Update drag and include viscous option

Update inputs to be consistent with changes in https://mfix.netl.doe.gov/gitlab/exa/mfix/-/merge_requests/1361

New keyword added for including viscous stress in drag force.

added 1 commit

• e69bcddb - Update for changes to drag model and add viscous stress flag

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marked this merge request as ready

merged

mentioned in commit 74416fbf