GT-SUITE Productivity Tools

GT-ISE (Integrated Simulation Environment)

GT-ISE is the interface where models are built, simulation settings are declared, and simulations
(both single and batch) are launched.  It is a 2-D environment where various objects are brought into a
project map and connected together linking the entire model as a whole.  

Some additional features are mentioned below:
      •    Subassembly and encryption feature for data management and OEM/supplier model sharing
      •    Object library for storing commonly used data sets
              (such as turbocharger and pump maps, heat exchanger maps, pipes, etc.)
      •    Compound templates for users to make their own templates, with their own help files, plots,
               RLTs, and control signals.
      •    2-D scale viewer shows scale view on input geometry and 3-D viewer of flowsplit geometry
      •    Run-time monitors display results during the simulation, and "ActiveDial" allows inputs to be varied
               dynamically simulation.
      •    Data file (*.gtm), written in XML format, can be used as a database for storing models and
               sub-models for future reuse
      •    CaseSetup and DOESetup for parameter definition, including formulas and functions.
      •    Models can be annotated with text and figures. 

DOE Design Tool, DOE-POST (Design of Experiments), and Distributed Computing
With the Design of Experiments feature, many test cases may be run simultaneously(via built-in
Distributed Computing feature) and the user can define certain factors they wish to optimize, based on
a set of independent parameters.  Several different DOE methods are available, including full-factorial
and Latin-Hypercube.

When the simulations are complete, DOE-POST can be used to find input values (independent variables)
that target or optimize one or more result variables. Independent variables maybe be "case independent"
(i.e. cam timing for a variable-valve-timing (VVT) engine) or fixed-sweep for all operating conditions
(i.e. cam-timing for a fixed-timing engine).  User-defined weighting functions are available both for the
balance of result variables (when optimizing two or more values simultaneously) as well as for weighting
different operating conditions (e.g. more weight maybe be given to rated load operating point than to say
idle).

COOL3D Underhood Modeling Preprocessor
COOL3D is a 3D preprocessor application tool used to build up complex underhood models for thermal
modeling applications.  It includes provisions for detailed modeling of heat exchangers, fans, shrouds,
various positions of inlet and outlet flow, and blockages from structural elements.  It then outputs a
discretized model of the cooling space that can then be opened in GT-ISE and readily connected to other
systems, such as the liquid coolant flowing in the internal passages of a radiator or the hot air flowing in
the internal passages of a charge air intercooler.

GT-SUITE's COOL3D preprocessor 3D flow-space solver differs from traditional full 3D CFD
approaches in two significant ways:
     •    GT-SUITE typically runs much faster than a full 3D CFD solution because it is usinga 1D
          solution on the boundaries between subvolumes, while utilizing quasi-3D components
          (3D flowsplit volumes, same as used to predict acoustic results in mufflers). GT-SUITE is mostly
          complimentary to full 3D CFD in that the detailed analysis is very useful for more detailed spatial
          resolution of the flow and thermal solution, such asto analyze localized temperatures (say surface
          temperature of battery).  But on the other hand, full 3D CFD is too slow to model many operating
          conditions or to run Design of Experiments, where as COOL3D is practical for these applications
          while producing equal results as 3D CFD in overall system performance such as mass flow rate
          through a radiator or intercooler and sensitivity to spacing of thermal components.
     •    GT-SUITE uses a discretized solution of the internal and external side of the heat exchangers to
          capture interactions between the external underhood flow and the coolant (internal) flow side
          (for radiators) or air (for intercoolers), typically being integrated with the cooling system.

GT-SUITE's COOL3D preprocessor and flow solver also differ significantly from other 0D/1D analysis tools
in that it is much more predictive.  Other tools often require user input to impose (i.e. non-predictive)
flow distribution in regions where the flow is expected to re-direct around structural elements or when flow
redistributes due to pressure gradients, say due to variations in fan speeds between the center and the
blade  tips, where as GT-SUITE predicts these differences.

VT-Design Valvetrain Design Tool
VT-Design is a graphical preprocessing tool for valvetrain and cam design.  It has several capabilities,
which include:
      •    Cam design tool for creating cam profiles, including the ability to create and store different
               design strategies (i.e. different sets of constraint matches).
      •    Cam-profile reverse-engineering tool for converting an existing cam profile measurement back
                into an equivalent mathematical fit.
      •    Graphical tool for building and visualizing motion of commonly available cam and lifter mechanisms.

This preprocessor tool can give kinematic results of the mechanism, and can also output a detailed
GT-SUITE model that can be opened in GT-ISE for incorporation into a valvetrain's larger system or for
additional configuration, as desired, to perform different types of dynamic analysis. 

For more information contact: (or contact us online)
Gamma Technologies, Inc.  601 Oakmont Lane, Suite 220  Westmont, IL 60559  USA	Tel.  (630) 325-5848  Fax. (630) 325-5849 Email: CAE@gtisoft.com Web: www.gtisoft.com

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GT-SUITE v 7.2