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Table 2

Average value of the Nash–Sutcliffe coefficient between experiments and mathematical values. Equation (5) is relative to the data plotted in Figures 3–5, where the float valve area is kept constant. Equation (7) is relative to the data plotted in Figures 7–9 where the float valve area is modelled through hyperbolic law

Test case	Model	2 bar	2.5 bar	3 bar	3.5 bar	4 bar	4.5 bar	5 bar
TC1	Equation (5)	0.993	0.995	0.996	0.996	0.994	0.995	0.994
TC2	Equation (5)	0.994	0.996	0.995	0.997	0.996	0.997	0.997
TC3	Equation (5)	0.995	0.996	0.997	0.997	0.998	0.998	0.998
TC1	Equation (7)	0.995	0.999	0.998	0.997	0.998	0.997	0.997
TC2	Equation (7)	0.996	0.998	0.998	0.998	0.998	0.999	0.999
TC3	Equation (7)	0.997	0.997	0.998	0.998	0.998	0.999	0.999

Test case	Model	2 bar	2.5 bar	3 bar	3.5 bar	4 bar	4.5 bar	5 bar
TC1	Equation (5)	0.993	0.995	0.996	0.996	0.994	0.995	0.994
TC2	Equation (5)	0.994	0.996	0.995	0.997	0.996	0.997	0.997
TC3	Equation (5)	0.995	0.996	0.997	0.997	0.998	0.998	0.998
TC1	Equation (7)	0.995	0.999	0.998	0.997	0.998	0.997	0.997
TC2	Equation (7)	0.996	0.998	0.998	0.998	0.998	0.999	0.999
TC3	Equation (7)	0.997	0.997	0.998	0.998	0.998	0.999	0.999

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