[OpenFOAM] "Data Range Too Small To Render" Cavity Tutorial

H0T_S0UP · January 31, 2015, 17:15

Hello, I am following the cavity tutorial provided from sourceforge.

I have not run into any problems executing the case in the termal, but when I go to view pressure contours in paraview I get a solid rendering instead of colour gradients representing the pressure. In playing around with the Color Map Editor I see a message stating "Data Range Too Small to Render."

I did not get any obvious error messages when I ran the case, but I will post the terminal i/o. Unfortunately, I am learning this on my own and dont have access to professors (or anyone for that matter) who is experienced with the software. Any help is appreciated

change directory

Code:

=> cd $FOAM_RUN/tutorials/incompressible/icoFoam/cavity

execute the mesh

Code:

=> blockMesh

run the case

Code:

=> icoFoam

output at last iteration

Code:

Time = 0.5

Courant Number mean: 0.222158 max: 0.852134
smoothSolver:  Solving for Ux, Initial residual = 2.32737e-07, Final residual = 2.32737e-07, No Iterations 0
smoothSolver:  Solving for Uy, Initial residual = 5.07002e-07, Final residual = 5.07002e-07, No Iterations 0
DICPCG:  Solving for p, Initial residual = 1.0281e-06, Final residual = 2.77237e-07, No Iterations 1
time step continuity errors : sum local = 4.0374e-09, global = -9.0204e-19, cumulative = -2.44407e-18
DICPCG:  Solving for p, Initial residual = 5.31987e-07, Final residual = 5.31987e-07, No Iterations 0
time step continuity errors : sum local = 6.12557e-09, global = -3.93738e-20, cumulative = -2.48344e-18
ExecutionTime = 0.11 s  ClockTime = 1 s

End

open parafoam

Code:

paraFoam

any idea what is up?

H0T_S0UP · January 31, 2015, 18:31

Ah... Well I figured it out. In Paraview I had the 0th time step selected, which by default would not have any gradients shown. After selecting t=.5 seconds I got the correct rendering

January 31, 2015, 17:15	"Data Range Too Small To Render" Cavity Tutorial	#1
H0T_S0UP Member Alex Join Date: Jan 2014 Posts: 54 Rep Power: 12	Hello, I am following the cavity tutorial provided from sourceforge. I have not run into any problems executing the case in the termal, but when I go to view pressure contours in paraview I get a solid rendering instead of colour gradients representing the pressure. In playing around with the Color Map Editor I see a message stating "Data Range Too Small to Render." I did not get any obvious error messages when I ran the case, but I will post the terminal i/o. Unfortunately, I am learning this on my own and dont have access to professors (or anyone for that matter) who is experienced with the software. Any help is appreciated change directory Code: => cd $FOAM_RUN/tutorials/incompressible/icoFoam/cavity execute the mesh Code: => blockMesh run the case Code: => icoFoam output at last iteration Code: Time = 0.5 Courant Number mean: 0.222158 max: 0.852134 smoothSolver: Solving for Ux, Initial residual = 2.32737e-07, Final residual = 2.32737e-07, No Iterations 0 smoothSolver: Solving for Uy, Initial residual = 5.07002e-07, Final residual = 5.07002e-07, No Iterations 0 DICPCG: Solving for p, Initial residual = 1.0281e-06, Final residual = 2.77237e-07, No Iterations 1 time step continuity errors : sum local = 4.0374e-09, global = -9.0204e-19, cumulative = -2.44407e-18 DICPCG: Solving for p, Initial residual = 5.31987e-07, Final residual = 5.31987e-07, No Iterations 0 time step continuity errors : sum local = 6.12557e-09, global = -3.93738e-20, cumulative = -2.48344e-18 ExecutionTime = 0.11 s ClockTime = 1 s End open parafoam Code: paraFoam any idea what is up?

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January 31, 2015, 18:31		#2
H0T_S0UP Member Alex Join Date: Jan 2014 Posts: 54 Rep Power: 12	Ah... Well I figured it out. In Paraview I had the 0th time step selected, which by default would not have any gradients shown. After selecting t=.5 seconds I got the correct rendering