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A Computer Program for Flow‐Log Analysis of Single Holes (FLASH)
Author(s) -
DayLewis Frederick D.,
Johnson Carole D.,
Paillet Frederick L.,
Halford Keith J.
Publication year - 2011
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.2011.00798.x
Subject(s) - borehole , flow (mathematics) , flash (photography) , computer program , computer science , calibration , source code , code (set theory) , aquifer , geology , geotechnical engineering , mechanics , programming language , groundwater , mathematics , physics , optics , set (abstract data type) , statistics
A new computer program, FLASH (Flow‐Log Analysis of Single Holes), is presented for the analysis of borehole vertical flow logs. The code is based on an analytical solution for steady‐state multilayer radial flow to a borehole. The code includes options for (1) discrete fractures and (2) multilayer aquifers. Given vertical flow profiles collected under both ambient and stressed (pumping or injection) conditions, the user can estimate fracture (or layer) transmissivities and far‐field hydraulic heads. FLASH is coded in Microsoft Excel 5 with Visual Basic for Applications routines. The code supports manual and automated model calibration.