Philip S.

Hi, I would like to simulate local outflow/discharge from my groundwater system. The outflow has a specific reference elevation (m). The outflow volume [Q] (l/s) should be modelled dynamic according to the simulated head [H] as follows:   H(1): 0.01, Q(1): 1 l/s H(2): 0.05, Q(2): 17 l/s H(3): 0.10, Q(3): 47 l/s H(4): 0.15, Q(4): 86 l/s H(5): 0.20, Q(5): 132 l/s For example, if the simulated head is 0,10 m, 47 l/s should be removed from the system. So far, I have applied a Head BC using a min. and max. flow-rate constraint. However, this approach only allows for specifying one discharger rate (although I want to express several discharge rates according to the above head-discharge relationship). So: how can I simulate the removal of groundwater at a given location according to the above relationship?

I would like to export the simulated (and observed) heads on a coherent time step interval, i.e., daily, for post processing (e.g., performance evaluation).<br> <br> While the observed time remain consistently on daily time steps in the model, the simulated time series do sometimes include additional intra-daily time steps, e.g.: <table style="border-collapse:collapse;width:54pt;border:none;" width=72> <colgroup> <col style="width:54pt;" width=72> </colgroup> <tbody> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42995.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><strong><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42995.49</span></span></span></span></span></span></strong></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42996.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><strong><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42996.73</span></span></span></span></span></span></strong></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42997.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42998.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">42999.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">43000.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">43001.00</span></span></span></span></span></span></td> </tr> <tr height=20 style="height:15.0pt;"> <td class=xl64 height=20 style="border:none;height:15.0pt;width:54pt;text-align:center;white-space:normal;padding-top:1px;padding-right:1px;padding-left:1px;vertical-align:bottom;" width=72><span style="font-size:10pt;"><span style="color:black;"><span style="font-family:Arial,sans-serif;"><span style="font-weight:400;"><span style="font-style:normal;"><span style="text-decoration:none;">43002.00</span></span></span></span></span></span><br> &#160;</td> </tr> </tbody> </table> Therefore, the length of the simulated time series is longer than the observed time series.<br> <br> Is there a way to export the simulation results in the time steps as given/defined by the observed time series?<br> <br> Cheers