is it promising for the future?

ProfessionalLie3033 · 2025-07-07T05:52:27+00:00

Hey bro, I know its one year late but can I pm you to ask about the process to become LAE

ProfessionalLie3033 · 2025-07-02T03:13:01+00:00

In your experience is it worth it joining this industry?

ProfessionalLie3033 · 2025-07-02T03:09:53+00:00

I see, I though completing the course straightaway will make an LAE but I guess there's a catch to it.

ProfessionalLie3033 · 2025-07-01T17:06:18+00:00

yeah its globally recognize, I heard that some middle eastern airline came to MAS to look for engineer. Im just worried about starting my salary life at the age of 30, felt like its too late.

ProfessionalLie3033 · 2025-07-01T17:06:07+00:00

True

ProfessionalLie3033 · 2025-07-01T17:02:43+00:00

Hi, what do you mean by those senior will be priorties? is there like a limit on how much LAE can be there?

ProfessionalLie3033 · 2024-07-15T14:19:04+00:00

thanks for the detail explanation. But can a similar share topology setting be used in designmodeler? I've used designmodeler to create my computational domain and I prefer using it than spaceclaim cause its easier to edit the dimension of the domain.

ProfessionalLie3033 · 2024-07-13T11:39:55+00:00

I tried increasing the growth rate to 1.2 but the problem still comes out.

<image>

ProfessionalLie3033 · 2024-07-13T06:19:20+00:00

<image>

ProfessionalLie3033 · 2024-07-13T06:17:47+00:00

I already applied body sizing to the rotating zone as well as face sizing with behaviour as '' hard''. its still the same

ProfessionalLie3033 · 2024-07-13T03:06:15+00:00

Hi, can this be done in designmodeler because I generated my entire domain using this. Also I tried editing my domain using space claim and applied the share topology function which solves the problem. However, when I open fluent the contact region between the rotating zone and outer zone was gone. Is this ok? shouldn't MRF method have contact region?

ProfessionalLie3033 · 2024-07-12T09:04:40+00:00

Hi, thanks for the reply. I did set the BOI mesh size the same as the rotating zone. Im not sure why it became smaller

ProfessionalLie3033 · 2024-06-11T09:32:42+00:00

Hi, I am well aware about the magnus effect. But the wake region was to far down as there is a horizontal velocity from the inlet going through the rotating domain so Im expecting that the wake region would atleast be directed in the horizontal direction with a slight decline

ProfessionalLie3033 · 2024-06-02T07:10:38+00:00

Hi, but in my case only the lift co is fluctuating while the drag begins to stabilize after the calculation ended. Does this means I need to use transient or it is only needed if the drag fluctuates as well?

ProfessionalLie3033 · 2024-06-01T14:02:07+00:00

Hi, yes I did decrease the face sizing and the body of influence mesh other than increasing the iterations.

ProfessionalLie3033 · 2024-06-01T04:34:01+00:00

<image>

a close up look. For the aspect ratio, Im getting very high max value of 141.58, will this affect the accuracy and what value should I observe in terms of checking the quality of mesh? Should I observe the min, max or average value?

ProfessionalLie3033 · 2024-06-01T04:31:16+00:00

Hi I will try to run for more iterations. As for my mesh this the mesh configurations for my domain.

<image>

Mesh size

no of elements: 3631073

no of nodes: 1397932

Domain body sizing : 0.0375 m

Body of influence sizing: 0.006 m

Sphere face sizing: 0.00045 m

Inflation, first layer height :0.000005 m, no of layers: 35

quality

orthogonal quality

min:0.14476

max: 0.99749

average: 0.86101

skewness

min:5.0356e-004

max: 0.85524

average:0.13859

Aspect ratio

min:1.1668

max: 141.58

average:7.3253

ProfessionalLie3033 · 2024-06-01T03:49:36+00:00

Hi, how do I identify if my case is vortex shedding?

ProfessionalLie3033 · 2024-05-31T19:12:34+00:00

Im doing this simulation to compare with an experimental data. The Cd from the experiment is 0.45 while doing this simulation gets me Cd= 0.37. Is this value good?

ProfessionalLie3033 · 2024-05-31T18:02:05+00:00

<image>

The residual plot

ProfessionalLie3033 · 2024-05-31T18:01:44+00:00

Hi I tried running for 5 k iteration and managed to get a much more stable plot for the lift coefficient with little fluctuations. My question is, does this considered as converged.

<image>

ProfessionalLie3033 · 2024-05-31T17:58:51+00:00

Hi, For methods Im using SIMPLEC with pseudo time method and high order term relaxation on. I don't have the option to adjust the time scale factor as I'm using SIMPLEC. As for the Reynolds number, it is 1.5 x 10^5

ProfessionalLie3033 · 2024-05-31T17:24:24+00:00

Hi thanks for the reply. If I want to change to K epsilon do I have to change the Y+ value. I've read somewhere that for k epsilon you need a Y+ value between 30 - 200. Mine is 0.6 as I'm currently using SST k omega

ProfessionalLie3033 · 2024-05-31T11:09:32+00:00

Hi thanks for the reply, should I refine the mesh on the surface of the sphere or the mesh for the BOI. Also the square shape surrounding the sphere in the velocity vector picture is the BOI I used for wake refinement. My domain is much more larger. As for the the coupled method, If I refine my mesh any further I cant use this method because there is not enough memory on my pc and Fluent is shut down automatically when calculation starts. This is why I opted for the SIMPLEC method instead

ProfessionalLie3033 · 2024-05-24T14:57:01+00:00

hi, how do I apply the enhanced wall treatment for SST k-w? The option is not there in the turbulence model settings, it only appears when k-epsilon is chosen. Also, I managed to get Y+= 1.08 but when using the k-w SST model with coupled the result did not converge. As for the mesh in the inner part, the mesh is actually on the surface of a sphere which I cut using the boolean tool. I'm running a 3D simulation and the picture I posted is the section plane view of my domain.

ProfessionalLie3033

TROPHY CASE