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Potential energy to Velocity
Clone of Velocity
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Problem of the sliding chain
Clone of Sliding Chain
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Problem of the sliding chain
Clone of Sliding Chain
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Z206 from Hartmut Bossel System Zoo 1 p99-102 See also a beautiful Youtube 3D Video Simulation

Clone of Lorenz Attractor
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Practicum Paris Gun
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A PID control loop for a simple linear system
Some stochasticity in the throttles and sensors
Double 1st order PID loop
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Clone of Nuclear Decay Chain
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L'idée est de simuler le fonctionnement d'un siphon (vidange brusque d'un réservoir lorsqu'un certain seuil est atteint). Le flux de remplissage est basé sur une sinusoïde dont on peut régler l'amplitude et la fréquence (seule la partie positive de l'oscillation est utilisée).

Dans un second temps, nous utiliserons ensuite l'idée du siphon pour construire un circuit logique hydraulique non trivial (en l'occurrence un additionneur).
Simulation d'un siphon
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Simple periodically driven damped oscillator.
Periodically Driven Damped Oscillator
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Clone of Nuclear Decay Chain
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This shows the motion of a simple harmonic oscillator, described in terms of the natural frequency of oscillation. An accurate solution requires a small time step and RK4 as the integration algorithm.
Simple harmonic oscillator 2
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5. Lanceren van een raket in 1 dimensie
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Simple example of a 1D spring "solving" the differential equation using flows (dQ/dt) and stocks (Q). I had to remove "units" because you don't seem to be able to create units, by combining existing units. I needed "N/m" for the spring constant.
Clone of 1D Spring
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Clone of Wind Resistance Model
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Le but de cette simulation est de mettre en place des primitives qui génèrent des flux de diverses formes (sinusoïdales, rectangulaires,  triangulaires et en dent de scie) qui pourront ensuite être utilisées dans d'autres circuits hydrauliques plus complexes.
Hydraulic wave generators
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Clone of Wind Resistance Model
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A Fourier series is a way to expand a periodic function in terms of sines and cosines. The Fourier series is named after Joseph Fourier, who introduced the series as he solved for a mathematical way to describe how heat transfers in a metal plate.

The GIFs above show the 8-term Fourier series approximations of the square wave and the sawtooth wave.

Clone of Fourier series
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Potential energy to Velocity
Clone of Velocity
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Le but de cette simulation est de simuler l'évolution de niveau entre deux ou plusieurs réservoirs qui se remplissent l'un l'autre.

Les niveaux se stabilisent vers une valeur asymptotique.

On peut changer la valeur des résistances d'écoulement entre les différents réservoirs, ce qui change les niveaux d'équilibre des réservoirs une fois l'état stationnaire atteint.
Hydraulic oscillator
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Simulation der Flugbahn eines Federballs
Schiefer Wurf mit Strömungswiderstand
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Problem of the sliding chain
Clone of Sliding Chain
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OBLIQUE THROW IN VACUUM

A body is thrown obliquely into the vacuum at an initial velocity of 100 m / s, in a direction that forms with the horizontal an angle x, such that sin (x) = 0.8 and cos (x) = 0.6. Adopting g = 10m / s², determine:

(a) the horizontal and vertical velocity component modules at the moment of launch;

(b) the instant at which the body reaches the highest point of its trajectory;

c) the maximum height reached by the body;

d) The range of the throw.

Source: RAMALHO, NICOLAU AND TOLEDO; Fundamentos de Física, Volume 1, 8th edition, pp. 12 - 169, 2003.

This model may be cloned and modified without prior permission of the authors. Thanks for quoting the source.

Lancamento obliquo no vacuo
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Rotating Pendulum Z201 from System Zoo 1 p80-83

Clone of Rotating Pendulum