Discussion
The ideal and measured pressure distribution of the flow through the venturi meter is shown in fig.1. It can be seen, that the pressure is minimum at the throat section, this is dueto the increase in velocity as the diameter decreases across the length of the tube. So the refore, the diameter of the tube is inversely proportional to the velocity, while proportional to the pressure of the fluid flowing through the tube. It is noticed that the curve for the measured pressure does not return to zero as the ideal one this is due to losses during the flow.The value of Coefficient of discharge is greater than one in our results, since the coefficient of discharge represents the ratio of actual flow rate to the measure flow rate. Therefore a value higher than one means that the actual flow rate is greater than the ideal one which isnot possible. This results is most likely due to errors in the apparatus used. Also ,From Fig.3 it is seen that the venturi meter coefficient (C
m
) and the discharge coefficient valuesoscillate between 0.001 to 0.001059 , 1.0145 to 1.1004 respectively. The Relation ship between the Recovery ratio and Reynolds number is shown in fig.4 notice the recovery ratio represents the difference between the actual and ideal pressure ratio distributions andis always below 1 as seen in fig.4
Discussion
The ideal and measured pressure distribution of the flow through the venturi meter is shown in fig.1. It can be seen, that the pressure is minimum at the throat section, this is dueto the increase in velocity as the diameter decreases across the length of the tube. So the refore, the diameter of the tube is inversely proportional to the velocity, while proportional to the pressure of the fluid flowing through the tube. It is noticed that the curve for the measured pressure does not return to zero as the ideal one this is due to losses during the flow.The value of Coefficient of discharge is greater than one in our results, since the coefficient of discharge represents the ratio of actual flow rate to the measure flow rate. Therefore a value higher than one means that the actual flow rate is greater than the ideal one which isnot possible. This results is most likely due to errors in the apparatus used. Also ,From Fig.3 it is seen that the venturi meter coefficient (C
m
) and the discharge coefficient valuesoscillate between 0.001 to 0.001059 , 1.0145 to 1.1004 respectively. The Relation ship between the Recovery ratio and Reynolds number is shown in fig.4 notice the recovery ratio represents the difference between the actual and ideal pressure ratio distributions andis always below 1 as seen in fig.4
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