FLOW OVER CYCLINDER BY INCREASING REYNOLDS NUMBER

I have undergone a challange on flow over the cylinder with different reynolds no

GIVEN:

Create a flow over the cylinder by increasing the reynolds number to 20%,40%,100% and show their VELOCITY AND PRESSURE

Animate the pressure and velocity ,how the flow get passes?

PROCEDURE:

CREATING THE CYLINDER

1.Created a circle to a DIA 0.05m and extruted to the length O.3m

2.Save it as cylinder

FLOW STIMULATION:

INPUT:

*PROJECT:Flow over the cylinder

*Time dependent analysis given timing inlet as 0.1and getting output for every 0.01sec

*Giving my fluid as gas

*Flow done as external

*Giving velocity along x direction as 5m/s

CUTPLOT:Cutting xy plane to see the flow at a distance of 0.09m for velocity and pressure by giving basic mesh

CALCULATING Re:

1.calculated the reynolds number initially with a Vin=5m/s and getting the reynolds number as Re=16995.005m/s

re=(1.225*5*0.05)/(1.802E^-5)=16995.005

VELOCITY AT 5m/s

PRESSURE AT 5PA

CREATING ANIMATION:

*Click animation and click wizard setting

*later giving the timing for the output ie double the input time such as (5m/s=10s,6m/s=12s,7m/s=14s,10m/s=20s)

*click next we are going to see how the pressure and velocity get change so click scenario and click finish

*we could slot the scenario plot at bottom and drag to starting point and click insert control point to insert the v and p

*save and record the animation gets runs.

ANIMATION LINK :(time=10s)

velocity

https://drive.google.com/file/d/1wEkgIlzyXv25UrI9NnOvDDnUxMKte76M/view?usp=sharing

pressure

https://drive.google.com/file/d/1gpA1LueO9tFSiDmxRNzUXozWs6YrFbUD/view?usp=sharing

2.calculating V1 with same reynolds number by[ increasing the REYNOLDS NUMBER by 20% ],

re1 = (16995.005+(16995.005*0.2))=20394.006

V2 = (20394.006*1,802E^-5)/(1.225*0.05)=6m/s

VELOCITY AT 6m/s

PRESSURE PA

ANIMATION:(time=12)

https://drive.google.com/file/d/1bdUicj9eO-UpKhkF_Dspt_ybPyXPGcYY/view?usp=sharing

https://drive.google.com/file/d/11AndJXQO3HX913m5_Xw2y0bkN5o0zwbF/view?usp=sharing

3.Calculating v2:[by increasing Re 40%]

re2 = 16995.005+(16995.005*0.4)=23793.007

v2 =( 23793.007*1.802E^-5)/(1.225*0.05) = 7m/s

VELOCITY AT 7m/s

PRESSURE AT 7PA

ANIMATION:(time=14s)

https://drive.google.com/file/d/1LthCFkp2fNOh2cLEir7tUnXpaJPr-SKE/view?usp=sharing

https://drive.google.com/file/d/1kNi80XSsVGfmvrJs5mdsRDUTSpGgaJSV/view?usp=sharing

3.Calculating the v3 by[ increasing the reynolds number t0 100%]

re3 = 16995.005+(16995.005*1)=33990.01

v3 = (33990.01*1.802E^-5)/(1.225*0.05)=10m/s

VELOCITY AT 10m/s

PRESSURE AT 10PA

ANIMATION:(time=20s)

https://drive.google.com/file/d/1_tNzsX6SAv97AbhJQMa-HzIqL4kZ9WBf/view?usp=sharing

https://drive.google.com/file/d/1XzXfmEzENOGfObMKorwM5y_hchYvncyf/view?usp=sharing

From the above pictureS we could understand the velocity and pressure by increasing the reynolds numbers by 20%,40%,100%

and after seeing this animation video we could understan the step by step how the pressure and velocity get differs.

HERE I LEARNED HOW THE FLOW IS BETWEEN THE INTERNAL AND EXTERNAL FLOW BY VARYING THE VELOCITY WITH DIFFERENT REYNOLDS NUMBERS.

THANKYOU