gsphelp  Gas turbine models

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gsphelp  Gas turbine models

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Gas turbine engine models in GSP are represented on the model panel in the project window including a number of components models. The set of components on the model panel represents the configuration or case selected in the project tree.

 

Due to the object oriented structure of GSP, all models have their own environment of options, status, operating conditions, input specification data, output table and graph windows etc. That is why GSP is capable of managing different models at the same time (and copying components from one model to another). Models may also be used as component libraries.

 

Internally GSP keeps track of the components and their arrangement in order to set up a number of state variables. The state variables are embedded in a number of "virtual" implicit non-linear differential equations, hidden in the code of the various components (see Model theory). The non-linear equations represent the actual complex gas turbine model performance characteristics. Each model maintains its own set of equations. Different models may be open at the same time and be run intermittently, for example to compare results.

 

Most GSP component models use "maps" to represent multi-dimensional non-linear component characteristics. These maps are stored in text files, read into the component' s memory upon model initialization and have to be present in the specified location or embedded in the model.