computer science

Visual MODFLOW

Visual MODFLOW is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Visual MODFLOW rather than just read about it. In short: Visual MODFLOW (VMOD) is a graphical interface (GUI) for the open source groundwater modeling engine MODFLOW. VMOD was developed by Waterloo Hydrogeologic and first released in 1994, the first commercially available GUI for MODFLOW.

Key takeaways

Visual MODFLOW belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Visual MODFLOW to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Visual MODFLOW from memory before moving on to harder problems.

Reference excerpt

Visual MODFLOW (VMOD) is a graphical interface (GUI) for the open source groundwater modeling engine MODFLOW. VMOD was developed by Waterloo Hydrogeologic and first released in 1994, the first commercially available GUI for MODFLOW. In May 2012 a .NET version of the software was rebranded as Visual MODFLOW Flex. The program includes proprietary extensions, such as MODFLOW-SURFACT, MT3DMS (mass-transport 3D multi-species) and a three-dimensional model explorer. Visual MODFLOW supports MODFLOW-2000, MODFLOW-2005, MODFLOW-NWT, MODFLOW-LGR, MODFLOW-SURFACT, and SEAWAT. The software is used primarily by hydrogeologists to simulate groundwater flow and contaminant transport.

History The original version of Visual MODFLOW, developed for MS-DOS by Nilson Guiguer, Thomas Franz and Bob Cleary, was released in August 1994. It was based on the USGS MODFLOW-88 and MODPATH code, and resembled the FLOWPATH program developed by Waterloo Hydrogeologic Inc. The first Windows based version was released in 1997. The main programmers were Sergei Schmakov, Alexander Liftshits, and Sean Wilson. A .NET version that included non-grid-based, graphical conceptual modelling features was released in 2012. On January 10, 2005, Waterloo Hydrogeologic was acquired by Schlumberger's Water Services Technology Group. On May 1, 2012, Waterloo Hydrogeologic released Visual MODFLOW Flex. On March 13, 2015, Waterloo Hydrogeologic was acquired by Nova Metrix.

References

External links Nova Ventures Waterloo Hydrogeologic, Inc

Worked examples

Example 1 — a first encounter with Visual MODFLOW

Start with the simplest possible case. Write down what Visual MODFLOW claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Visual MODFLOW before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Visual MODFLOW ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Visual MODFLOW

In research: Visual MODFLOW appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Visual MODFLOW in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Visual MODFLOW is common in secondary-school and first-year university syllabi. It links to neighbouring topics Hydrogeology software, Hydrology stubs, Scientific simulation software, so understanding it makes those chapters shorter.
In everyday life: Look for Visual MODFLOW outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Visual MODFLOW in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Visual MODFLOW means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Visual MODFLOW out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Visual MODFLOW in simple terms?

Why does Visual MODFLOW matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Visual MODFLOW?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Visual MODFLOW.