Model crashing after putting atmospheric parameters

EFDC_Explorer
1

Hi,
I need an emergency help. My model is crashing, I am getting Error: Floating Overflow while running EFDC. I put some values for Atmospheric Parameters and after that model is crashing:
Evap Transfer Coeff: -1 (to use WSP drag)
Conv Transfer Coeff: -1 (to use WSP drag)
Fast SolRad Attenuation Coefficient: 5
Slow SolRad Attenuation Coefficient: 0
Fraction SolRad Attenuation Coefficient: 1
Convective Heat Transfer Coefficient (no dim): 0.3
Heat Transfer Coefficient between Bed/WC(m/s): 0.0000005
Thermal Thickness of Bed (m): 1

Please help me out.

2

Was your model running before you changed these parameters ? Are you sure there is no input problem in the model ?

John

3

Hello John,
Thank you for your response. I played around with the parameters, now the model is running but the run stops at Time Step 117 (day) whereas it is supposed to run until 241 (day). Time step is 5 sec and # Ramp-up Loops is 1000. The atmospheric parameters are as follow:
Evap Transfer Coeff: -1 (to use WSP drag)
Conv Transfer Coeff: -1 (to use WSP drag)
Fast SolRad Attenuation Coefficient: 5
Slow SolRad Attenuation Coefficient: 1
Fraction SolRad Attenuation Coefficient: 0.5
Convective Heat Transfer Coefficient (no dim): 0.3
Heat Transfer Coefficient between Bed/WC(m/s): 0.0000005
Thermal Thickness of Bed (m): 1

Also could you let me know what is the difference between Fast SolRad Attenuation Coefficient and Fraction SolRad Attenuation Coefficient?

Thanks,
Rumana