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RMA4 Evaporation problem


Sergio
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Hi

I have to run RMA4 on RMA2 dynamic simulation with a rate of evaporation.

RMA4 works fine if the solution of RMA2 has not evaporation rate.

When i try to run RMA4 with a RMA2 dynamic simulation with evaporation rate I obtain this error:

[...]

Fatal Error Detected in MAIN. RA-Card Conflict. STOP.

RMA2 Rainfall or Evaporation Status. Flag IREC(2) = 1

RMA4 Rainfall or Evaporation Status. Flag IRAEV_R4= 0

Consitency is required to achieve a correct solution.

RA-EV

Any suggestion?

Thanks.

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Hi

I have to run RMA4 on RMA2 dynamic simulation with a rate of evaporation.

RMA4 works fine if the solution of RMA2 has not evaporation rate.

When i try to run RMA4 with a RMA2 dynamic simulation with evaporation rate I obtain this error:

Any suggestion?

Thanks.

I would simply add the same RA-cards to your trn-file (probably not possible through SMS, so try editing by hand with notepad or similar text editor). Below a quote from the manual:

“Whenever the hydrodynamic field, used as input to the RMA4 simulation, had a rainfall and or evaporation criterion specified, then the user must supply the water quality transport model with the same rate that was used during the hydrodynamic model. Once the rate is provided, the RMA4 model will know to supply a zero concentration rate for a rainfall event and to extract the ambient concentration for an evaporation event.” Users Guide RMA4 WES Version 4.5, page 44.

Heimo

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