SIMULATION of JOURNAL BEARING with FSI by using ANSYS 19.5

From the previous Video, I had given tutorial about simulating Journal Bearing without FSI (Rigid Body). Now is the continuation of the previous video.
I hope this video will help you, and THANKS :D

[@simulationmaster1467]

note: for the dynamic mesh, you should input the fluid (volume domain ) to deforming. Thank you. And dont forget to input gravity!

[@padangwulan9306]

Yup, already. Tq.

[@AETHERscience]

Hi ! Can you please clarify: which should be put to deforming: "fluid" or "interior-fluid" from the drop-down list in the Dynamic mesh zone names? Thank you !

[@ranavishwajeet4155]

@@padangwulan9306 could you please share the model of it. [e-mail] Thanks!

[@dineshdhande2373]

Do you have any course for dynamic analysis of journal bearing to determine damping coefficients and stiffness using ANSYS?

[@EAZYSOLUTIONS]

"Update failed for the Solution component in System Coupling. The coupled update for system Transient Structural threw an exception. Mechanical Units preferences have caused a problem. Before attempting to solve System Coupling again, edit the Mechanical Setup cell and set Analysis Settings > Analysis Data Management > Solver Units = Manual. This change will ensure units are communicated correctly between Mechanical and System Coupling and will avoid a dependency on the preferences set for the Mechanical Units" This error is showing

[@rostombenaoumeur9079]

"I completed all the steps, and the simulation is finished. However, I'm unsure how to visualize the results. Could you please explain how to do it?

[@harishkamath4789]

Hi Thank you for the informative video. Helping me a lot. one basic question: why dynamic mesh is necessary in this case. if we give a "moving wall" as a boundary condition is that not sufficient to rotate the fluid domain. & under the moving wall, "motion" should be "absolute" right ? why "relative to adjacent cell zone" is taken also, Can you do a CFD analysis of partial arc bearing and upload it to youtube.

[@simulationmaster1467]

1. From what i know, in here dynamic mesh is to simulate the reaction of deformation of the structural domain. 2. my knowledge to dynamic mesh still limited, so basically i just ran out the default. 3. i cant do CFD analysis of partial arc bearing. Thank you!!

[@harishkamath4789]

Hi, Waiting for the FSI analysis on partial arc bearing. Thank you in advance

[@jaiprakashsharma8587]

@simulation master, how can we plot the graph between theta and pressure. i am facing difficulty in creating in CFD post.

[@simulationmaster1467]

Make a line using CFD post, around outer bearing, make graph, extract graph data to excel.

[@potato6100]

Plz, what do you mean, note: for the dynamic mesh, you should input the fluid (volume domain ) to deforming. I didn't show used fluid domain only the wall static and moving, and there is attitude angle or the coupling will calculated it

[@potato6100]

@simulation master plz, can you answer me

[@simulationmaster1467]

@@potato6100 it means when you added system coupling at fluent dynamic mesh, you should input your fluid volume domain to deforming and click create.

[@potato6100]

@@simulationmaster1467 Many thanks for your answer Plz, you mean input it in the setting of the smoothing or no Also, I have another answer gravity mustn't activated this effect if activated or not Thanks again

[@simulationmaster1467]

@@potato6100 1. yes i checklist smoothing setting 2. yes the gravity, how can i forget about that, yes you should input gravity.

[@potato6100]

@@simulationmaster1467 many thanks

[@engineermindtv7293]

Hi! Great Tutorial and Video! How I see, the New Ansys Meshing Interface is closer to modern soft, In 2019 R1 its very old. So, if i simulate only Fluid flow bearing can i use not static domain, but rotating surface in transient case or not?

[@simulationmaster1467]

yup, you can do it, if what you mean is simulate journal bearing with transient FLUENT.

[@keisyleechiernercontreraso8327]

Hello, what is the diameter of the shaft and when is the internal diameter of the bearing?

[@miladdarzi2027]

Thanks for the demo. What is the scale of your geometry (i.e. inner, and outer diameter, and fluid film thickness)?

[@simulationmaster1467]

kzbin.info/www/bejne/m6mqmHiLZtmhmbs

[@simulationmaster1467]

here, as I remember, I use this parameter in the video. Hope it help you.

[@dhrubajyotichakraborty4198]

Hi, how did you got that shaft fluid and body three separate surfaces in geometry?

[@jitendranarayanpanda779]

Hi. Can you please send me the whole project file? Thank you

[@simulationmaster1467]

im sorry i cant, but i believee you can do it by wathcing the video

[@padangwulan9306]

Hello, I want to ask, does the end time simulate the real rotation that occur in journal bearing?

[@simulationmaster1467]

hmmm i kinda dont understand your question but here: if you give 1000 rpm, at the end time it will be 1000 rpm. its not decreasing to 0 or else.

[@padangwulan9306]

@@simulationmaster1467 owgh, I see. What if I want to get the eccentricity of the shaft on 1000 rpm?

[@simulationmaster1467]

@@padangwulan9306 you should input the eccentricity while you are meking the 3d design

[@padangwulan9306]

@@simulationmaster1467 thank you

[@padangwulan9306]

Another question: when doing the transient setup, does the automatic connection are all suppressed?

[@fahadaslam2011]

Hello, can you please share with me the geometry file only !?

[@simulationmaster1467]

kzbin.info/www/bejne/m6mqmHiLZtmhmbs

[@simulationmaster1467]

Here I show you how I made it, eventhough it may not have same parameter :/

[@vatsaltrivedi3848]

can you just make a video to make a geometry file or just sand a STEP file of geometry

[@simulationmaster1467]

kzbin.info/www/bejne/m6mqmHiLZtmhmbs

[@simulationmaster1467]

here I made it eventually, but it may have different parameter, I couldnt remember which parameter I used for simulation video. Thank you.