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Idea04
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Does water that encounters pressure difference or slight resistance have the same flow rate if there were no pressure difference's or resistance at all?
For flow in a pipe with no losses, the energy density is constant (Bernoulli's equation):Idea04 said:Does water that encounters pressure difference or slight resistance have the same flow rate if there were no pressure difference's or resistance at all?
No. If there were no weight pushing down in the large column, the water would move faster. Think about it in terms of energy. If the energy of the incoming water is not used in lifting the weight, what must be happening to the energy of the water in the large side? (Hint: apply Bernoulli's equation)Idea04 said:well I'm talking about water flowing vertically downward through a pipe. Then enters upward through a larger column filled with water with a piston or weight on top pushing downward on the water. but the pressure in the larger column is lower than the pipe flowing downward. Would the flow entering the large column still be the same as it would be if there were no pressure pushing downward in the larger column?
It is all about pressure. Water will flow from higher pressure to lower pressure.Idea04 said:so if I'm to get this right the weight pushing down exerts pressure and will slow the amount of water entering the column. so when the column has less water in it, the flow rate would increase compared to if the column has a higher amount of water in it.
Why? Analyse the forces on the weight. What is the force pushing it down? What is the force that opposes it? How do they compare?Idea04 said:Ok then. But if we reverse that flow and the weight lowers pushing the water out, Will the flow be the same even though the pressure drops with depth? Because wouldn't the weight always lower at a constant rate?
The flow rate of water with pressure difference refers to the amount of water that passes through a specific point in a given amount of time. It is typically measured in liters per second or gallons per minute.
The flow rate of water is directly proportional to the pressure difference. This means that as the pressure difference increases, the flow rate also increases. Similarly, as the pressure difference decreases, the flow rate decreases.
The flow rate of water can be calculated using the equation Q = A * V, where Q is the flow rate, A is the cross-sectional area of the pipe, and V is the velocity of the water. It can also be calculated using a flow meter, which directly measures the flow rate.
Besides pressure difference, the flow rate of water can also be affected by the viscosity and density of the water, the diameter of the pipe, and any obstructions or restrictions in the flow path.
The flow rate of water is an important factor in the design and functionality of water systems. It determines how quickly water can be delivered to a specific location and how much water is needed to meet the demand. Low flow rates can result in inadequate water supply, while high flow rates can result in excessive water usage and waste.