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Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the streamlines...

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Related Experiment Video

Updated: Jun 20, 2026

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Published on: November 18, 2015

DECSERVIS-2: a tool for natural decay series mass flow simulation.

Saad Azzam¹, Juhani Suksi, Michael Ammann

¹Laboratory of Radiochemistry, Department of Chemistry, University of Helsinki, Finland.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine

|August 25, 2009

Summary

The new DECSERVIS-2 software simulates radioactive decay chains in open systems with mass flows. This tool visualizes nuclide activity, mass, and ratios over time, aiding teaching and research.

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Last Updated: Jun 20, 2026

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

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Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole

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Published on: August 26, 2019

Area of Science:

Nuclear Physics
Radiochemistry
Environmental Science

Background:

Previous version DECSERVIS enabled visualization of radioactive decay series.
Open systems require modeling of nuclide mass flows impacting concentrations.

Purpose of the Study:

Introduce DECSERVIS-2, an enhanced tool for simulating radioactive decay chains in open systems.
Demonstrate the software's capabilities with practical simulation examples.
Provide an accessible tool for educational purposes in nuclear science.

Main Methods:

Simulation of radioactive decay chains incorporating continuous and successive nuclide mass flow events.
Modeling of mass flows into and out of the system at user-defined time intervals.
Graphical presentation of simulation outputs including nuclide activity, mass, and ratios over time.

Main Results:

DECSERVIS-2 successfully simulates radioactive decay chains in open systems with dynamic mass flows.
The software provides comprehensive output data for the entire decay chain.
Various graphical presentations (curves, columns, animation) enhance data visualization.

Conclusions:

DECSERVIS-2 is a versatile and user-friendly tool for simulating complex radioactive decay scenarios.
The software effectively models the impact of mass flows on nuclide concentrations in open systems.
DECSERVIS-2 is well-suited for both research applications and educational instruction.