- #1

Sunny1261

- 13

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I have a fairly simple wind tunnel question but I cannot seem to connect the pieces.

## Homework Statement

Consider a low speed one-circuit wind tunnel with an inlet to throat ratio of 12. The pressure difference between the inlet and the test section was measured to be 10 centimeters of mercury on a U-tube mercury manometer. Calculate the velocity in the tunnel test section. Also, compute the total pressure in the test section.

## Homework Equations

What is the pressure?

## The Attempt at a Solution

With the aid of Bernoulli's equation and equation of continuity, I was able to determine the velocity in the test area to be 147 m/s. With the equation of continuity, the velocity in the settling chamber is 12.25 m/s.

Using this, I'm able to solve about 1/2 of Bernoulli's equation, but I am still left with two pressure terms, and therefore, am unable to solve for the total pressure in the test section.

Thanks.

A hint would be much appreciated,

Sunny