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Questions tagged [simulation]

Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails representing certain key characteristics or behaviours of a selected physical or abstract system.

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LAN simulation using Java?

I have to create a Java program that simulates around 50-100 nodes. I want to test a few routing algorithms and analyse network performance. I tried simulating nodes with threads, but my CPU utilization goes up like anything when I use more threads.…
shri ram
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Faster code in R

FYI: I have edited this significantly since my first edition. This simulation has been reduced from taking 14 hours to 14 minutes. I am new to programming but I have made a simulation that tries to follow asexual replication in an organism and…
Kevin
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Continuous Physics Engine's Collision Detection Techniques

I'm working on a purely continuous physics engine, and I need to choose algorithms for broad and narrow phase collision detection. "Purely continuous" means I never do intersection tests, but instead want to find ways to catch every collision before…
Griffin
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Real-time fluid simulation techniques

What techniques are used for the real-time simulation of fluids such as water, for example in videogames? In particular, I am looking for a project-idea for an (unfortunately rather short) physics project at Uni, so the simpler the better (if there…
Ben
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What is the best architecture for this simulator?

I have to make a simulator in Java, which will simulate car riding on highway. There should be 3 lanes on highway, in every lane there are cars with constant speed. On this highway, there is one agent, which has to drive through and not crash into…
vasco
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GPU-accelerated hardware simulation?

I am investigating if GPGPUs could be used for accelerating simulation of hardware. My reasoning is this: As hardware by nature is very parallel, why simulate on highly sequential CPUs? GPUs would be excellent for this, if not for their restrictive…
eisbaw
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How do I simulate data for a power analysis of a repeated measure linear mixed effects regression using simr?

I would like to conduct a simulation-based power analysis for a linear mixed model in lmer with repeated measures from scratch. I understand that simr might be the package to go with. However, I do not understand what I have to do and am not able to…
Sebastian N
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VCD dump for vhdl simulation via modelsim. HOWTO?

It's the first time i try to generate a VCD and i am getting some troubles. I have a testbench called bench_minimips.vhdl that contain the entity sim_minimips. I want simulate it and get a VCD out of it. i am typing the following command in the…
Stefano
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Water in a falling sand simulation

I am currently working on a very simple 'Falling Sand' simulation game in C++ and SDL2, and am having problems with getting water to flow in a more realistic manner. I basically have a grid of cells that I iterate through bottom-to-top,…
James Mclaughlin
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Javascript chain rule, return specific value instead of [Object object] [x]

The question is at the title, but first please look at this code: function number(a) { return { add: function(b) { result = a + b; return this; }, substract(b) { result = a - b; …
xx3004
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How to visually animate Markov chains in Python?

I want to "visually" animate Markov chains like here : http://markov.yoriz.co.uk/ but using Python instead of html css and javascript. I don't know if there is any library that makes this easy, till now I managed to make a visual representation of…
mac179
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Ant simulation: it's better to create a Process/Thread for each Ant or something else?

The simple study is: Ant life simulation I'm creating an OO structure that see a Class for the Anthill, a Class for the Ant and a Class for the whole simulator. Now I'm brainstorming on "how to" make Ants 'live'... I know that there are projects…
MiPnamic
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Comparison of two vectors resulted after simulation

I would like to apply the Rejection sampling method to simulate a random vector Y=(Y_1, Y_2) of a uniform distribution from a unit disc D = { (X_1 , X_2) \in R^2: \sqrt{x^2_1 + x^2_2} ≤ 1} such that X = (X_1 , X_ 2) is random vector of a uniform…
Sophie Allan
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Finite element method introduction references

Could you recommend some good articles/notes/tutorials on finite element method (FEM)? I don't deal with advanced math every day, so a tutorial that introduces me to math needed to understand FEM will be great. My goal is to write my own simulation…
martin89
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Robocup Soccer simulation 2D learning resources

Does anyone know any good resources to start?
Omid Kamangar
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