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How are steady state or EPS headlosses determined for the TCV element, for each of the different initial status settings?
Status = Active
A TCV with a Status of 'Active' means the valve is partially closed and derives it's headloss from the "Headloss Coefficient". In this case the Minor Loss Coefficient is ignored.
Status = Inactive
When the Status is 'Inactive' the valve is fully open and the headloss is determined by the Minor Loss Coefficient. In this case the Headloss Coefficient is ignored.
In terms of headloss calculations, the initial settings headloss coefficient is the same as the physical minor loss coefficient setting. Meaning, they are both the "K" in the standard headloss equation Hl = KV^2/2g
A TCV with a Status of 'Active' means the valve is partially closed and derives it's headloss from the "Discharge Coefficient (Initial)". In this case the "Discharge Coefficient (fully open)" is not used.
When the Status is 'Inactive' the valve is fully open and the headloss is determined by the "Discharge Coefficient (fully open)". In this case the Headloss Coefficient is ignored.
A TCV with a Status of 'Active' means the valve is partially closed and derives it's headloss from the "Relative Closure (Initial)". A relationship between Relative Closure and relative discharge coefficient is established based on the selected "Valve Type". The relative discharge coefficient considers the "Discharge Coefficient (Fully Open)" to determine the discharge coefficient for the selected position (Relative Closure (Initial)).
Modeling an existing valves as throttle control valves in HAMMER