USING ANALYTIC SOLUTIONS AND THE ANALYTIC ELEMENT METHOD FOR SOLVING GROUNDWATER PROBLEMS
STRACK CONSULTING, LLC.
October 25 through 28, 2017
The short course will be focused on the use of elementary analytic solutions and models created with the Analytic Element Method for solving groundwater flow problems. The approach to solving groundwater problems, regardless of their complexity, is greatly enhanced in terms of both insight and efficiency by carrying out preliminary computations. Such computations may consist of relatively simple solutions amenable to implementation, either in inter-active computer programs such as MATLAB®, or in dedicated analytic element computer programs such as SLAEM or MLAEM.
A topic that will be discussed in detail is the idea of vertically integrated flow, an approach that is particularly suited for assessing groundwater availability and sustainability. In this approach, systems of stacked aquifers are considered as a whole, with the objective to determine the total amount of flow in the system, rather than focusing on the distribution of flow over the layers. A major benefit of vertically integrated flow modeling is that fewer data are required to create a model, and that the models reduce to models of a single, but integrated, aquifer. Vertically integrated models are useful, not only to assess groundwater sustainability, but also as a first step for, and a check of, complex numerical models.
Some examples of questions that can often be answered rather well in this way are listed below:
- When is it necessary to use a three-dimensional approach? For example, under what conditions should partial penetration of a well be taken into account?
- Under what conditions are transient effects critical, and when can transient effects be approximated and when not?
- Under what conditions are river stage fluctuations important, and how far do they penetrate into an aquifer?
- Can regional hydraulic conductivity be approximately determined using rainfall data and, if so, how?
- Does transient pumping of a well cause groundwater level fluctuations that need to be considered, or can an average pumping rate be used? If so, under what conditions is this useful?
- What is the effect of uncased wells, and other connections between aquifers in a multi-aquifer setting.
- What effect will agricultural irrigation have on groundwater flow in multi-aquifer settings?
These examples are just a few of the many cases where a simple analytical solution can provide insight, beneficial in the process of creating a complex computer model.
The emphasis of the course is on both creating cost-effective analytic models for problems amenable to analytic treatment, and on creating preliminary solutions to guide more complex modeling efforts.
Attendees will actively participate in constructing solutions; lectures will be followed by problem-solving sessions before new material will be covered.
- An introduction to the basic principles of groundwater flow, illustrated by practical examples.
- A step by step coverage of the theoretical basis of the analytic element method. A detailed coverage of the use of SLAEM.
- Elementary and cost-effective computations designed to gain insight in a variety of practical groundwater flow problems.
- Vertically integrated flow.
- An introduction to multi-aquifer flow.
COURSE MATERIAL AND FORMAT
The course will be intensive: experience with similar courses in Europe, Brazil, China, and the USA demonstrates the benefits of an intensive program with the participants playing an active role.
Participants will be given a pdf version of Strack’s new text: Analytical Groundwater Mechanics (to be published by Cambridge University Press, 2017.
Participants will be given a licensed copy of the analytic element program SLAEM.
The course will be given in a beautiful setting in rural Wisconsin at the site of Strack’s Hay Farm (see the photo below); lodging is available in a number of hotels within a 12- mile radius. Lunch and dinner will be provided; the course will include evening sessions. The farm is 90 miles from the international airport in Minneapolis/St Paul, (MSP).
The instructor will write all lecture notes on the spot on a tablet (projected in high resolution on a screen). The notes will be distributed at the end of each day in pdf form. A second projector will be used to project the contents of the computer screen where the modeling is carried out. In this way, the participants will see both the stated problem, its solution and its implementation, all at the same time and side-by-side. The lectures are given in a lecture room, designed for the purpose. Participants will be able to relax by walking over the many trails that are maintained on the 175-acre property.
Flow of groundwater: Basic principles, theory, elementary solutions, transient flow, and convective transport with retardation and decay.
The Analytic Element Method: The method was developed by the instructor at the University of Minnesota specifically for modeling regional flow. This method has been used intensively over many years worldwide. A number of conferences on the analytic element method have been held over the years. The next one was held in June 2015 in conjunction with the MODFLOW and MORE conference.
EXAMPLES OF TOPICS
Applications will vary from course to course and are affected by suggestions by the audience. Examples of possible applications are listed below.
- Capture zone analysis using SLAEM.
- Contaminant transport: The principles of elementary contaminant transport, as well as implementation in the computer models.
- Modeling the interaction between surface water and aquifers via leakage. Distribution of leakage along river and lake bottoms and its proper representation in computer models.
- Vertically integrated flow
- Three-dimensional flow.
- Modeling interaction between aquifers via leakage.
- Modeling transient flow using analytic elements.
WHO SHOULD ATTEND
The course is intended for engineers and scientists interested in the analytic element method for groundwater modeling, and in field problems of groundwater flow and transport. Considerable individual attention can be given during the problem/computer sessions; people with a variety of backgrounds can therefore be accommodated. Minimum requirements, however, are a working knowledge of elementary algebra and differential calculus.
The participants will:
- Receive a copy (pdf) of Applied Groundwater Mechanics on your computer.
- Receive a copy of SLAEM on your computer.
- Learn how to carry out analyses prior to setting up the problem on a computer. Learn how to use the computer programs SLAEM and MLAEM.
OTTO D.L. STRACK, Professor of Civil Engineering, University of Minnesota, developer of the Analytic Element Method. He has a Ph.D. (1973) in Civil Engineering from the Delft University of Technology, The Netherlands. His research and teaching centers around computer modeling of groundwater flow and transport using analytic elements. He has been involved in numerous computer modeling efforts since 1974, both as part of his University of Minnesota professorship and as president of Strack Consulting, LLC.. He is also the author of Groundwater Mechanics, 1989, Prentice Hall.
Assistance will be given during the modeling sessions by graduate students.
Morning sessions begin at 9:00 a.m. each day with a break for lunch at 12:00. Dinner break is at 5:00 p.m. At 6:30 p.m. participants reconvene for a computer lab until 8:00 p.m. The final morning session of the short course is on Saturday. The final afternoon is devoted to case-histories; attendance is optional. The short course will conclude at 5:00 p.m. on Saturday.
Wednesday, October 25, 2017
- Basic principles of groundwater flow
- Types of flow
- Elementary solutions
- Introduction to using SLAEM
Thursday, October 26, 2017
- Vertically integrated flow
- Flow in systems of two aquifers
- Transient flow
Friday, October 27, 2017
- Modeling with analytic elements; examples.
- Three-dimensional flow
- Contaminant transport in three dimensions
Saturday, October 28, 2017
- Case histories
- Application to field problems
Tuition (including lunch, dinner, and refreshments) $ 1,250.00
Participation in the short course is by pre-registration only. Strack Consulting, LLC. reserves the right to cancel the course if necessary.
Registration, or intention to register, must be received at Strack Consulting, LLC. by October 10, 2017. The registration fee will be refunded if Strack Consulting, LLC. cancels the short course.
The short course will be held at Strack’s Hay Farm, W1666 Owen Valley Road, Nelson, Wisconsin 54756.
There are several hotels and motels in the vicinity of the farm. For information on lodging, please contact Strack Consulting LLC.
CONTINUING EDUCATION UNITS
Individuals completing this course will be awarded 4 CEU credits. One CEU is defined as ten contact hours of participation in an organized continuing education experience under responsible sponsorship, capable direction, and qualified instruction. Strack Consulting, LLC maintains a permanent record of CEUs.
TAX DEDUCTION OF EXPENSES
An income-tax deduction is allowed for expenses of education (including registration fees, travel, meals, lodging) undertaken to maintain and improve professional skills.
For further information contact:
Andrine D. Strack
W1666 Owen Valley Road, WI 54756
Tel. (715) 673-4392
E mail: email@example.com