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SUMMARY:Analytic transient multi-layer modeling: no grid or time-stepping 
 needed 
DTSTART:20111004T161500
DTSTAMP:20260501T070656Z
UID:08d04bbfb643fb018d4fd37988e5c0b57c63faa7f22a00b30622a7b9
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Mark Bakker\, Department of Civil Engineering and Geoscienc
 es Delft University of Technology\, NL\nA new analytic approach is present
 ed for the transient modeling of groundwater flow in multi-layer systems. 
 As the approach is analytic\, no grid or time-stepping is needed. The appr
 oach is based on the Laplace-transform analytic element method. A brief ov
 erview of the analytic element will be given. The approach is implemented 
 in the free and open-source computer program TTim (available from code.goo
 gle.com/p/ttim). The current implementation allows for the modeling of wel
 ls\, streams\, and vertical fractures in systems with an arbitrary number 
 of layers. Well screens\, streams\, and fractures may be open to any numbe
 r of layers. Features that may be modeled include: delayed response of the
  water table\, wellbore storage\, vertical anisotropy\, flow through aband
 oned wells or vertical fractures\, and the quick response of heads in obse
 rvation wells that are screened below the phreatic surface. TTim (pronounc
 e: tee-tim) is written in Python. The input for a simple TTim model consis
 ts of only a few lines of Python. For more complicated models\, the input 
 may be read from\, for example\, GIS shape files. TTim has many practical 
 applications\, including the design of riverbank filtration systems\, anal
 ysis of aquifer tests near surface water bodies\, design and evaluation of
  recirculation wells\, and modeling of the transient pressure response of 
 proposed carbon geologic sequestration projects. In addition\, the short a
 nd simple input files and the absence of grids and time stepping make TTim
  well suited for education.
LOCATION:GR C0 01
STATUS:CONFIRMED
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