Hi, I want ti use particle_input.dat to define the location of particles in a reaction system to do a test. However, when I run this model, some error appears, like this
0605.mfx (82.3 KB)
NiOparticle_input.dat (2.1 KB)
usr_rates_des.f (5.9 KB)
0605.mfx (82.3 KB)
NiOparticle_input.dat (2.1 KB)
usr_rates_des.f (5.9 KB)
You either need to give a uniform value that applies to every particles or provide a value for each particles.
If I refer to the header in your file:
Coordinates: T Must always be T
Phase_ID: F 1
Diameter: T 8.0E-05
Density: F 3731.0
Velocity: F 0.0 0.0 0.0
Temperature: T (Ignored if energy eq. is not solved)
Species: T (Ignored if species eq. are not solved)
User_Scalar: T (Ignored if no user scalars are defined)
You need 8 columns of data when you only defined 4:
Column 1-3 : x,y,z coordinates
Column 4: Diameter
Column 5: Temperature (you are solving the energy equation)
Column 6-7: species mass fractions (you have 2 solids species)
Column 8: User scalar (you have des_usr_var_size = 1)
Thank you for your help. I have modify the input data file like this
NiOparticle_input.dat (2.4 KB)
This is still some mistake
If you have defined a des user scalar, you need 8 columns, not 7. I think you also have your y and z coordinates mixed up. z must be between -2mm and +2mm
Thank you so much for your kindly reply. I delete the des user scalar in .mfx file. I try to modify the particle input data as you suggested, it still show some error.
NiOparticle_input.dat (2.4 KB)
0605.mfx (82.3 KB)
You need to carefully match the header of the file (T/F value for each variable) with the number of columns. Here line 27:
Density: T 3731.0
means you must provide a column of values of the density for each particle. This should be the fifth column.
Now, if you want to use the same density (3731 kg/m^3) for all particle, change line 27 to
Density: F 3731.0
and then you don’t need the extra column (use the 7 columns you currently have).
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