The simulation tag has no wiki summary.
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0answers
23 views
Rolling (without slipping) ball on a moving surface 2 [duplicate]
Possible Duplicate:
Rolling (without slipping) ball on a moving surface
Apparently I didn't log in properly when I asked a question this morning: Rolling (without slipping) ball on a moving ...
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0answers
60 views
Toolbox for Complex Networks and Graphs
Is there a toolbox which helps in visual simulation and modeling of a network (say a mesh or ring) consisting of coupled synchronized system of nonlinear equations(ODE) which represent a system of ...
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0answers
63 views
Good Magnetic Simulation Software? [duplicate]
Possible Duplicate:
Where can I find simulation software for electricity and magnets?
I am looking for a good, FREE software that allows me to play with magnets, coils, generators, the ...
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0answers
169 views
What does sound waves moving through 3D space look like, visually?
Imagine a room filled with air particles. How would a sound wave move in that room, refract from walls, and eventually dissipate?
I'd love to see a animation or simulation of some sorts of it.
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1answer
616 views
How to find acceleration given position and velocity?
Sorry for this very simple question but I am still very new to the laws of motion.
I am dealing with 2-dimensional vectors in my programming environment and I'm following these slides to learn about ...
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0answers
74 views
Physics for taffy pulling?
I am creating a simulation and am interested in pulling stretchy things and when they break, like taffy. I imagine this is a bit tougher then a simple equation like gravity, but I have no idea.
Is ...
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2answers
603 views
How to implement Heun's method to solve a 2nd order ODE? [closed]
I am trying to simulate a soft body object by having a collection of points connected by springs. I also want to have the object bounce on a plane. I have been able to implement Euler's method to make ...
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0answers
528 views
Damping and stiffness constants of water
I'm working on a simulation of water drops falling into a pool. I'm specifically interested in the waves generated by the impact of the drops. In order to calculate the vertical motion of the waves, I ...
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2answers
442 views
Plotting a wave function that represents a particle
The problem is this:
A particle is represented by the wave function $\psi = e^{-(x-x_{0})^2/2\alpha}\sin kx$. Plot the wave function $\psi$ and the probability distribution $|\psi(x)|^2$.
This ...
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2answers
100 views
I want the Saturn's position in terms of Declination and Right Ascension?
I want the Saturn's position in terms of Declination and Right Ascension for a couple of month in the interval of 1 hour in a text file to do a simulation. Which site can provide me these data?
Or, ...
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1answer
262 views
Are We Living in a Simulated Universe? [closed]
If the universe is just a Matrix- like simulation, how could we ever know? Physicist Silas Beane of the University of Bonn, Germany, thinks he has the answer!. His paper “Constraints on the Universe ...
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2answers
1k views
Wyckoff positions and lattice coordinations
Many papers use Wyckoff positions and Space Groups to report atom coordinates, making use of the structure's symmetries to save space in the notation (e.g. diamond = Fd-3m, only).
How can I ...
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1answer
2k views
Where can I find open-source weather forecast software? [closed]
Are there any software packages/frameworks for running weather forecast numeric models on a single PC? I've found at least two instances, but I'm interested to know whether there are more and where I ...
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2answers
145 views
Planet's Moon attrated by sun [closed]
I'm currently writing a code to generate solar system and $N$ number of planets / moons.
I use real data to test (earth / sun / moon data).
I succeeded in placing the earth and make it orbit around ...
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1answer
185 views
How does this problems are solved (modeling/simulation)? [closed]
Can somebody guide me in what to read and learn in order to be able to solve or understand how to solve the following types of problems:
The modeling/simulation of the bullet, shot into the water ...
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1answer
209 views
How is acceleration computed in the leap-frog algorithm in computer simulations of particles?
I am reading the book Computer Simulation of Liquids by Allen and Tildesley (here is another link). On page 80, the authors describe the leap-frog algorithm, which is used extensively in molecular ...
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2answers
120 views
From what we know about QM and Elements could we simulate the Universe in a Computer?
From what we know now about Quantum Mechanics and Elements, could we simulate life the Universe at a Quantum to Element level?
If we can't assume enough to create a sim, what fundamentals are we ...
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1answer
54 views
Bouncing ball simulation computer science
In my Computer science class I was given a problem where I have to simulate a bouncing ball using "real physics". I have been trying to find a equation that will simulate the height of the bounce ...
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1answer
178 views
How to simulate temperature change of oven?
I am trying to write a software, which will model the oven temperature change when turning on/off. The data I can get is graph, by taking temperature reading each second from T0 time up to some ...
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1answer
143 views
Software to simulate dynamics of objects in a given gravitation field [closed]
I want to simulate and test set of 2D designs that basically have pulley/gear/chain-linked systems under Gravity (For e.g. to check how a pulley would rotate given particular weights, of course I'm ...
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1answer
108 views
what to use for mass in a 2D FEM simulation
I am trying to find the energy of a wave travelling through a solid material in a 2D Finite Element Method (FEM) - Simulation.
As a general approach I would try to use $E_{kin}=\frac{1}{2}mv^2$ at ...
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1answer
650 views
How do I know an initial speed of a thrown object using the max height [closed]
The simulation being referred to is in box2d
An object is thrown to the max height of $h$ with gravity of $g$, what is it initial speed?
I tried the following:
$v = v_0 - g t$
$0 = v_0 - g t$
$t ...
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1answer
291 views
some hints/introductions/textbooks for LBM(Lattice Boltzmann methods) fluid simulation?
I come from a computer science background and I want to learn details about LBM in fluid simulation.
I have been searching around for a concise tutorial that tells me how LBM is used to solve a ...
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1answer
176 views
Friction + Bouncing of an Object against an Elastic Wall
I am trying to create the formula for applying a bouncing effect to an element which is already slowing down by friction.
At the moment I have an element which moves in one dimension at speed "S" and ...
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1answer
29 views
How much energy should I give into each particle in this equation:
I am trying to recreate the results of an article (membrane simulation) and I have the following line:
Both particles have the same soft radius,
$U_{rep} (r)/\epsilon = \text{exp}\left\{ -20 ...
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1answer
367 views
Physics simulation software to perform this very specific experiment
I need a physics simulation software that allows me to perform the following experiment:
1. Create a frictionless ramp/terrain defined by a parametric function;
2. Create a ball in an arbitrary ...
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0answers
20 views
Outflow for fluid simulation based on “Stable Fluids”
I've implemented a fluid simulation based on the paper Stable Fluids.
It works quite well, except I would like to have the velocity at the "upper" edge just to outflow and not to re-enter on the ...
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0answers
23 views
Verlet Leap-fog Method of approximating orbits [migrated]
I found the following simulation of an orbit given the semi-major axis of the ellipse, eccentricity, initial velocity, the mass of the object being orbited, and initial position of the orbiting ...
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0answers
34 views
Molecular dynamics simulation: fluctuating dipole model implementation
I'm conducting a molecular dynamics simulation for silica. Some time ago I turned to the fluctuating dipole model, and after much effort I'm still having problems implementing it.
In short, all ...
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0answers
20 views
How to make a fan like behavior [migrated]
I am making a game in Unity. I have an object e.g. cube. I want to release air from it like fan so that when other cubes come closer, it throws them away. What velocity,force etc I will need to do ...
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0answers
25 views
If we find a way to simulate a universe, are we likely to be living in a simulation? [closed]
If we eventually find a way to use quantum computers to simulate the creation of a consistent universe, does that prove that we are extremely likely to be living in a simulation?
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163 views
Simple thermodynamics simulation software [closed]
Just looking for some simulator that I can model a simple boiler with a heat source, overpressure valve and steam tap so I can play around with some parameters and learn the fundamentals of heat ...
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0answers
45 views
Should a 1D Guassian wave oscillate?
I wrote a few lines that numerically solve Maxwell's equations.
The result is a moving wave that looks like a single pulse.
This looks strange to me because I expect waves to move in oscillator ...
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0answers
100 views
Requesting decent analysis on FEMM simulation data
I have been running simulations in FEMM for different magnetic configurations as an attempt to understand better how do they work and why it is impossible to come up with the holy grail of energy: a ...
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1answer
73 views
Verify correctness of vintage BASIC drag race phyics simulation? [closed]
I wished to make a more user-friendly version of the vintage BASIC "Drag" program, as seen here, probably in the form of a light-hearted web game:
...
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0answers
108 views
Can critical slowing down be used to distinguish between first and second order phase transitions?
We are simulating a percolation dynamic system where we obtain first or second order phase transitions depending on certain parameters. For certain values it is clear that we are in the first-order ...
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0answers
10 views
Velocity Matrix Equation including throttle. [duplicate]
Possible Duplicate:
2D Car Physics including Throttle
For a simulation for testing on automatic cruise control, I came across with the equation.
To calculate the velocity for the next ...
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0answers
27 views
Software for simulating the motion of a test particle in a force field [duplicate]
Possible Duplicate:
Software for simulating 3D Newtonian dynamics of simple geometric objects (with force fields)
Is there any software for linux, which can simulate the motion of a test ...
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0answers
141 views
Best physics toys/models for learning [closed]
I'm trying to gather as many different physical or generally thought-provoking toys as possible.
I need to know what physics toys are out there, and where to get them.
I remember coming across an ...
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0answers
72 views
How to determine field strength of a dipole embedded in a sphere?
I have a dipole which is embedded in a sphere.
Sections of the sphere may consist of materials of differing magnetic permeability.
I'd like to determine the strength of the magnetic field at ...
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0answers
300 views
Hydraulic System in a Simulation
A simulation project we are on, we have a machine with hydraulics that are powered (They don't just look like they move something, they are the only thing moving/turning/lifting something) - However, ...
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0answers
179 views
Equations that govern SPICE models and how to perform the same simulations in MATLAB [closed]
SPICE is a great tool, but I want to be able to write my own code in MATLAB such that I can get faster results.
To start with, I have a simple but specific requirement. Once I understand and can ...
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1answer
356 views
Time traveling and Time dilation within a multiplayer videogame [closed]
First thing first, I'm looking to implement this within a multiplayer videogame as a "special" skill or powerup, but, I'm willing to build it upon a physics based explanation/theory.
The question may ...
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0answers
60 views
How to display particles [closed]
Not exactly physics question but physicist must have encountered this problem before.
In my code I generate a table of six tab separated columns (x,y,z,type,charge,id). I want to create a 3d ...
-1
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1answer
115 views
Air simulation environment [closed]
I will preface this with the fact that I am not a physicist...I am an engineer by trade. I am working on a research problem that will involve flight of an organism with varying shapes, and I am ...
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1answer
74 views
Earth and Moon computer simulation [closed]
So I want to simulate the solar system but want to start simple with one orbiting body.
However, I never did anything like this before and was wondering if anyone here could give me some hints.
...
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1answer
91 views
Simulating a car in an intersection
I'm somewhat confused. I want to simulate in real-time an intersection where cars have to turn left, right or go straight. What I have are 2 way points: One at the beginning of the intersection on ...
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2answers
95 views
Argument against computer consciousness [closed]
Imagine that we have a computer program that produces the conscious awareness of the present moment.
Let us assume that every time the program is run a counter is incremented.
Let us also assume ...
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1answer
64 views
How do we simulate Nuclear explosion? [closed]
I am interested in PC simulation, i use physics equations to simulate rain, fire, wind, cloud and lightning. it is a kind of VR (virtual reality).
what equation is able to simulate a virtual nuclear ...
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7answers
2k views
Does Quantum Physics really suggests this universe as a computer simulation? [closed]
I was reading about interesting article here which suggests that our universe is a big computer simulation and the proof of it is a Quantum Physics.
I know quantum physics tries to provide some ...
