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# What is a velocity triangle in turbine calculations?

## What is a velocity triangle in turbine calculations?

In turbomachinery, a velocity triangle or a velocity diagram is a triangle representing the various components of velocities of the working fluid in a turbomachine. Velocity triangles may be drawn for both the inlet and outlet sections of any turbomachine.

What is relative velocity in velocity triangle?

The concept of relative velocity (w) is used in turbomachinery design and defines the velocity of a fluid particle in relation to the rotating impeller. Together with the absolute velocity (v) and the circumferential speed (u) it forms the velocity triangle.

Why velocity triangle is used?

Velocity triangles are typically used to relate the flow properties and blade design parameters in the relative frame (rotating with the moving blades), to the properties in the stationary or absolute frame.

### Is velocity the hypotenuse?

The horizontal line is the horizontal velocity. The hypotenuse is the initial velocity.

What is velocity triangles in pump?

How do you find velocity using Pythagorean Theorem?

Using the Pythagorean Theorem, \begin{align*}v_x{^2}+v_y{^2}=v^2\end{align*}, gives the magnitude of the instantaneous velocity of the projectile once the square root is taken.

#### Can you use Pythagorean theorem for velocity?

Velocity is a vector and speed is a scalar. Speed is the length of the velocity vector, calculated using the Pythagorean theorem: A vector has length and direction, a scalar is just a number.

What is velocity triangle in centrifugal pump?

V1: The absolute velocity of water, which enters at the inlet. V2: The absolute velocity of water, which enters at the inlet. U1: The tangential velocity at the inlet. U2: The tangential velocity at the outlet. Vr1: The relative velocity of water at the inlet.

What do you understand from velocity diagram of centrifugal compressor?

Velocity Diagram of Centrifugal Compressor (i) The flow phenomenon is steady and uniform throughout. (ii) There is no separation of flow. (iii) The flow through the impeller is frictionless.

## What is relative velocity?

Definition of relative velocity : the vector difference between the velocities of two bodies : the velocity of a body with respect to another regarded as being at rest — compare relative motion.

How do you calculate total velocity?

Provided an object traveled 500 meters in 3 minutes , to calculate the average velocity you should take the following steps:

1. Change minutes into seconds (so that the final result would be in meters per second). 3 minutes = 3 * 60 = 180 seconds ,
2. Divide the distance by time: velocity = 500 / 180 = 2.77 m/s .

How do you find the velocity vector?

Let r(t) be a differentiable vector valued function representing the position vector of a particle at time t. Then the velocity vector is the derivative of the position vector. v(t)=r′(t)=x′(t)ˆi+y′(t)ˆj+z′(t)ˆk.

### How to calculate speed, distance and time using a triangle?

Speed = Distance/Time

• Time = Distance/Speed
• Distance = Speed x Time
• How do you calculate the angle of a triangle?

Identify and label the three interior angles of any triangle

• Recall that the interior angles of all triangles add to 180°
• Demonstrate a proof of the sum of interior angles of triangles
• Apply a formula for the sum of interior angles of any triangle
• Calculate the missing measurement of any interior angle of any triangle
• How to calculate the angles and sides of a triangle?

Find which two sides we know – out of Opposite,Adjacent and Hypotenuse.

• Use SOHCAHTOA to decide which one of Sine,Cosine or Tangent to use in this question.
• For Sine calculate Opposite/Hypotenuse,for Cosine calculate Adjacent/Hypotenuse or for Tangent calculate Opposite/Adjacent.
• #### What is the speed of a triangle?

Speed, distance and time can be calculated using a magic triangle. D (the distance) goes in the top of the triangle, S (speed) goes in the bottom left of the triangle and T (time) goes in the bottom right of the triangle. A car covers a distance of 150 miles in 2 ½ hours.