User's guide of Proceessing Modflow 5.0

64 Processing Modflow
3.3 The File Menu
New Model
Select New Model to create a new model. A New Model dialog box allows you to specify a
filename on any available folder or drive for the new model. A PMWIN model must always have
the file extension .pm# (where # is the version number of Processing Modflow). All file names
valid under Windows 95/98/NT with up to 120 characters can be used. It is a good idea to save
every model in a separate folder, where the model and its output data will be kept. This will also
allow you to run several models simultaneously (multitasking).
Open Model...
Use Open Model... to load an existing PMWIN model. Once a model is opened, PMWIN
displays the filename of the model on the title bar.
Convert Model...
A Convert Models dialog box appears after selecting this menu item. The options in this dialog
box are grouped under three tabs - PMWIN 4.x, MODFLOW-88/96 and Telescoping Flow
Model (Fig. 3.10). Using the first two tabs, you can convert existing PMWIN 4.x or MODFLOW
models to the format of the present version of PMWIN. The use of these two tabs is
straightforward. First, click the open file button and select a PMWIN 4.x model or a
MODFLOW Name File from an Open dialog box. Then click the Convert button to start the
conversion. Refer to Appendix 3 for the definition of Name Files.
Telescoping Flow Model (Fig.3.11) allows you to create local-scale submodels from a
regional model. To create a submodel, just select an existing PMWIN model and specify the
subregion. Then click the Convert button. The flow simulation of existing PMWIN model must
be performed. The subregion is given by the starting and ending columns and rows. PMWIN
automatically transfers the model parameters and the calculated heads from the regional model
to the subregional local model. The boundary of the local model will be set to fixed-head
boundary (for steady-state simulations) or time-variant specified-head boundary (for transient
simulations).
Indenpendent of the selected tab, you can specify refinement factors for both column and
row directions. So you can load or create a model with a higher resolution for transport
simulations.
3.3 The File Menu