Simulation Definition and 897 Threads

I have to write, with two friends, a simulation based physics paper at school. The problem is, that will I am quite familiar with the concepts of calculus and algebra, my friends aren't. So, we could find a good topic. The task is, to write a paper about a physical topic, with the use of a...

Hello guys i want to compose a code (in C++) for Ns3 to simulate the fuctionality of sliding window , maybe can help me somebody!

Do you think we will ever be able to create a simplified computer simulation of the universe using the cosmic microwave background as the initial state that would generate the true locations of galaxies or at least galaxy clusters, and then be able to find our own galaxy or galaxy cluster within...

The article can be found here: http://www.washington.edu/news/2012/12/10/do-we-live-in-a-computer-simulation-uw-researchers-say-idea-can-be-tested/ Here is the actual paper: http://arxiv.org/abs/1210.1847 My question is not about the validity of his premises - because I actually don't...

Hello, I have modell in Ansoft Maxwell sumulate and need to transfer (import) it in Workbench ANSYS for the next step (Thermal analysis). How can i import it? Thank.

hi there, i'm trying a to simulate a savonius rotor in simulink. below is brief summary of how much i have done:- 1. derived the equations for torque. 2. MATLAB code done. 3. in simulink the equation I'm using to get the angular velocity and angular position is T...

Hi Cthugha In my previous thread which has now been closed, you mentioned the Hong-Ou-Mandel effect. I have attempted to simulate it in an Excel spreadsheet but I have not managed to obtain the correct-looking results. I have attached a Jpeg of the spreadsheet and would be very grateful if...

Hello all, I have been working on an NPT monte carlo simulation. I would like to know how I can measure the instantaneous pressure of the system at each monte carlo step?

Hello, I am using MATLAB to simulate a Fraunhofer diffraction pattern for a given aperture, but I have a little question. Hope someone can help. Sorry I am just a high school student and does not completely understand all mathematic deductions about Fraunhofer Diffraction on Wikipedia. I...

Hallo, I Need to know how is possible to simulate in OrCad Pspice this mathemathical equation. This will be my reference waveform and later I will design my own electrical circuit to be as Close as is possible mathemathical equation. I have Problem how to design time dependant current Output...

i am a complete nooby in statistics, therefore the question i am about to ask may sound very unprofessional warning :) so, we have a task to simulate a G/G/1 queueing system for particular parameters (Erlang distribution is assumed). I have been able (hopefully) to find out what mean and number...

Hey everybody! I wanted to simulate an antenna in Low Frequency, but I don't know any suitable software for this purpose. I'll appreciate if anybody could help me out... Thanks

The picture shows the potential due to ring charge. Please show the full steps of deriving the equation of electrical potential. I don't know how to start at all. NOTE: The electric potential of the revolving symmetrical ring electric charge related to the axis z as depicted in the diagram...

I am writing a MATLAB script that generates a dynamic simulation of a piston being driven by compressed air. My starting values for pressure and volume are as follows: P0 = 14000000; %nm-2 or 140 Bar V0 = 0.005; %m3 or 500cc The simulation needs to be quite detailed and must take into account...

1. In a crash simulation, a car traveling at x m/s can stop at a distance d m with a maximum deceleration. If the car is traveling at 2x m/s: A. Stopping time is doubled B. Stopping distance is doubled C. Stopping distance is quadrupled D. Both A and C Ok, so I thought this was a...

I am creating a particle in cell simulation that models an electron plasma in a cylindrical container. Part of this process is assigning charge density to grid points based on the position of each particle. My question is this: for the examples of these simulations that I have seen, the charge...

I am trying to simulate a Gaussian beam through an optical waveguide having a circular cross-section in matlab. I am familiar with the theory of modes in an optical fiber and can analytically calculate the evolution of the beam by breaking down the beam into a sum of infinite modes. However, I...

The solution's form for the ODE $$\frac{d\vec{r}(t)}{dt\;\;\;\;} = k\;\vec{r}(t)$$ can be generalized like in this diagram: https://upload.wikimedia.org/wikipedia/commons/3/35/Phase_plane_nodes.svg Exist some program or some way of adjust some program of math for study the behavior of the...

Hi,does exist any simulation of Sun and Earth circulation with data of lasting of day and night in different places on Earth during seasons? Thanks a lot

Good morning/afternoon/evening to all, I have a question for those more familiar with simulation software. Allow me to elaborate on my situation: My professor and I have nearly completed our journal submission on space photonic laser thrusters, and we have built upon recent ideas brought...

I want to simulate the absorption spectra of gold octahedra when irradiated by a light source, according to the information I have gathered I can use discrete dipole approximation technique because octahedra is not spherical (in contrast to Mie Theory which is applicable to spherical particles)...

Hello, 1. Does anybody know which book that gives a good explanation about monte carlo simulation? I've read many tutorials, it mentions about its error, accuracy, variance. But, many of them don't actually show, how to perform monte carlo simulation. Questions 2. Is it actually the same...

i am trying to simulate on "overload alert for a transformer using voice circuit"- i am using a current transformer as current sensor which is connected to controller PIC16F72 in the hardware design for constant checking of current of a transformer and a voice circuit is used. Now while doing...

Hey all, This may be a bit of a stupid question, but I'll ask it anyway... For the past weeks I've been running some DEM (discrete element method) simulations, and each simulations produces a couple output files and has different input variables/commands stored in a separate file. Already I...

hi all. i have an assignment to design a gear system. so, anyone can suggest me a software that i can make a simulation about a gear? prefer simple software that got a lot of function. thank~~ Edit: i tried this software http://gears-simulator.software.informer.com/3.0/ but i need a function to...

Hi Im busy creating an application to simulation a rocket in orbit. I am having trouble as the results I am getting are incorrect. Could someone please check if I am using the correct method as stated below. Everything works on a 2d plane, and has a x and y coordinate and a x and y...

Hello, I need to make a simple model of human hand with a vein that has the same pressure of a real vein 10 to 30 mmHg ,basically I want to use it with my iv infusion pump design ,please could you tell me what is the best way to do that?

Hi, I have a problem with my simulation (Multisim). I don't find the error. Voltage and current increase very high in a short time. It's only 3 selfs with coefficient at 0.9 for L1/L2 and for L2/L3. K is at 0 for L1/L3. I give image for the circuit and the result of simulation. The problem...

1. Homework Statement ----------------------------------------------------------------------------------------- CONTEXT: I'm writing an AI simulation for am upcoming assessment in my computer programming course, and I'm having some trouble with the physics and calculations. The simulation...

The Monte Carlo simulation is a very important tool in particle physics specially to tune in the preciseness of the real time experiment. In particle physics, I had an opportunity to work on the data analysis of neutrino flux produced from the g4numi (the Neutrino beam from main injector, in...

Hey, does anyone know what software is used on the astrophysics videos made by NASA? Or similar modeling software where I can play around a bit creating solar systems and stuff like that? Thanks

I found this constant current source circuit over at instructables.com. This circuit calls for 2N5088BU for Q1 and FQP50N06L for M1, but I replaced those parts with 2N2222 for Q1 and PHT6NQ10T for M1 because that's what I have on hand for simulation. I calculated R2 = 0.5/0.125 = 4 ohms, but in...

Hi, all. Could anyone recommend some good software for modeling nuclear physics? I have concept nuclear rocket that I wanted to attempt to model the engine for to see how practical it would be. In case it's relevant: The design is a subcritical fast dusty fission fragment reactor driven by a...

I would like some introductory level references for building an n-body gravity simulation. I work for the supercomputer challenge [ http://challenge.nm.org/ ] and I build the teaching models each year we use to train teachers in computer modeling and provide as an example model for the students...

Hi! I want to simulate some circuits with PNP BJTs. I was given voltages VEB=0.7V and VECsaturation=0.2V so my question is how can I modify PNP BJT to use these voltages?

Okay in class we performed a lab consisting of a Helmholtz pair and we need (to compare to experimental values) to model the magnetic field through a computer simulation. Most of the class is probably going to use MATLAB but I do not have it nor know how to use it. So in this case the teacher...

what is program used as attached.thank you!

Hi! I recently tried to perform a simulation of a physical process on Comsol Multiphysics (namely I tried ot find the harmonics of a musical instrument) and I felt incredibly lost at it. I'm normally good with computer programs, and I knew the overall physics of it, but I didn't even know...

I am working on the prelab for my class right now, and I am having difficulties understanding how to get my Multisim to work. Sadly we have not learned about Op-Amps, and by design our instructor has us do problems involving things not taught in class in order to force us to do research and...

Hi guys, my friend and i are planning on creating an evolution simulation. We are however, trying to balance between the amount of time to write code and the amount of time our simulation will take to run, and how fast it runs(the simulation is in real time). So, what programming language do you...

What are some free or commercially available simulation programs? The simulations I'd like to run would be related to spark discharge, electromagnetism, general chemistry, metal alloys, diamagnetic levitation, and such. It's nice knowing the formulas and theories behind stuff, but it'd be much...

How can I give interface traps while simulating a power MOSFET in Silvaco ATLAS tool?

I am attempting to create a spreadsheet that models the flight path of a sphere. My model should consider air resistance, but I've opted to ignore magnum. As a resource to help me, I'm using http://www.team2834.com/team_documents/Projectile_motion_with_air_resistance.pdf, but I have ran into...

Hi all, I have started learning ansys workbench for steady state heat transfer based analysis. I am doing this analysis to validate analytical results given for heat transfer from a single plate fin. The fin tip is given a base temperature and heat transfer is calculated for natural...

Hello :) I have created a flyback converter model using Simpowersystems in Simulink/Matlab. But it always gives me the wrong answer! I have simulated the same system using PLECS and Simscape/simulink and got the correct answer. But with my Simpowersystems model, it always gives me the wrong...

Hi all, I have a question about simulating (Monte Carlo) proton-proton collisions resulting in, for example, a Z boson. Assume two quarks (quark and antiquark) from each proton collide head-on along the z-axis. The quark momenta are distributed according to the Parton Density Functions...

For my own personal project I want to simulate our solar system on a computer program. I understand that the force applied on a body due to gravity can be calculated by dividing the product of the two masses by the square of the distance between them, then multiplying this value by the...

I'm not quite sure what this course will entail, but it sounds interesting as I've been very interested in simulations like this, albeit it is a math class (MA1600) and my question is mainly this: what exactly would a class like this entail? What are the usual languages used? I've been required...

Homework Statement I am constructing an N-body simulation in Java that will ultimately model the solar system. I am testing the reliability of it by slowly increasing the number of bodies in the simulation. So I am starting off with the Sun, Mercury and Venus. I am looking to find the...

I want a closed loop MATLAB simulation for a case study in power grid control: I'm planning to regulate the terminal voltage of a synchronous generator on overloading, by measuring the terminal voltage instantaneously, giving it to a rectifier and feeding the DC signal to the exciter (instead of...