IC Engine Calibration using GT Power Understanding GT Power

The GT-SUITE has a lot of modules listed below:

1. Flow module.

The flow module has three sections. Components, Connections and References. The components consists of templates such as EngCylinder, EndFlowInlet, Compressor, EndEnviroment etc. The connections mentioned are InjAFSeqConn, InjProfileConn, InjRateConn etc. The references templates are used in parts such as Compressor Map, Supercharger Map, Turbine Map etc.

2. Mechanical module.

This module consists of components such as EngineCrankTrain, ShaftTurbo, Torque, SpeedBoundaryRot and PowerRot. The connections include TireConn, TorsionConn and TqConvConn. References consists of ODEControlExplicit.

3. Control module.

The control module consists of Components and Connections with different tempelates.

4. Acoustics module.

The acoustics modules consists of Components and References. The acoustics module is sed for intake and exhaust manifold. The components consists of AcoustInsLoss, EndflowAnechoic, AcoustTMTSource etc.

5. General module.

The general module consists of Components which consists of SubassemblyExternal and References which has RLTScoreBoardListdef.

The tie control flag is situated in the run set up under time control

The timesteo and solution control is located in Run set up as well under flow control.

The intercooler tutorial:

Run Setup:

The time control flag is set to continous. Maxium solution time is 0.5 s and minimum tie is ignored. Under flow control time steo and solutio control is set to explicit. under ODEControl matrix sparse format solver is skyline. Matrix mode optimizaton method is is Cuthill-Mckee. Integrator solver type is explicit Runga Kutta method. Time step and solution control object Explicit-def.

Advanced setup:

The advanced set up consists of the general, flow, Mechanics, restart, verision changes, paths and msc files.

The general consists of fixed time step size, initial seed for random number genration.

Flow consists of lot of parameters where you enter the pressure loss coefficients based on pipe bends. Gas equilibrius calculation and many other parameters.

Plot set up:

Output set up:

The output set up has a lot of tabs in it such as Data storage. General, GT-Post set up, flow, ODE-Mech, ScoreboardRLT\'s, UserScoreboardRLT\'s and End of run tables.

Pressure drop accross the cylnder after boundary conditions shows a pressure drop of 7.09E-06 bar.

The total heat transfer accross the Charge air cooler is ,

From the post file we get that the averged temperature inlet and averaged temperature outlet is given at the CAC as 369.19 and 349.46 respectively.

The avergaed mass flow rate s given as 0.33kg/s

The Cu of the CAC is since of made of steel is given as 510 J/kg-K

The formula heat transfer is given as Q= mCu(T2-T1),

which given the total heat transfer as 3.36 kJ.