Characteristics of Open-Channel Flow
ABSTRACT/ SUMMARY
The objective of this experiment is to determine the characteristics of open-channel flow. The types of flow to be determined are rectangular notch and triangular v-notch. Another objective of the experiment is to determine the discharge coefficients for both notches.
The experiment for rectangular notch begins with admitting water to the channel. At this point, the water flow must be adjusted by using control valve in order to obtain heads (H). Throughout the experiment, five different heads are used to determine the flow rate of water. The heads reading is taken after the condition of water is stable. Use stopwatch to measure the time taken for the water level to rise 3 litres. This step is repeated thrice to calculate the average time taken for the water to rise.
The same steps are used for v- notch. All required data are recorded in a table.
INTRODUCTION
This experiment is conducted and the purpose of this experiment was conducted is to demonstrate the characteristics of flow over weirs and to determine the discharge coefficients for both notches. They are used in different notches that are rectangular notch and V-notch. This is done by direction observation of general features of flow. Discharge coefficient values can be determined from the corresponding volume flow rate and the measurements of the height of water above the notch base. All results have been recorded and calculated.
Basic experiments are conducted on rectangular broad-crested weirs with different heads. It is found that the discharge coefficient of a rectangular broad-crested weir is related to upstream total head above the crest, length of weir and channel breadth. Multiple regression analysis equations based on the dimensional analysis concept are developed to compute the discharge coefficient of rectangular broad-crested weirs. Meanwhile, the discharge coefficient equation is used to compute the discharge over the broad-crested weirs. Good agreements between the
The objective of this experiment is to determine the characteristics of open-channel flow. The types of flow to be determined are rectangular notch and triangular v-notch. Another objective of the experiment is to determine the discharge coefficients for both notches.
The experiment for rectangular notch begins with admitting water to the channel. At this point, the water flow must be adjusted by using control valve in order to obtain heads (H). Throughout the experiment, five different heads are used to determine the flow rate of water. The heads reading is taken after the condition of water is stable. Use stopwatch to measure the time taken for the water level to rise 3 litres. This step is repeated thrice to calculate the average time taken for the water to rise.
The same steps are used for v- notch. All required data are recorded in a table.
INTRODUCTION
This experiment is conducted and the purpose of this experiment was conducted is to demonstrate the characteristics of flow over weirs and to determine the discharge coefficients for both notches. They are used in different notches that are rectangular notch and V-notch. This is done by direction observation of general features of flow. Discharge coefficient values can be determined from the corresponding volume flow rate and the measurements of the height of water above the notch base. All results have been recorded and calculated.
Basic experiments are conducted on rectangular broad-crested weirs with different heads. It is found that the discharge coefficient of a rectangular broad-crested weir is related to upstream total head above the crest, length of weir and channel breadth. Multiple regression analysis equations based on the dimensional analysis concept are developed to compute the discharge coefficient of rectangular broad-crested weirs. Meanwhile, the discharge coefficient equation is used to compute the discharge over the broad-crested weirs. Good agreements between the
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