what is the principale of vortex flow meter.
Answer Posted / goldengineer14
The principle of a vortex flowmeter’s operation is based on a phenomenon of vortex shedding
known as the Von Karman effect of flow across a bluff body. A bridge pier in a river generates
Von Karman vortices. The principle states that flow alternately sheds vortices from one side to
the other side of a bluff body. The frequency of the shedding is directly proportional to fluid
velocity across the body. As a fluid passes the bluff body it separates and generates small eddies
or vortices that are shed alternately along and behind each side of the bluff body.
The output of the vortex flowmeters depends on the K-factor. The K-factor relates the frequency
of generated vortices to the fluid velocity. The K-factor varies with the Reynolds number, but is
virtually constant over a broad flow range. Figure 71 shows the relationship between two
numbers. The formula for fluid velocity is
Fluid velocity =Vortex frequency/K - factor
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration So is there any causes biside this or any permissives ?
is there any digitel grevity meter availaible in the market by which we can measure specific gravity of a battery?
what is function of SCADA , and how is it work, explain with difination
in natural gas indirect water bath heater,how to prevent the problem of backfire from firetube during ignition...becoz of this backfire performance of wbh is going low.
What is the use of temprature compensation?
describe flow nozzel principle?
OBJECTIVE TYPE QUESTIONS OF ANALYTICAL INSTRUMENTATION
What is the difference bitween control net scaner and device net scaner
Explain PID controller tuning & any one method used for it.
all types of liquid analyzer principle with drawing?
what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?
can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know
Punj lloyd is coming in our Jadavpur Universtiy campus for campus placement. Please send me some hints about the writtend exam. My email id is subratafriends@gmail.com
What is the purpose of bypass valve across AS valve.
1. what is modbus cable? 2. what kind of communication we are using for the interface of DCS, ESD and Third party cabinets? 3. What is serial communication and peer to peer communication?