Assignment 1

Ans. 1 Various modules of GT-SUITE are:

1. GT-ISE v2019 (ISE module is for modelling a given problem, this may include engine performance prediction, crank train mechanism modelling, etc. the output results from GT-ISE can be viewed in GT_POST)
2. GEM3D v2019 (GEM 3D for 3D model part to GT model conversion, we can import the CAD models in .stl format. Further a given CAD model can be converted into GT model with set of connection and components)
3. GT-POST v2019 (Output results of GT-ISE are shown in GT-POST, results may be in form of contour plot, graphs that are very helpful in flow and performance analysis)
4. GT-SPACECLAIM v2019 (For 3D model building, we can make sketch which can be converted to 3D model, further various 3D model repair commands are available)
5. VTDESIGN v2019 (For Cam designing, that includes the profile of cam modelling and validation. It also includes valve train modelling that is similar to multi body dynamics for validating working valve timing control mechanism. Spring design and analysis can also be done in this module).

Ans. 2 Run Set Up -> TimeControl

Run Set Up -> FlowControl

Run Set Up -> ODE Control

Ans. 3

RunSet Up setting:

1.TimeControl

• Time control flag: Continous
• Maximum simulation duration: 0.5sec.
• Min. simulation duration: ign
• Automatic Shut-Off when steady state is reached: ON
• Main drive: Automatic

2.Initialization

• Initialization state: User_imposed

3. FlowControl

• Time Step and solution object: FlowControlExplicit

4. ODEControl

• Part Name List Object Identifying Circuits Belonging to Column: def
• Matrix Sparse Format Solver (BETA for CSR): Skyline
  
• Matix optimization method: Cuthill-McKee
• Integrator/ solver type: Explicit-Runge-Kutta
• Time step and output frequency: ODEControlExplicit
• Time Step Output Frequency: def
• Solve All Circuits Together (Single Solution Cluster for the Column): Yes
• Displacement SS Tolerance for Auto Shut-Off: ign
• Velocity Steady-State Tolerance for Auto Shut-Off: ign
• Torque Imbalance Tolerance for Auto Shut-Off: def
• Consecutive Cycles/RLT Update Intervals for Steady-State: 1
• Modal Analysis Property Object: ign
• Matrix Inversion Scheme (electrical sol. only):SVD

Plot set up:

• Plot points: 1500
• Sampling type: Timestep
• X-axis: Automatic
• Sampling interval: 1
• Interpolation option: Use nearest volume
• Plot range: automatic

Output SetUp:

1. Data storage [For output RLT result setting]

• RLT data storage setting
• Plots and Table data storage setting
• General

2. General [For output plots setting]

3. GT-post_SetUp

• Setup for RLTs
• Add Companion GU to this Model for Automatic Report Creation

4. Flow

• Data Storage
• Miscellaneous Flow Options

5. ODE-Mech [For 2D plots and animation]

6. ScoreboardRLTs [Shows RLTs present in attribute]

Advanced SetUp:

1. General [For overridding time step and defining initial seed value]

2. Flow [For corrections, flow laws, etc.]

3. Mechanics [Whether to consider effect of gravity]

4. Restart [Restart file storage]

5. VersionChange [For version change from v2019, v2018, v72,v71 for better initialization, intergation and corrections. Also for better selection of the object in an attribute].

This includes following sub settings:

• General
• Acoustics
• Compressors, turbine and pumps
• Controls
• Cranktrain
• Cylinder
• Data
• Friction and tribology
• Electrical
• Flow, others
• Fluid properties
• Heat exchanger
• Hydraulic
• Injectors
• Miscellaneous
• Orifice, valve, throttle
• Pipe, flowsplits
• Thermal
• Uncategorized

Ans. 4 Total heat transfer: 8.7317

Pressure drop: 0.08368