element symbol
- Improved creation of flow elements using CAD geometry
New Features 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.
Altair Flow Simulator 2022.0.0

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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.
Altair Flow Simulator 2022.0.0

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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.
Altair Flow Simulator 2022.0.0

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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
Altair Flow Simulator 2022.0.0

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Enhancements 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.
Altair Flow Simulator 2022.0.0

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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.
Altair Flow Simulator 2022.0.0

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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
Altair Flow Simulator 2022.0.0

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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
Altair Flow Simulator 2022.0.0

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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
\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"
Altair Flow Simulator 2022.0.0

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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
\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.
Altair Flow Simulator 2022.0.0

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Resolved Issues
- Fix units conversion (SI to English) for flow derivatives (dw/dP) returned from UDE code.
- Add precision to units' conversion to minimize unexpected small differences in model inputs displayed in the GUI.
- Writing a Reynolds Number that uses the effective hydraulic diameter for tubes and the advanced orifice. The effective hydraulic diameter is different than (4 x area)/perimeter for noncircular shapes. The effective hydraulic diameter is used to calculate a more accurate friction factor and HTC for noncircular shapes.
- The Brush Seal element had a nonphysical change in calculated flowrate when the Reynolds number changed form laminar to turbulent. This has been fixed
Altair Flow Simulator 2022.0.0

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Altair Flow Simulator 2022.0.0

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Altair Flow Simulator 2022.0.0

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Flow Simulator is a 3D design tool that provides interdisciplinary modeling and optimization for fluid and thermal systems within a CAD-integrated environment.
System-level design has become increasingly critical as organizations are tasked with simulating complex duty cycles. Fast software solutions like Flow Simulator are needed to model an entire system, including rapid iteration concept modeling and understanding of system simulation and system behavior in applications such as rotating machinery design, electromobility, wind turbines, heat exchangers, and virtually anything that encompasses thermal management.
Flow Simulator was originally developed by GE Aviation to serve as a fast flow network simulator for aircraft engines – simulating how an entire flight cycle would behave in the real world, from runway and take off to flight and landing. Since its inception, it has been used to simplify modeling for a variety of complex thermal systems applications, including healthcare, locomotives, and renewable energy.
Altair Flow Simulator - Integrated Thermo-fluid System Design

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Altair is a global technology company that provides software and cloud solutions in the areas of simulation, high-performance computing (HPC), and artificial intelligence (AI). Altair enables organizations across broad industry segments to compete more effectively in a connected world while creating a more sustainable future.
TROY, Mich., Feb. 24, 2021 /PRNewswire/ –- Altair announced that it has acquired Flow Simulator from GE Aviation. Flow Simulator is an integrated flow, heat transfer, and combustion design software, which enables mixed fidelity simulations to optimize machine and systems design.


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