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December 8, 2010, 08:17 |
hypersonic cfd free code???
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#1 |
Member
Ovidiu Michiu
Join Date: Apr 2010
Location: Munich, Germany
Posts: 53
Rep Power: 16 |
hello forum,
as the title says my question is the following: does anybody know a hypersonic cfd FREE code? best, Ovidiu |
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December 9, 2010, 13:25 |
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#2 |
Senior Member
Nakul
Join Date: Apr 2010
Location: India
Posts: 147
Rep Power: 16 |
Hi,
At present no solver exists for hypersonic flow in OpenFOAM. But you can always make your own. I was thinking of doing it but just couldn't find time. If you want you may begin working on it and I could help. |
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December 10, 2010, 08:45 |
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#3 |
New Member
Nishit Joseph
Join Date: Nov 2010
Posts: 29
Rep Power: 16 |
Well...none part of the official package ... there is one called aeroFoam that may be of interest to you
http://www.aero.polimi.it/freecase/?...namic_problems This post may also be of interest (the above link is taken from here) http://www.cfd-online.com/Forums/ope...-aerofoam.html But I have not tested it (yet!). I am in the process of developing a solver myself. Hypersonic CFD code is a bit too general ... what type of flow conditions are you interested in. |
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December 10, 2010, 13:46 |
density based solver
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#4 |
Member
MSR CHANDRA MURTHY
Join Date: Mar 2009
Posts: 33
Rep Power: 17 |
Hypersonic flows are characterized by strong energy-flow copuling, requiring a coupled solver (density based). Currenly this solver is not avilable in OF. A brief intriduction about this technology is highlighed by Prof. H jasak in the recent opensourcecfd conferece 2010.http://www.opensourcecfd.com/conference2010/proceedings/documents/Session_III/OSCIC2010_Rusche_Jasak.pdf.
alternatively, you can try open source density based code http://www.freecfd.com/ |
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December 16, 2010, 08:44 |
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#5 |
Member
Ovidiu Michiu
Join Date: Apr 2010
Location: Munich, Germany
Posts: 53
Rep Power: 16 |
hello JLight,
I have only the Mach number, which is 10 and the vehicle is flying on the layer of the stratosphere of the Earth. thk for aeroFoam. I have a small problem. Is not working on OF 1.7.0. My supposition is this version doesn´t have this C++ library: Cloud.H and passiveParticle.H best, Ovidiu |
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December 16, 2010, 09:51 |
AeroFoam for OpenFOAM-1.7.x
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#6 |
New Member
Nishit Joseph
Join Date: Nov 2010
Posts: 29
Rep Power: 16 |
hi Ovidiu
OpenFoam does have the library. You need to edit the file in the Make directory. I have uploaded the necessary file in Make.zip That was the easy part , aeroFoam still has many errors . I do not have the time to go through it to figure out the logic and correct the code as of now (assuming i am able too ), but i am open to the possibility in the coming week. Hopefully you will have better luck than me! Cheers! JLight PS: I also uploaded the log file for building AeroFoam to give you an idea of the problems encountered. |
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December 16, 2010, 10:11 |
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#7 |
Member
MSR CHANDRA MURTHY
Join Date: Mar 2009
Posts: 33
Rep Power: 17 |
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December 25, 2010, 10:56 |
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#8 |
New Member
senthilkumar.R
Join Date: Sep 2010
Location: Ranchi, India
Posts: 20
Rep Power: 16 |
Hi JLight,
If u completed updation of AeroFoam for OF 1.6 + , please reply with details.
__________________
Senthil Kumar. R Department of space Engineering and Rocketry, Birla Institute of Technology,Mesra. rock.senthilkumar@gmail.com |
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December 28, 2010, 06:18 |
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#9 | |
Senior Member
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I suggest you to contact Giulio Romanelli and Elisa Serioli at Politecnico di Milano, the authors of aeroFoam, maybe they could help you. The are very kind guys!
Ivan Quote:
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December 28, 2010, 06:43 |
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#10 |
New Member
senthilkumar.R
Join Date: Sep 2010
Location: Ranchi, India
Posts: 20
Rep Power: 16 |
Hi Ivan,
Thank you for your suggestion.Surely I will contact them.
__________________
Senthil Kumar. R Department of space Engineering and Rocketry, Birla Institute of Technology,Mesra. rock.senthilkumar@gmail.com |
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March 19, 2011, 17:42 |
Hypersonic CFD code
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#11 |
New Member
Nishit Joseph
Join Date: Nov 2010
Posts: 29
Rep Power: 16 |
Hi All
Sorry I had gone MIA. I had some personal trouble that are now sorted. Regarding AeroFoam, I did not get a lot of opportunity to fix it. However, in my attempts I was able to remove all the compiling errors ( to the best I knew was right) by updating the codes. But I am not sure of a certain section which is the connectivity . In the file "CreateConnectivity.C" @ about line 110 Code:
forAll( mesh.boundaryMesh(), iPatch ) { forAll( mesh.boundaryMesh()[iPatch].faceAreas(), ii ) { // Input id_L = mesh.boundaryMesh()[iPatch].faceCells()[ii]; i = mag(mesh.boundaryMesh()[iPatch].whichFace(id_L)); // *** ADAPTIVE VERSION *** ( works better with quad/hexa cells ) if ( adaptiveConnectivitySearch == 1 ) More importantly I am not sure what the Authors are trying to do here so I was not sure if it needs 'fixing'. This however is not reason I get runtime errors! The problem arises in the file "BuldFluxes.C" @ the lines about 57 Code:
forAll( mesh->Sf(), i ) { // Input id_L = (*mesh).faceOwner()[i]; id_R = (*mesh).faceNeighbour()[i]; Also I would appreciated if someone tried this on a give known working example. I have not done this, may be the results may be different! Any help will be appreciated. The files are located here http://sourceforge.net/projects/aerofoam/ Nishit |
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June 17, 2011, 04:42 |
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#12 |
New Member
TCH
Join Date: Jul 2010
Location: Beijing City
Posts: 15
Rep Power: 16 |
JLight, thanks for you major contribution about the correction and update the AeroFoam 1.7.1 version, I tried some cases in the aeroFoam 1.7.1 and I feel that, the code in CreateConeectivity.C line 110 should be changed form
i = mag(mesh.boundaryMesh()[iPatch].whichFace(id_L)); into i = mag(mesh.boundaryMesh()[iPatch].start() + ii); during running the case of OneraM6 and YF-17, the storage of connectivity file routing should be changed from ./Data ./Log to ../Data ../Log further feedback about this post is welcome. :-] |
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January 18, 2012, 09:16 |
AeroFoam 1.7.1
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#13 |
Member
Join Date: Nov 2011
Posts: 32
Rep Power: 15 |
Hi.
I have downloaded AeroFoam 1.7.1 from http://sourceforge.net/projects/aerofoam/ and has compiled it.Errors at compilation was not found, but when I have begun test AeroFoam on an example OneraM6,ObliqueShock it doesn't work and gives out the following error: for ObliqueShock log .o file: Code:
Create time Create mesh for time = 0 // using new solver syntax: cellDisplacement { solver PCG; preconditioner DIC; tolerance 1e-08; relTol 0; } ======================================== Reading Thermodynamic Properties... ======================================== gamma [-] = 1.4 Pr [-] = 0.72 R [J/KgK] = 287.05 Cp [J/KgK] = 717.625 Cv [J/KgK] = 1004.67 ---------------------------------------- ======================================== Reading Initial Conditions... ======================================== Reading field p Reading field T Reading field U This is a start 10 % 19 % This is a start 10 % 19 % 29 % This is a start 10 % 19 % 29 % This is a start 10 % 19 % 29 % This is a start 10 % 19 % 29 % This is a start 9 % 19 % 28 % This is a start 9 % 19 % 28 % ---------------------------------------- Creating conservative variables at t^(k) Creating conservative variables at t^(k-1) Creating conservative variables at t^(k-2) Creating conservative variables fluxes at t^(k) Creating primitive variables gradient fields (optional) ---------------------------------------- ======================================== Creating Mesh Connectivity... ======================================== Using adaptive algorithm... id_LL_i216SIZE84Loop on Internal Faces... i=0i=1i=2i=3i=4i=5i=6i=7 10 % i=8i=9i=10i=11i=12i=13i=14i=15 19 % 29 % 39 % 48 % 58 % 67 % 77 % 87 % 96 % 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 99 % 38 % 47 % 56 % 66 % 75 % 85 % 94 % 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 99 % i=16i=17i=18i=19i=20i=21i=22i=23 29 % i=24i=25i=26i=27i=28i=29i=30i=31 38 % i=32i=33i=34i=35i=36i=37i=38i=39 48 % i=40i=41i=42i=43i=44i=45i=46i=47 57 % i=48i=49i=50i=51i=52i=53i=54i=55 67 % i=56i=57i=58i=59i=60i=61i=62i=63 76 % i=64i=65i=66i=67i=68i=69i=70i=71 86 % i=72i=73i=74i=75i=76i=77i=78i=79 95 % i=80i=81i=82i=83---------------------------------------- Loop on Boundary Faces... 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 98 % ---------------------------------------- ======================================== Mesh 39 % 48 % 58 % 67 % 77 % 87 % 96 % 9 % 18 % 28 % 37 % 46 % 56 % 65 % 75 % 84 % 94 % 38 % 48 % 57 % 67 % 76 % 86 % 95 % 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 98 % 38 % 48 % 57 % 67 % 76 % 86 % 95 % 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 98 % 38 % 48 % 57 % 67 % 76 % 86 % 95 % 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 98 % 38 % 47 % 56 % 66 % 75 % 85 % 94 % 9 % 19 % 29 % 39 % 49 % 59 % 69 % 79 % 89 % 99 % ======================================== # of Faces = 84 # of Cells = 50 # of BndPatch = 8 0) supersonicInlet @ inlet 1) extrapolatedOutlet @ outlet 2) symmetryPlane @ bottom 3) supersonicInlet @ top 4) empty @ defaultFaces 5) @ procBoundary0to1 6) @ procBoundary0to2 7) @ procBoundary0to3 ---------------------------------------- ======================================== Numerical Scheme ======================================== flowType = Euler timeScheme = RK2 CourantMax = 0 CourantSteps = 25 MonotoneFlux = Roe HighResFlux = LW fluxLimiter = VL entropyFix = HH2 extrapolateBC = 1 residualNorm = L1 minResidual = -1 ---------------------------------------- Does everything look fine? [y] to continue [n] otherwise Starting time loop... SIZE84blf fx i=0 blf fx i=1 ........... blf fx i=83 (Foam::error:rintStack) For other cases there are same problems. Thanks. |
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January 18, 2012, 09:44 |
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#14 |
New Member
TCH
Join Date: Jul 2010
Location: Beijing City
Posts: 15
Rep Power: 16 |
Actually I have poured a lot of time on aeroFoam for promote more time integration feature for the code but I could not manage to build more feasible and robust flux schemes on high mach number backward facing step (strong expansion wave problems), I am willing to offer my code but I don't know how. And I would like to provoke some others on proceeding the more powerful aerofoam features. Any body interested of sharing my code?
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January 18, 2012, 09:53 |
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#15 |
Member
Join Date: Nov 2011
Posts: 32
Rep Power: 15 |
I am interested. what its difference from code Aerofoam, i don't understand? What version openfoam it is constructed? Whether you know how to rectify my error?
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January 18, 2012, 10:06 |
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#16 |
New Member
TCH
Join Date: Jul 2010
Location: Beijing City
Posts: 15
Rep Power: 16 |
On what version the code was constructed didn't matter, I am just using the code on openfoam 2.0 and it is working well. Questions:
1 - What test case are you just running? 2 - Have you ever tried other test cases aerofoam? 3 - you should first locate where is the "blf fx i=1 ........... blf fx i=83" instructions, it looks strange for me and it does not appear to be right for me. could you please let me know where you locate the "blf fx i = xxx" instructions. :-] |
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January 18, 2012, 10:26 |
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#17 |
Member
Join Date: Nov 2011
Posts: 32
Rep Power: 15 |
I tested Aerofoam on obliqueshock case.I don't know how this solver worked,and don't know that means "blf fx i=1" in the log.
I work over a problem stream injection in vacuum. Start Mach numder > 3..4, at present I use rhoCentralFoam on OpenFOAM v2.0.1,heard that aerofoam gives out very good results, and i wanted to compare it. |
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January 18, 2012, 11:07 |
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#18 |
New Member
TCH
Join Date: Jul 2010
Location: Beijing City
Posts: 15
Rep Power: 16 |
please leave your email address and I will send you a copy of the code if I've got the time. Currently, I am not on my working post. I guess you need to wait for quite a while. I will get you informed. :-]
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May 31, 2013, 09:49 |
Aerofoam
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#19 |
Senior Member
Nishant
Join Date: Mar 2009
Location: Glasgow, UK
Posts: 166
Rep Power: 17 |
Hi Solarbiden,
I would be interested in helping to debug the case. I have previously done some development on openfoam. However I am new to Aerofoam and I was attracted towards it for its applicability in supersonic cases. I was also wondering if it can be used in aeroelastic applications? My email is nishant.nitj@gmail.com for any communication. Thanks and regards, Nishant
__________________
Thanks and regards, Nishant |
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