Week 1 : Exploring the GUI of GT-POWER

Aim:

To  Explore the GUI of GT-suite and GT-power and explaining the listed the modules in a brief description.

GT-Suite:

The tool which is used to industry leading simulation tool with capabilities and libraries aimed at a large set of applications in industries.

It offers engineering functionalist ranging fast concept of design to detailed system or sub system for component analysis , design optimization and root cause investigation.

 

Preference of GT-suite

The tool is used in industries for a detailed purpose

It is recognized as a world wide industry standard for system simulation

Highly speed  in simulation

Used in many OEM’s

 

Industries  like such:

Aerospace Industry

Marine industry

Power generation

Industrial Machinery

 

Multi Physics Platform:

The foundation of GT-suite is a versatile multi Physics platform for construction models of general systems based on many under laying fundamental libraries:

Flow Library (any fluid,gas or liquid or mixture)

Acoustics Library ( both Linear and Non-linear)

Thermal library ( All types of heat transfer)

Mechanical library ( Kinematics , Muti -Body dynamics, frequency domain)

Electrical and Electromagnetic library(Circuits,Electro mechanical devices)

Chemistry Library ( Chemical kinetic)

Controls library (signal Processing)

Built- in 3D CFD and 3D FE ( Thermal and Structural Analysis)

 

Mode of Software and Unique Capabilities:

Functions of 1D and 3D simulations in one tool

Import Solid Models from cad to create 1D and 3D Models.

Perform embedded 3D CFD and 3D FE thermal /structural modelling with all boundary Conditions Provided by the simulated surroundings complete systems.

 

Capabilities:

Integrating with leading PLM tool and revision control tools ( Siemens , Microsoft , SVN)

System integration and collaboration tool

Includes tool - neutral co -simulation platform with FMI support (xlink)

Distributed Computing

DOE and Optimization

 

High Productivity and cost Advantages:

GT-suite includes important and valuable Productivity Tools that are included with all Licenses at no extra cost.

Fast Solver makes simulation of large system Practical

Highly acclaimed customer support , is considered the best in the industry

Highly Competitive Product Pricing

 

GT-SUITE:

It contains all GT Libraries and capabilities . The ideal choice for Full Vehicle design and Analysis , GT-Suite offers an all inclusive package that provides an important cost advantage to users.

 

GT-POWER:

The industry -leading software for engine simulation with a detailed cylinder model and combustion analysis

 

GT-SUITEmp:

It serves as a multi - physics platform to construct models in a wide range of applications including cooling systems and thermal management , vehicle and HEV fuel Economy , Hydraulics and Pneumatic,s  and etc…

In advance there are some tools and models in GT

GT-Autolion: Integrate autolion battery directly into GT-SUITE’s electrical and thermal domains.

GT-POWER-xrt: Tool dedicated to run detailed GT-power engine models on MIL/SIL/HIL Platform.

GT-SUITE RT: Run GT suite Models on HIl platform.

GT-Automation: A time saving enterprise package that allows simulation engineers to write Python code to manipulate GT models Pragmatically.

GT -Autolion -3D:

A 3D battery modelling capability that allows battery cell designers and buyers to study important factors that determine a battery performance , capacity and longevity .

GT-TAITherm:

Performs fast 3D cabin comfort analysis with a special version of TAITherm packaged directly  inside  GT -suite.

Advanced Combustion Tool set:

A collection of productivity tools for combustion analysis that enable both increased model fidelity and faster runtimes.

GT-Real Drive:

Simulate Vehicle models on real -world routes including traffic density, traffic signals and speed limits.

GT-Converge:Built in  3D  CFD  supporting  Co-simulation or stand alone analysis , both transient and steady-state.

GT-SpaceClaim: CAD model building and Preparation.

GT - Iinearization: Linearization of Models for controls development.

Some of the models used in GT-Suite are listed below.

Cool 3D:

Cool 3D is a tool that can be used to build 3D models of underhood thermal management flow systems that can be discretized and  made into model files for use with GT-Suite . It Provides the ability the model in a 3D environment so that the full details of the model can be included .It also includes sophisticated discretization logic that is able to transform the 3D model into a model file that is compatible with the GT-SUITE software COOL 3D can be used to build any flow system that contains only blockages , fans , heat additions and heat ex-changers.

GT-ISE:

It is the main interface where models are built and simulate are launched . It is an environment where all the elements are brought up into map and connected together linking the entire model .It creates the model  in sequence order step by step like engine cylinder , engine crank shaft, combustion , valve train etc..,

GEM 3D:

GEM 3D is a tool that can be used to build 3D models of flow , thermal , and Mechanical systems that can be discretized and made into models files for use with GT-SUITE . It provides the ability to build the model into a 3D Mode , so that the full details of the model can be included . It also includes sophisticated  discretization logic that is able to transform the 3D model into model file that is compatible with the GT-SUITE software , GEM 3D can be used to build any system that contains components like pipes, mufflers, manifold, air boxes etc..,

 

 

GT-POST :

GT-POST is a powerful data analysis tool which used to plot, and manipulate data generated either by GT-SUITE simulation or by an external source. It offers a more efficient data analysis solution than standard spreed sheet software , By employing data printers , the results  are over viewed in GT-POST are updated automatically and immediately when a model is changed and a simulation is rerun. Also  GT-POST lends itself nicely to the development of portable user -defined templates that controls how result are presented.

 

VT-DESIGN:

VT DESIGN is a stand alone , interactive cam/ Valve train/ spring design tool supplied with GT-SUITE that may be used as a processor to GT-SUITE . VT DESIGN is composed of three main features including the cam design features , the valve train design features and the spring design feature , These three features can be accessed at any time by clicking on the separate tabs in the lower left hand corner of the project window as titled.

 

VT DESIGN can be used to create a profile or automatically generate a  Multi Body Dynamic valve train model for analysis in GT-SUITE.

GT-SPACE CLAIM:

GT SPACE CLAIM is a tool that can be used to import CAD geometry of various formats, extract volumes and export them for discretization in GEM 3D ,Building and exporting  3D Models of flow systems is also possible . This basic shapes that can be created with GT -SPACECLAIM . These shapes are similar to the ones that can be created  in GEM 3D , and can be combined to form complex geometry.

TIME CONTROL FLAG:

Library--> flow control --> Home-->  Run setup --> Time control  

The definition of the global simulation type with regard to time. One of the following option are

 

Periodic:

Periodic Indicates that the model contains at least one circuit which contains a periodic event ( I.e Engine Cylinder “Cycle”) and therefore it requires tracking the result with respect to angle over each cycle . Any model that includes an ‘Engine crank train’, ‘Crank analysis’ Or ‘Engine crank shaft ‘ part should be use in periodic option.  Note that the simulation duration for a periodic simulation can be specified in cycles or in time, which ever is most convenient.

 

Continuous:

Continuous  indicates that the simulation includes no periodic event, and therefore has no need to track results with respect to a cyclic angle. This is the typical setting for models that contains only quasi- steady fluid circuits such as coolant or underhood air . the Simulation duration for a continuous simulation is typically specified in time.

 

TIME STEP AND SOLUTION CONTROL:

Open the GUI  of GT-Suite and open the flow control --> Home -->Run setup--> Flow control

 

Name of the Flow Control Explicit ,Flow control Implicit, Flow control QS reference object that can be used to define the numerical parameters for the explicit, implicit,  or quasi steady state solver , respectively.

 

INTEGRATION/SOLVER  TYPE:

   Open the GUI  of GT-Suite and open the flow control --> Home -->Run setup--> Flow control--> ODE control.

Integrator /solver type used in the time -marching of all  ODE’s including Mechanical, Electrical and magnetic libraries.

Explicit Adams PECE:

Explicit Adams - Bashforth - Moulton predictor -corrector integration scheme with variable order accuracy . This integrator is recommended for large Non Stiff problems , Problems with a high maximum time  step which have different scales and real time applications.It requires a tuning point in order to optimize its functionally

Explicit Runge Kutta:

Integration scheme that is the 5^th order accurate . this integrator is recommended for non-stiff  problems.

Implicit Trapezoidal:

Implicit Trapezoidal integration scheme that is the 2^nd order accurate . this integrator is recommended for moderately problems.

Implicit H H T:

Implicit  Hilber -Hughes -Taylor integration scheme  that is the 2^nd order accurate . This integrator is recommended for moderately stiff problems.

Implicit Radau2:

Implicit 2-stage Raadu integration scheme that is the 3^rd order accurate this integrator is recommended for stiff problems.

Implicit Radau3:

Implicit  3 - stage Radau integration scheme that is the 5^th order accurate . This integrator is recommended for stiff problems.

Implicit S D C3:

Implicit 3 stage spectral deferred correction( S.D.C) integration scheme that is 5 th order accurate . This integrator is recommended for very stiff problems.

3. EXPLORE INTERCOOLER TUTORIAL AND NOTE DOWN ALL THE SETTINGS:

     Open the GT Suite and click on files and then select tutorials then select engine performance and then 6 cylDITurbo and then select the inter-cooler _final.gtm

Thus the inter-cooler set up will shown in screen

Run setup:

In this module all the settings are done according to the results of our simulation to obtain the exact results. It contains the different setups like time control, Initialization , Flow control, ODE control, signal control , Thermal control Convergence RLT.

Each settings have a different attribute to run the simulation , we can go through all this section detailed in the images below.

Time Control:

Initialization:

Flow Control:

ODE Control:

Signal Control:

Thermal Control:

Convergence RLT:

ADVANCED SETUP:

Advance setup also have the different attributes and we can go through all this sections detailed in the below images it contains the different setup like general ,flow, Mechanics, Restart, version, changes,Paths, Misc files.

Each settings have a different attribute to run the simulation , We can go through all this sections detailed in the below images.

General:

Flow:

Mechanics:

Restart:

Version Changes:

Paths:

Misc Files:

PLOT SETUP:

To Visualize the plots are need to select to view the correct results.

Cycle and time plots are may be requested by selecting the appropriate plot from the “plot options” folder within each part. Each of these requests will result in a plot being stored ( This is  not true when the specific plot requires a certain modelling option to be used in order to calculate the results that are to be presented in the plot. For example , plot of the pipe wall temperature versus radius will be made only when the wall temp solver is used in the solver.)

Plot setup which is found under the “RUN “ Pull Down  menu gives the user a variety of options to change the way in which the plots are requested . if no changes are requested the default values, as specified in the top right corner of the plot set up dialog , will be used.

A button called  Remove plots is available to remove unwanted plot requests from plot setup. All plots requested in individual parts will be stored regardless of whether the user chooses to use plot setup.

Output setup:

GT-Post Processing data can be done . it is used for the accessing the data from the results , it contains the different Setup like

Data Storage, General, GT_Post_setup,Flow,ODE_Mech,Score board RLT, User score board RLT , End of run tables.

Each settings have a different attribute to run the simulation , We can go through all this sections detailed in the below images.

Data Storage:

General:

GT-Post_setup:

Flow:

ODE_Mech:

Scoreboard RLTs:

User score board RLTs:

End off run tables:

 

Inter cooler Problem:

 Open the GT Suite and click on files and then select tutorials then select engine performance and then 6 cylDITurbo and then select the inter-cooler _final.gtm

Now by double clicking on the inter cooler land box will pop up and change the diameter of the inlet and outlet =50mm and also the length of CAC =1000 mm as represented

Now By clicking the inlet 1 change the mass flow rate =1200kg/h  and temp=100 deg/c.

And foroutput port the pressure is 2 bar and temp is 30 degree celcius are given

And in the run setup the time simulation is set to 1sec and start the run command in order to setthe set the simulation.

The outputs are going to explore in GUI of GT -Post

The average heat transfer at charge air cooler (CAC) is 6.2882495 KW

Standard Map:

RLT Contour Plot:

The pressure drop across CAC is 7.0950327E-6 bar

Standard Map:

RLT Contour Plot:

Conclusion:

The GUI of GT suite are shown and understood

We found the set up by using tutorial

And understood the path of library of various tools in GUI

And finally for inter-cooler heat transfer  and  Pressure drop has been computed.