Simulation of Gas Turbines

WHAT IS Simulation of Gas Turbines

GSP is a generic modelling tool capable of modelling virtually any gas turbine engine configuration including (external) loads (like water breaks, pumps, generators, etc). GSP is primarily based on 0D-modelling (zero-D) of the thermodynamic cycle of the gas turbine. This implies that the flow properties are averaged over the flow cross section areas at the interface surfaces of the component models (inlet and the exit). GSP utilizes component model stacking to create the thermodynamic cycle of the engine of interest. Input of the model configuration is the cycle design, or any known reference point (or preferably several points) of a new engine. Information needed for the cycle configuration, eg. turbine and compressor maps, is readily available from the manufacturer or from the internet (e.g. manufacturer fact sheets, ASME papers, etc.).

 

Blade-to-blade section embedding for gas turbine CFD

Another common and important data analysis tool in turbomachinery is the blade-to-blade view. This is a surface-of-revolution about the machine axis at a percent distance from hub to shroud. Because the flow-path can be complicated, this blade-to-blade section is not a simple cylinder. Visualizing the flow solution at these specific sections is much easier to understand if the section is flattened out or embedded into the plane. This is typically done with something called an ′− (pronounced m prime theta) transformation.

FEATURES

GSP's most interesting features are listed below

• Flexible
• any kind of gas turbine configuration
• steady-state and transient off-design simulation
• NLR-developed custom components
• user-developed custom components
• object-orientation
• user-configurable graphical & tabular output formats
• backwards compatible
• Powerful
• high execution speed on standard PC's
• multiple effects on performance
• rapid analysis of complex problems
• simultaneous simulation of multiple models (twin-engine helicopter)
• user configurable control system logic
• user configurable control over equation system
• User-friendly
• graphical user interface (MS-Windows)
• drag & drop components or models
• on-line help, user manual & technical manual
• variety of graphical & tabular output formats
• Component based
• object-oriented architecture
• 0/1-dimensional modelling
• custom components
• Extended
• various libraries with custom components
• 3rd party component development kit available (GSP CDP)
• an application programming interface for interaction with other software (GSP API)