In fluid mechanics, CD is a dimensionless drag coefficient that is used to quantify the drag or resistance of an object moving through a fluid. The drag coefficient is a function of the object’s shape, its size, and the properties of the fluid.

## Other related questions:

### Q: What is CD in fluid flow?

A: CD is the coefficient of drag, which is a measure of how much resistance a fluid exerts on an object as it moves through it.

### Q: How is CD calculated in fluid mechanics?

A: The drag coefficient (CD) is a measure of how much drag a body experiences as it moves through a fluid. It is usually calculated by dividing the drag force by the square of the velocity.

### Q: What does coefficient of discharge CD mean?

A: The coefficient of discharge (CD) is a measure of how much fluid flows through a given area. It is typically used to determine the efficiency of a pump or other fluid-handling device.

### Q: What is difference between Cv and CD?

A: There is no significant difference between CV and CD. They both measure the same thing – the amount of variability in a data set. The only difference is that CV is calculated using the mean, while CD is calculated using the median.