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Heat transfer can affect the fluid density at the nozzle exit, which in turn can impact the fluid velocity. An increase in heat transfer can lower the fluid density, resulting in an increase in velocity at the nozzle exit due to conservation of mass. Conversely, a decrease in heat transfer can raise the fluid density, leading to a decrease in velocity.
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What is the difference between Diffuser and nozzle?
A nozzle is a device which increases the velocity of fluid by decreasing the Pressure but contrary to it Diffuser is a device that increases the Pressure of fluid at the expense of its velocity
How do you calculate the velocity of nozzle in cylinder?
The velocity of the nozzle in a cylinder can be calculated by dividing the displacement by the amount of time. For example, if 1 cubic foot of gas is released over 1 minute, it would have a velocity of 1 foot per minute.
Why does pressure drops in a nozzle?
Pressure drops in a nozzle due to the conversion of potential energy into kinetic energy as the fluid accelerates through the nozzle. This decrease in pressure is necessary for the fluid to reach a higher velocity.
How does the velocity of the fluid effects the convection heat transfer?
The velocity of the fluid affects convection heat transfer by increasing the heat transfer rate. Higher fluid velocity results in better mixing of the fluid, reducing boundary layer thickness and increasing heat transfer coefficient, which enhances the convection heat transfer process.
Does pressure change affect velocity?
Yes, pressure changes can affect the velocity of a fluid. In a closed system like a pipe, an increase in pressure typically increases the fluid velocity due to conservation of mass. Similarly, a decrease in pressure can result in an increase in fluid velocity to maintain mass flow rate.
Why Fluid Speed Increases in the Divergent Portion of a Convergent-Divergent nozzle?
Because the fluid is allowed to expand in the nozzle it increases velocity to fill in the voids created by the shape of the nozzle. The convergent point of the nozzle acts like a bottleneck trying to slow the fluid and compress it into the reduced crosssection of the nozzle. As it leaves the minimum crosssection it expands into the divergent spaces of the nozzle increasing in velocity as it expands. ++_+ No: it gains velocity through the convergence but in the diverging section, trades velocity for pressure.
What is the difference between Diffuser and nozzle?
A nozzle is a device which increases the velocity of fluid by decreasing the Pressure but contrary to it Diffuser is a device that increases the Pressure of fluid at the expense of its velocity
How do you calculate the velocity of nozzle in cylinder?
The velocity of the nozzle in a cylinder can be calculated by dividing the displacement by the amount of time. For example, if 1 cubic foot of gas is released over 1 minute, it would have a velocity of 1 foot per minute.
Why does pressure drops in a nozzle?
Pressure drops in a nozzle due to the conversion of potential energy into kinetic energy as the fluid accelerates through the nozzle. This decrease in pressure is necessary for the fluid to reach a higher velocity.
What are the advantages and disadvantages of flow nozzle?
One disadvantage in the convergent-divergent nozzle as a shock wave can take place in the nozzle A nozzle is a device that converts pressure energy to kinetic energy (increasing fluid velocity on the account of static pressure) For a convergent nozzle there is no disadvantages as it can raise the fluid velocity only for the sonic speed the convergent-divergent type raises the velocity to over than sonic speed making supersonic flow, this could make a shock wave in the nozzle that turns the supersonic flow to subsonic flow
How does the velocity of the fluid effects the convection heat transfer?
The velocity of the fluid affects convection heat transfer by increasing the heat transfer rate. Higher fluid velocity results in better mixing of the fluid, reducing boundary layer thickness and increasing heat transfer coefficient, which enhances the convection heat transfer process.
What is the working principle of convergent-divergent nozzle?
A NOZZLE IS A DUCT WHICH CONVERT HEAT ENERGY INTO KINETIC ENERGY.IT INCREASES VELOCITY OF FLUID PASSING THROUGH IT ,AT THE EXPENCE OF PRESSURE. STEAM EXPANDS IN NOZZLE FOLLOW RANKINE CYCLE.FLOW THROUGH NOZZLE IS ISENTROPIC. mritunjay04@gmail.com
what is purpose of nozzle in steam turbine?
It sends hot gases from the combustion chamber to the 1st stage turbine blades at the correct angle and speed
Does pressure change affect velocity?
Yes, pressure changes can affect the velocity of a fluid. In a closed system like a pipe, an increase in pressure typically increases the fluid velocity due to conservation of mass. Similarly, a decrease in pressure can result in an increase in fluid velocity to maintain mass flow rate.
How velocity of fluid effects the convection heat transfers?
The velocity of the fluid affects convection heat transfer by influencing the rate at which heat is transferred. Higher fluid velocity results in increased heat transfer due to improved mixing and enhanced convective heat transfer coefficients. This can lead to more efficient cooling or heating processes in applications like heat exchangers or HVAC systems.
What is critical pressure in nozzle?
Critical pressure in a nozzle is the pressure at which the flow of material through the nozzle reaches its maximum. Beyond which any increase in pressure will not result in an increase in flow. The point at which the velocity of a fluid in the throat of the nozzle reaches the local speed of sound, creating a sonic wave, or a sonic choke.
What is jet impingement?
A fluid stream issuing from a nozzle at high velocity and hence a high kinetic energy term as Jet. The fluid at high velocity impinges on the plate or vanesthrough a fluid jet is know as Jet impingement.when the jet impinges on thevane,the momentum of the vane is changed and hydrodynamic force is exerted.
