Discussion of "Experimental Modeling of Submerged Pivot Weir" by M. Bijankhan and V. Ferro.

Thus, similar to Wahlin and Replogle's ([3]) recommendation, it is suggested to calculate the discharge over the whole range HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>y</mi><mi>t</mi></msub><mo stretchy="false">/</mo><mi>p</mi><mo> </mo><mn>1</mn></mrow></math> ht , from the free flow formula. In this situation, as HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>y</mi><mi>t</mi></msub></mrow></math> ht approaches HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>y</mi><mrow><mi>t</mi><mi>d</mi></mrow></msub></mrow></math> ht , the ratio of HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msubsup><mi>Q</mi><mi>S</mi><mo>*</mo></msubsup><mo>=</mo><msub><mi>Q</mi><mi>S</mi></msub><mo stretchy="false">/</mo><msub><mi>Q</mi><mi>F</mi></msub></mrow></math> ht is expected to change by about 1. From Eq. (24) and for HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>y</mi><mi>t</mi></msub><mo>-></mo><msub><mi>y</mi><mrow><mi>t</mi><mi>d</mi></mrow></msub></mrow></math> ht , HT <math display="inline" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msubsup><mi>Q</mi><mi>S</mi><mo>*</mo></msubsup><mo>~</mo><mn>1</mn><mo stretchy="false">/</mo><mo stretchy="false">(</mo><mn>1</mn><mo>+</mo><msub><mi>b</mi><mi>s</mi></msub><msubsup><mo stretchy="false">)</mo><mi>s</mi><mi>a</mi></msubsup></mrow></math> ht . [Extracted from the article]