Hydrostatic Pressure Systems allow for the measurement and development of hydrostatic force and c... more Hydrostatic Pressure Systems allow for the measurement and development of hydrostatic force and center of pressure equations and values necessary to build and evaluate fluid systems. To demonstrate this capability, known masses were added to one end of an Edibon Hydrostatic Pressure System, and water was added into the system until the arm was level (balancing the moment about the pivot). The corresponding height of the water was recorded and used to calculate the center of pressure and hydrostatic force on the vertical rectangular quadrant. These values were plotted against the height of the water. This process was repeated for both partially and fully submerged surfaces. For the partially submerged surface, the center of pressure had a linear relationship with the height of the water, while there was a power relationship between these variables for a fully submerged surface. For the partially submerged surface, hydrostatic force had a power relationship with the height of the water, and, for a fully submerged surface, hydrostatic force had a linear relationship with the height of the water. Thus, in both cases, the data collected verified the relationships of center of pressure and hydrostatic force against height presented in the given equations. Because the moment about the pivot must be zero, the relationship between mass and height further confirmed these findings. In order to assess the accuracy of the measurements taken by the pressure system, the theoretical heights were compared to the experimental values of height. Because the slope of this relationship was nearly one, the accuracy of the pressure system was confirmed, and no calibration was needed. The plot of standard deviation between theoretical and measured height against measured height supports this result. Keywords. Hydrostatic Pressure System, hydrostatic force, center of pressure ydrostatic pressure is the pressure exerted by a fluid at rest due to the weight of fluid above the surface. Hydrostatic pressure and its resulting force have a wide variety of applications. These applications are as widespread as assembly line processes to irrigation and studies of soil properties. Thus, it is important to be able to measure and develop equations for hydrostatic force due to pressure as well as the center of pressure at which this force acts (Çengal and Cimbala, 2014). One device used to measure hydrostatic force is an Edibon Hydrostatics Pressure system. This device (fig. 1) is based on the principle that the sum of the moments about the pivot must be equal to zero. Thus, the moment due to the weight of the masses applied to the left end must be equal to the moment due to the hydrostatic force acting on the vertical rectangular quadrant (Humpherys, 1991). When known masses are applied to the end of the system, the pivot rotates. In order to balance the moment caused by the weight of the masses and return the pivot to equilibrium, water is added into the chamber of the pressure system.
Hydrostatic Pressure Systems allow for the measurement and development of hydrostatic force and c... more Hydrostatic Pressure Systems allow for the measurement and development of hydrostatic force and center of pressure equations and values necessary to build and evaluate fluid systems. To demonstrate this capability, known masses were added to one end of an Edibon Hydrostatic Pressure System, and water was added into the system until the arm was level (balancing the moment about the pivot). The corresponding height of the water was recorded and used to calculate the center of pressure and hydrostatic force on the vertical rectangular quadrant. These values were plotted against the height of the water. This process was repeated for both partially and fully submerged surfaces. For the partially submerged surface, the center of pressure had a linear relationship with the height of the water, while there was a power relationship between these variables for a fully submerged surface. For the partially submerged surface, hydrostatic force had a power relationship with the height of the water, and, for a fully submerged surface, hydrostatic force had a linear relationship with the height of the water. Thus, in both cases, the data collected verified the relationships of center of pressure and hydrostatic force against height presented in the given equations. Because the moment about the pivot must be zero, the relationship between mass and height further confirmed these findings. In order to assess the accuracy of the measurements taken by the pressure system, the theoretical heights were compared to the experimental values of height. Because the slope of this relationship was nearly one, the accuracy of the pressure system was confirmed, and no calibration was needed. The plot of standard deviation between theoretical and measured height against measured height supports this result. Keywords. Hydrostatic Pressure System, hydrostatic force, center of pressure ydrostatic pressure is the pressure exerted by a fluid at rest due to the weight of fluid above the surface. Hydrostatic pressure and its resulting force have a wide variety of applications. These applications are as widespread as assembly line processes to irrigation and studies of soil properties. Thus, it is important to be able to measure and develop equations for hydrostatic force due to pressure as well as the center of pressure at which this force acts (Çengal and Cimbala, 2014). One device used to measure hydrostatic force is an Edibon Hydrostatics Pressure system. This device (fig. 1) is based on the principle that the sum of the moments about the pivot must be equal to zero. Thus, the moment due to the weight of the masses applied to the left end must be equal to the moment due to the hydrostatic force acting on the vertical rectangular quadrant (Humpherys, 1991). When known masses are applied to the end of the system, the pivot rotates. In order to balance the moment caused by the weight of the masses and return the pivot to equilibrium, water is added into the chamber of the pressure system.
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