Model & approach
- Simulate operating states at a consistent valve position
- Evaluate pressure, velocity, density, temperature and local Mach number together
Project study
Flow characteristic of a compact valve
A compressible internal-flow analysis described valve throughput across several pressure states and connected the characteristic curve to local loss mechanisms.
Engineering question
The flow characteristic needed to be understood through separation, turning and cross-section changes rather than as an isolated series of values.
Boundary conditions
- Compressible gas flow across several differential-pressure states
- Fixed geometry and defined thermal state for the characteristic comparison
Results of the assessment
- Abrupt turning and area change produced a pronounced separated-flow region.
- The local flow fields explained the shape of the calculated valve characteristic.
Engineering consequence
The assessment identified the internal contours relevant to lower-loss valve development.
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