# Pressure & Flowrate - Can Flow Rate Determine Pressure?

• Arin_Mukherji
In summary, the relationship between pressure and flow rate is described by Bernoulli's principle, in which an increase in flow rate results in a decrease in pressure and vice versa. Flow rate can determine pressure and a change in flow rate affects pressure accordingly. Factors such as fluid properties, channel diameter, and flow obstacles can affect both flow rate and pressure. These can be measured using specialized instruments in units of volume per unit time and force per unit area respectively.
Arin_Mukherji
If we know the flowrate of a pump, is it possible to find out the pressure of the pump?

Arin_Mukherji said:
If we know the flowrate of a pump, is it possible to find out the pressure of the pump?

Yes...if you have a pump curve.

CS

stewartcs said:
Yes...if you have a pump curve.

CS

The problem is I don't have one

Arin_Mukherji said:
The problem is I don't have one

In that case you cannot find the pressure knowing only the flow rate of the pump.

Contact the manufacturer of the pump, they will give you one.

CS

## 1. What is the relationship between pressure and flow rate?

The relationship between pressure and flow rate is known as Bernoulli's principle, which states that as the velocity of a fluid increases, its pressure decreases. This means that as flow rate increases, pressure decreases, and vice versa.

## 2. Can flow rate determine pressure?

Yes, flow rate can determine pressure. As mentioned in Bernoulli's principle, the two are inversely related. This means that if the flow rate is known, the pressure can be calculated or estimated.

## 3. How does a change in flow rate affect pressure?

An increase in flow rate will result in a decrease in pressure, and a decrease in flow rate will result in an increase in pressure. This is because as the fluid moves faster, it exerts less pressure on its surroundings.

## 4. What are some factors that can affect flow rate and pressure?

Factors that can affect flow rate and pressure include the properties of the fluid (such as viscosity and density), the diameter of the pipe or channel through which the fluid is flowing, and any obstacles or obstructions in the flow path.

## 5. How is flow rate and pressure measured?

Flow rate is typically measured in units of volume per unit time (such as liters per second or cubic feet per minute), while pressure is measured in units of force per unit area (such as pounds per square inch or pascals). Both can be measured using specialized instruments such as flow meters and pressure gauges.

• Mechanics
Replies
30
Views
1K
• Materials and Chemical Engineering
Replies
2
Views
613
• Classical Physics
Replies
10
Views
968
• Mechanics
Replies
32
Views
4K
• Mechanics
Replies
3
Views
1K
• Mechanics
Replies
26
Views
5K
• Mechanics
Replies
15
Views
3K
• Mechanical Engineering
Replies
38
Views
2K
• Mechanical Engineering
Replies
3
Views
1K
• Mechanics
Replies
69
Views
3K