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The blades of an axial flow turbine have the aerofoil shape...
Also,for the axial flow turbines... Vf1=Vf2
The water strikes the blade surface at the same time from the root to its tip and a stream of water will leave the water at the correspondin trailing edge.
Therefore,for inlet to outlet,the radius and blade velocity will be the same,BUT the blade velocity will be different at different sections of the blade due to variation in the radial distance,which implies that the velocity triangles for each section of the blade will be different.In order to achieve shockless flow,the inlet and outlet triangles of a blade must vary from root to its tip,and therefore,axial flow turbine blades are twisted...
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How does a Ljungstrom steam turbine work and look like?
Ljungstrom Turbine is a Radial Outflow Steam Turbine with two counter rotating discs. Blades are mounted in circles one bigger than the other. Blades of one rotor work as nozzles for the other rotor blades. This turbine design is very forgiving on wet steam. It is said that the turbine design had limitations on scaling up above 30 MW and hence could not compete with Axial Flow Turbines.
Static force analysis on over head fan?
Centrifugal force of the fan results in an increase in static force. The blades of the axial flow fans force air to move parallel to them.
What are specifications of axial flow compressors?
Axial flow compressors are characterized by their design, which allows air to flow parallel to the axis of rotation through a series of rotating and stationary blades. Key specifications include the pressure ratio, which indicates the increase in pressure from inlet to outlet, typically ranging from 2:1 to 10:1; efficiency levels, often between 85% to 90%; and airflow capacity, measured in cubic feet per minute (CFM) or kilograms per second (kg/s). Additionally, they are known for their compact design and high rotational speeds, typically operating at several thousand RPM, making them suitable for applications in jet engines and gas turbines.
What is tHe purpose of inlet guide vanes in gas turbine?
In axial flow compressors, the primary purpose of IGVs (fixed or variable) is to guide the airflow onto the first stage rotor blades at an appropriate or required angle of attack.
What is difference between radial flow turbine and axial flow turbine?
in a radial flow turbine the steam enters the turbine in the direction of its radius and leaves it in the direction of the axis of the shaft. in a axial flow turbine the steam enters the turbine in the direction of the axis of the shaft and leaves the turbine in the same direction.
What is axial blade?
An axial blade refers to a type of blade design commonly used in turbomachinery, such as gas turbines and compressors, where the flow of fluid moves parallel to the axis of rotation. These blades are typically characterized by their elongated shape and are arranged in a series to efficiently direct the flow of air or gas in a straight line. Axial blades are essential for optimizing performance in applications requiring high efficiency and high flow rates. Their design helps minimize losses and enhance the overall aerodynamic efficiency of the system.
Axial flow turbomachines?
These are machines dealing with fluids, like (Axial Compressors, pumps and Fans). the term "Axial" is given due to the direction of inward and outward flow. In axial turbo machines the direction of outward flow is the same as the direction of the inward flow since the blades of the machines doesn't change the direction of flow.
How do wind turbines harness the suns energy?
It happens because the Sun heats the ground in the daytime and that heats the air above, which causes winds to flow and drive the blades of the wind turbines.
What has the author David Rosenbaum written?
David Rosenbaum has written: 'Sasha's trick' 'Computer program for generating input for analysis of impingement-cooled, axial-flow turbine blade' -- subject(s): Fluid dynamics, Transmission, Turbines, Heat, Data processing, Computer programs, Jets, Blades
Which direction do the turbines spin in when the tides come in and out?
Turbines typically spin in the same direction regardless of whether tides are coming in or going out. The direction of spin is determined by the design of the turbine blades and the flow of water.
How does a Ljungstrom steam turbine work and look like?
Ljungstrom Turbine is a Radial Outflow Steam Turbine with two counter rotating discs. Blades are mounted in circles one bigger than the other. Blades of one rotor work as nozzles for the other rotor blades. This turbine design is very forgiving on wet steam. It is said that the turbine design had limitations on scaling up above 30 MW and hence could not compete with Axial Flow Turbines.
What is the difference of an axial flow and centrifugal compressor?
The centrifugal flow compressor has a single or two stage unit using an impeller. The axial flow compressor is a multi-stage unit using alternate rows of rotating (rotor) blades and stationary (stator) vanes.
What causes turbines to spin?
Turbines are designed to spin when a fluid or gas (such as steam, water, or wind) flows over the blades of the turbine. This flow of fluid or gas causes the blades to turn, driving the turbine and generating mechanical energy in the process. This mechanical energy can then be converted into electricity or other forms of power.
How do turbines produce energy?
Turbines don't produce energy. They convert combustion from burning gas or water flow. A turbine is just a device with a lot of blades that convert water flow or gas flow to rotation. This rotation then turns an electrical generator, interfaces with a power take off unit, or provides jet thrust.
What has the author Rodney Loren Bown written?
Rodney Loren Bown has written: 'An investigation of the secondary flow phenomena in a cascade of high-deflection axial-flow impulse turbine blades' -- subject(s): Aeronautics
Where the guide vanes are fixed in steam turbines?
In steam turbines, guide vanes are typically fixed in the turbine's stationary casing or casing sections, located before the rotor blades. Their primary function is to direct the flow of steam towards the rotor blades at the optimal angle, ensuring efficient energy transfer. By maintaining a fixed position, they help stabilize the steam flow and improve the overall performance of the turbine.
Static force analysis on over head fan?
Centrifugal force of the fan results in an increase in static force. The blades of the axial flow fans force air to move parallel to them.
