General Electric LM2500 Gas Generator

One of Thiagarajah's prime concerns was integrating existing GE information into the overall model. In particular, Thiagarajah wanted to model the starter motor, ignition system, ventilation fan, and lubrication oil pumps based on GE specifications. "The map block provided an easy and reliable way to incorporate this data directly into the simulation," explained Thiagarajah. "I could perform 1-, 2-, or 3-D table lookups, depending on how the data was organized."

With a fully functioning model, Thiagarajah was able to create and validate complicated control algorithms for start-up sequencing and fuel controls, and stimulate both the transient and steady-state behavior of the system. He also had a safe environment in which to test emergency trips and alarms that would be too costly or dangerous to perform on the physical system.

In the end, both Honeywell and their customer were extremely satisfied with Thiagarajah's work. Honeywell found that VisSim was the most effective and easiest PC-based solution for developing complex simulation models. Honeywell's customer ended up with an operational system that met all their requirements.

"We have a similiar project coming up soon -- an offshore oil rig in Norway that has 10 compressors and 4 Rolls Royce gas turbines. I fully expect to use VisSim to great effect again."