Water hammer analysis
This case study demonstrates the capability of Flownex to simulate the water hammer effect by simulating the sudden closure of a valve at the outlet of a long pipe in which water is flowing. In practice, this closure could be facilitated by a fast acting valve or similar device. The model takes the fluid and pipe wall elasticity into account.
Turbine protection - Two phase flow regimes
The main challenge explored in this case study is the root cause analysis of dynamically hazardous movements in the distillate lines to a plant deaerator. Flownex's simulation optimization tool was used to determine the preferred two phase flow regime. By using Flownex to identify the cause, it was possible to mitigate a commercial impact on the project, maintain the planned commissioning schedule and improve the existing plant design thereby also removing the safety risk of unwanted dynamic line movements.
Transient Simulation of a Two-Stage Air Cycle Chiller
This case study demonstrates the transient operation of a two-stage Air Cycle Chiller. The chiller consists of a closed cycle in which dry air is circulated via a set of centrifugal compressors and expanded through a turbine to provide cooling at very low temperatures. A typical application is in crust freezing of pre-baked foods.