Hi, I got an error, The ANSYS CFX solver exited with return code 1, not result has been saved. Do you know why? BTW, I just did this simulation step by step following your video.
Hi Lucas, difficult to tell without knowing the error. "ANSYS CFX solver exited with return code 1" does not tell anything. Check the out file for more information.
Yes you can by changing only the angle of the spacecraft around its local axis. Of course you will have to remesh it before running the simulations again.
I used keyframe animation in CFD-Post for creating the animation. I will try to upload a tutorial on this on FetchCFD in coming days detailing the steps.
Mr. atif masood, thank you so much for making a video on re entry vehicle simulation. it helped me a lot. i have a request that can you please make the same tutorial ( re entry vehicle ) with HYPERSONIC flow conditions in ANSYS CFX with mach number more than 15 at least? Please, there are not much source for hypersonic flow simulations.
HI, Im trying to follow the tutorial, but when I try to upload the mesh its an error on it. : ERROR There was a problem importing the mesh from the requested file. The importing process reported the following problem: Unable to import mesh: Premature end of file found when reading header. Could you please help me?
@@atifmasood682 Yes, Im running on the Student version 2019 R1, but I addjust some details in the patch for the mesh and now it's running. Thank you so much for your files and the video-tutorial. Best wishes from Mexico City
I chose actually RNG model which is a modified version of k-epsilon model. Reason for that is it is believed to be a good compromise between performance and computer resources.
@@joewatkins1667 It is a two equation model similar to SST, yes as shown in this video it is available on ANSYS. You can find more information on RNG model here: www.cfd-online.com/Wiki/RNG_k-epsilon_model
will you please help me in simulation of leakage flow due to pressure difference brtween two parallel plates, where one plate is stationary and other one is moving with DYNAMIC MESHING..PLEASE
I did it in steady condition (2D)..where both upper and lower plate were kept stationary...plate length 1mm, gap between them 0.03mm (like rectangle of 1mm by 0.03mm)...oil was taken as working fluid, on both side of 1mm length there was pressure difference...and at last i got leakage mass flow rate.....now I need to do same with dynamic or moving meshing, because my lower plate is moving now (2D)
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Can you make a video on design of the model as well, like from the start?
Noo
no
do you know how to give altitude to this re-entry vehicle on fluent/cfx?
Can you work on the same case for high altitude like 80km with ambient pressure value ~1 pascal
Hi, I got an error, The ANSYS CFX solver exited with return code 1, not result has been saved. Do you know why? BTW, I just did this simulation step by step following your video.
Hi Lucas, difficult to tell without knowing the error. "ANSYS CFX solver exited with return code 1" does not tell anything. Check the out file for more information.
Hi Atif I get the same error can you please explain why?
I believe I have the student version and the mesh nodes are to high to run the case. Can you explain how I can reduce the number of mesh node
Sir can we get the designing process of it.
great work. can you help me simulate the multilayer insulation used in the reentery vehicles
no
Can we change the re-entry angle of the spacecraft? If so, please explain how.
Yes you can by changing only the angle of the spacecraft around its local axis. Of course you will have to remesh it before running the simulations again.
Why did you input the relative pressure 0 Pa? maybe it has to be the atmospheric pressure 1 atm.
Hi, in CFX relative static pressure 0 means it is 1 atm atmospheric pressure .
hello, i have a question how you make an envelope around your space vehicle,... thanks
Hi Kartik, sorry I didn't get your question. Could you elaborate?
@@atifmasood682 maybe he wanted to know how to make an enclosure
Can you tell me what steps you took for creating animation you show at the starting of the video
I used keyframe animation in CFD-Post for creating the animation. I will try to upload a tutorial on this on FetchCFD in coming days detailing the steps.
Mr. atif masood, thank you so much for making a video on re entry vehicle simulation. it helped me a lot. i have a request that can you please make the same tutorial ( re entry vehicle ) with HYPERSONIC flow conditions in ANSYS CFX with mach number more than 15 at least? Please, there are not much source for hypersonic flow simulations.
Hi Manoj, Glad to know that it helped you. I will give it a try.
HI, Im trying to follow the tutorial, but when I try to upload the mesh its an error on it. :
ERROR
There was a problem importing the mesh from the requested file.
The importing process reported the following problem:
Unable to import mesh: Premature end of file found when reading header.
Could you please help me?
Hi, are you using ansys CFX student license to run this simulation? What version of CFX are you using?
@@atifmasood682 Yes, Im running on the Student version 2019 R1, but I addjust some details in the patch for the mesh and now it's running. Thank you so much for your files and the video-tutorial. Best wishes from Mexico City
@@yairisraelpinalopezofficia2707 You are welcome, Glad to know that it is working.
@@yairisraelpinalopezofficia2707 how did you do that?
@@atifmasood682 or maybe yourself?
why did you choose K-epsilon turbulence model?
I chose actually RNG model which is a modified version of k-epsilon model. Reason for that is it is believed to be a good compromise between performance and computer resources.
@@atifmasood682 Ah okay, what is RNG? is it similar to SST and available on ANSYS?
@@joewatkins1667 It is a two equation model similar to SST, yes as shown in this video it is available on ANSYS. You can find more information on RNG model here: www.cfd-online.com/Wiki/RNG_k-epsilon_model
will you please help me in simulation of leakage flow due to pressure difference brtween two parallel plates, where one plate is stationary and other one is moving with DYNAMIC MESHING..PLEASE
I can give it a try. Can you share what you have so far may be on FetchCFD (fetchcfd.com/) and I will have a look at it.
I did it in steady condition (2D)..where both upper and lower plate were kept stationary...plate length 1mm, gap between them 0.03mm (like rectangle of 1mm by 0.03mm)...oil was taken as working fluid, on both side of 1mm length there was pressure difference...and at last i got leakage mass flow rate.....now I need to do same with dynamic or moving meshing, because my lower plate is moving now (2D)
In order to help you out I need your geometry/def files.
YES sure, will you please provide your mail id...
You can create a new project on FetchCFD and share the link with me. I will then try to modify it to solve your problem.
hi, what software did you use to design the re-entry vehicle?
Hi Ann, the original design was created using CatiaV5 by Sachin Gupta. You can find information here: fetchcfd.com/view-project/809
can you simulate the launch of a pslv
500 m/s^-1 reentry speed??
have you validated it? by any chance do you have some wind turbine data?
No i haven't. I don't but you can search/ask on FetchCFD. e.g. this wind turbine project might be interesting for you: fetchcfd.com/view-project/697
The links are not working. Can you please upload the new ones?? Thanks :)
They are working now. I have just checked.
Yes they are working now. Thanks a lot :) keep up the good work..
Why do you have negative pressure?
because it's relative value
CAN U PLOT VELOCITY CHART?
VERY GOOD AND SIMPLE PRESENTATION BUT VOICE IS REQUIRED
Thank you very much. I will try to add voice in future videos.