|
[Sponsors] |
February 1, 2019, 13:56 |
Motorboat sinkage/trim and resistance
|
#1 |
New Member
Join Date: Jan 2019
Posts: 1
Rep Power: 0 |
Hi everyone ,
i am new to OpenFoam. I am trying to calculate the trim angle/sinkage and resistance of a motor boat as a first step. My final calculation should include a propulsion of the motor boat interacting on the trim angle and sinkage. As a Beginner I first took a look at the DTCHullMoving tutorial (OpenFoam 6), to check and get some experience on how this is working. After that I included my Mesh from Ansys containing my hull and boundaries. Unfortunately I am getting errors (I am guessing because of the sixDoFRigidBodyMotion) but I can't figure out how to solve it. I would be very thankful if somebody could help me out here Here is the log.interFoam file: *---------------------------------------------------------------------------*\ ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | Website: https://openfoam.org \\ / A nd | Version: 6 \\/ M anipulation | \*---------------------------------------------------------------------------*/ Build : 6-6257b17a4cf8 Exec : interFoam -parallel Date : Feb 01 2019 Time : 19:25:57 Host : "adrian" PID : 14894 I/O : uncollated Case : /home/adrian/OpenFOAM/adrian-6/run/TFB nProcs : 8 Slaves : 7 ( "adrian.14895" "adrian.14896" "adrian.14897" "adrian.14898" "adrian.14899" "adrian.14900" "adrian.14901" ) Pstream initialized with: floatTransfer : 0 nProcsSimpleSum : 0 commsType : nonBlocking polling iterations : 0 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10) allowSystemOperations : Allowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create mesh for time = 0 Selecting dynamicFvMesh dynamicMotionSolverFvMesh Selecting motion solver: rigidBodyMotion Selecting rigidBodySolver Newmark PIMPLE: No convergence criteria found PIMPLE: No corrector convergence criteria found Calclations will do 3 corrections Reading field p_rgh Reading field U Reading/calculating face flux field phi Reading transportProperties Selecting incompressible transport model Newtonian Selecting incompressible transport model Newtonian Selecting turbulence model type RAS Selecting RAS turbulence model kOmegaSST Selecting patchDistMethod meshWave RAS { RASModel kOmegaSST; turbulence on; printCoeffs on; alphaK1 0.85; alphaK2 1; alphaOmega1 0.5; alphaOmega2 0.856; gamma1 0.555556; gamma2 0.44; beta1 0.075; beta2 0.0828; betaStar 0.09; a1 0.31; b1 1; c1 10; F3 false; } Reading g Reading hRef Calculating field g.h No MRF models present No finite volume options present GAMG: Solving for pcorr, Initial residual = 1, Final residual = 0.000434825, No Iterations 10 time step continuity errors : sum local = 8.47695e-10, global = 1.0359e-10, cumulative = 1.0359e-10 Constructing face velocity Uf Courant Number mean: 0.0105543 max: 5.1944 forces forces: Not including porosity effects Starting time loop Courant Number mean: 0.0105543 max: 5.1944 Interface Courant Number mean: 0 max: 0 deltaT = 0.0011999 Time = 0.0011999 PIMPLE: Iteration 1 forces forces: Not including porosity effects [0] #0 Foam::error:rintStack(Foam::Ostream&) at ??:? [0] #1 Foam::sigFpe::sigHandler(int) at ??:? [0] #2 ? in "/lib/x86_64-linux-gnu/libc.so.6" [0] #3 Foam::RBD::rigidBodyModel::forwardDynamics(Foam::R BD::rigidBodyModelState&, Foam::Field<double> const&, Foam::Field<Foam::SpatialVector<double> > const&) const at ??:? [0] #4 Foam::RBD::rigidBodyMotion::forwardDynamics(Foam:: RBD::rigidBodyModelState&, Foam::Field<double> const&, Foam::Field<Foam::SpatialVector<double> > const&) const at ??:? [0] #5 Foam::RBD::rigidBodySolvers::Newmark::solve(Foam:: Field<double> const&, Foam::Field<Foam::SpatialVector<double> > const&) at ??:? [0] #6 Foam::RBD::rigidBodyMotion::solve(double, double, Foam::Field<double> const&, Foam::Field<Foam::SpatialVector<double> > const&) at ??:? [0] #7 Foam::rigidBodyMeshMotion::solve() at ??:? [0] #8 Foam::motionSolver::newPoints() at ??:? [0] #9 Foam::dynamicMotionSolverFvMesh::update() at ??:? [0] #10 ? in "/opt/openfoam6/platforms/linux64GccDPInt32Opt/bin/interFoam" [0] #11 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" [0] #12 ?[adrian:14894] *** Process received signal *** in "/opt/openfoam6/platforms/linux64GccDPInt32Opt/bin/interFoam" [adrian:14894] Signal: Floating point exception (8) [adrian:14894] Signal code: (-6) [adrian:14894] Failing at address: 0x3e800003a2e [adrian:14894] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f92aa288f20] [adrian:14894] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f92aa288e97] [adrian:14894] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f92aa288f20] [adrian:14894] [ 3] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/librigidBodyDynamics.so(_ZNK4Foam3RBD14rigidBodyMo del15forwardDynamicsERNS0_19rigidBodyModelStateERK NS_5FieldIdEERKNS4_INS_13SpatialVectorIdEEEE+0x169 8)[0x7f92857f09b8] [adrian:14894] [ 4] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/librigidBodyDynamics.so(_ZNK4Foam3RBD15rigidBodyMo tion15forwardDynamicsERNS0_19rigidBodyModelStateER KNS_5FieldIdEERKNS4_INS_13SpatialVectorIdEEEE+0x5e )[0x7f9285800b0e] [adrian:14894] [ 5] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/librigidBodyDynamics.so(_ZN4Foam3RBD16rigidBodySol vers7Newmark5solveERKNS_5FieldIdEERKNS3_INS_13Spat ialVectorIdEEEE+0x91)[0x7f9285807961] [adrian:14894] [ 6] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/librigidBodyDynamics.so(_ZN4Foam3RBD15rigidBodyMot ion5solveEddRKNS_5FieldIdEERKNS2_INS_13SpatialVect orIdEEEE+0xf0)[0x7f92857fe5b0] [adrian:14894] [ 7] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/librigidBodyMeshMotion.so(_ZN4Foam19rigidBodyMeshM otion5solveEv+0x971)[0x7f9285a3b301] [adrian:14894] [ 8] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libdynamicMesh.so(_ZN4Foam12motionSolver9newPoints Ev+0x28)[0x7f92a903fae8] [adrian:14894] [ 9] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libdynamicFvMesh.so(_ZN4Foam25dynamicMotionSolverF vMesh6updateEv+0x3e)[0x7f92aced5e7e] [adrian:14894] [10] interFoam(+0x49134)[0x555a2d6da134] [adrian:14894] [11] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f92aa26bb97] [adrian:14894] [12] interFoam(+0x53a9a)[0x555a2d6e4a9a] [adrian:14894] *** End of error message *** -------------------------------------------------------------------------- mpirun noticed that process rank 0 with PID 0 on node adrian exited on signal 8 (Floating point exception). -------------------------------------------------------------------------- |
|
December 2, 2019, 07:22 |
|
#2 |
New Member
Join Date: Oct 2019
Posts: 13
Rep Power: 7 |
AdrianM,
I m facing the same issue, Did you get any solution to this? Pls help. Thanks in advance. |
|
Tags |
dtchull tutorial, sixdofrigidbodymotion |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Inertial resistance term in Fluent | star | FLUENT | 1 | April 3, 2019 04:56 |
Inertial Resistance and Viscous Resistance Data | ravitejakatragadda | FLUENT | 5 | May 10, 2018 04:16 |
Viscous resistance and Pressure resistance | PeiSan | Fidelity CFD | 2 | September 22, 2014 03:35 |
Ship resistance | tobino | FLUENT | 0 | June 27, 2011 20:31 |
adapt viscous resistance based on velocity / UDF | Häwimeddel | FLUENT | 2 | April 20, 2009 10:08 |