Simulation Definition and 899 Threads

Homework Statement Upthrow simulation Conditions: initial velocity v=10m/s, initial height h=0m when t=0. Gravity acceleration g=10m/s2 . Using Simulink to simulate the variation of height with time when t≥0. Homework Equations I figured that the governing equation should be: Height =...

i am doing a project on effect of high voltage transmission on human. here, i am facing problem in assigning current excitation to power cable in ansys maxwell. whenever i assign current excitation i get an error message " no conduction path found". please, someone help me in this matter.

Hey all, I'm making a physics simulation for training an algorithm of mine, I'm running into issues on the rigid body physics simulation. Let's say I have a leg composed of a calf and a thigh. gravity will be acting on both, and the calf is attached to the thigh, Any suggestions on how I would...

Hi Guys, I am working on a design trying to control a model through inverted V-tail/ruddervators only. No aileron or horizontal stabilizer. Do you think it is possible as apparently I am facing instability issues. Any guidance in this regard would be helpful. Thanks

Particularly, I mean trained skills rather than traits. For example, for a blank student/graduate who knows only physics theory, learning LaTeX would put them a little bit ahead. Then maybe some programming, learning simulation software etc. I'm finishing up my 2nd year in undergraduate right...

I am running a simulation on a flat plate heat exchanger and the solver is coming up with some error messages. The first says that a vortex crosses the pressure opening and the second says that my heat transfer rate goals are invalid. How can I get the heat transfer goals to be valid as I need...

Hello all, i need your help. And thank you forward for those who will. Im looking for a computer program, that would simulate physic...most important would be simulation of magnetism , gravity and mass. Simple form of what i am looking for: Make cube in 3D world, set its mass, set its material...

Hi All, I'm studying physics by myself and would like a recommendation for a physics simulation software I can play with. Something I can play around with the variables and see what happens. Suggestions? Andre

I have a made a fully functional n-body simulation for a project in high school, written in Java. Right now, to "simulate" the solar system, I am simply spawning the different bodies at their respective distance from the sun with an initial velocity calculated by v = sqrt(G*M/r), as shown in...

A warm greeting to all reputed members of physicsforum.com. I'm an undergraduate student. I'm trying to create a mathematical model for calculation of force of interaction between two identical bar magnets and force of interaction between a magnet and a steel disc. If I go with standard formulae...

I'm new with ansys if I can help it would be helpful. the problem is that two solids are shocked, but one of them is going through the other, have already implemented several things different tutorials but the answer is the same. the only question when I change the location fixed support the...

Hello, just for some basic understanding I wrote a (1D) numerical simulation to investigate the internal mechanics of collision impact in different materials. For a start I work with a really simple model which consists of: - basic elements (circles of fixed radius and mass and their current...

Urgent help required! I need to simulate a rolling non-rigid tyre on a ground with obstacle(s). How should i proceed with ansys 14.5? Any help will be deeply appreciated.

I have to make a shielding calculation of some radioactive scrap metal in a cask, using Geant4 (hence Monte-Carlo). I will be given a nuclide vector and I'll have to calculate the ambient dose equivalent rate outside of the cask. The nuclide vector I will be given will be something like: Co60...

Hello Engineers, while simulating transformer core losses in transient Maxwell sollution, I have got an error: Current leak to the air. does anyone ahev idea to solve this problem Thank you

Hi all, I was wondering if anyone uses simulation software's to tackle the heat related issues in electrical/mechanical engineering? Regards

Hello everybody, nowadays I am working on shaping amlifiers and need guidiance about how to design one and do its simulations before pcb design and manufacturing. When googling about shaping amplifiers i found documents mostly about filters (active and passive), which i know works for rejecting...

Hi all: In my free time, I've been playing with creating a code to help do toy simulations of gravity in my personal code of choice, FORTRAN. The first step was to get Newtonian gravity up and running and this has been pretty successful so far and I've been able to implement about 4 different...

Hello. I know a bit of programming, python, C and I tried once the processing language. I'd like to make, sometimes, some simulation on mechanics, with gravity, collisions, springs, ecc... But I have not very much time to spend in creating these things (supposing I could), so I would like to...

Hi, I have used Digital Works and Logisim for doing things like building memory cells out of logic gates and general study of sequential logic. The free version of Digital Works does not work on my 64 bit windows computer at work, and Logisim does not offer all of the features of Digital Works...

Hi, I wrote a simulation of lock in amplifier using Matlab and now i want to test it for different SNR. I added to the signal white gaussian noise. In all the spec that i read, always written that the lock in amplifier can handle -100dB of noise. When I add a noise of SNR=-30dB the lock in...

Recently I created a structural vibrations simulation and would like to hear some feedback or suggestions.

hello! is there any freeware simulation software for automotive engineering? thanks!

Dear Members, I've got a problem with following problem. I have build my first algorithm for Metropolis Monte Carlo. Now I am in a testing phase and one of my bosses ask me for autocorrelation function of my system. I find something in literature, but I am not sure exactly what the...

The importance of modeling and simulation for understanding physics is a central question of didactics. System dynamics is a promising method to achieve this goal. This method is applied at the Zurich University for Applied Sciences (ZHAW...

Hello Guys! I'm Phillip John R. Endrinal. I am from The Phillipines and i am taking a Degree in bachelors of Computer Science. Im taking my thesis this semester but I am having trouble in defining my title. My thesis title is "3D Based Simulation Model: Dynamics in Physics for Educational...

I'm a first year physics student, and one of my assignment for my programming class is about percolation. I need to create some disks randomly distributed in an area (this is a 2-D), and then by varying the density of the disk, I need to figure out the percolation threshold such that the two...

I remember, a year or two ago, reading about a group which were simulating the early times of Earth's creation and they wanted to see whether life naturally pops out in it. But now I can't find it again or any other news from that group. Does anyone know about such a simulation?

http://wilmott.com/i/dominant/block.gif I have worked with generation of transition probabilities of mean reverting CEV type stochastic differential equations using Girsanov theorem. A variable grid is generated and Transition probabilities are calculated from the well known analytic...

Hello! I need to build an electromagnet for my DIY project. But I have a problem with choosing right configuration. But I have not found any open-source or student-license software for this goal... It would be great if someone could post some links to that kind of software.

Homework Statement 1. The first part of the problem was to find a transfer function. Output is the displacement of the mass (mass of pinion is negligible) 2.The next thing to do was find the poles, which I believe means set the denominator=0 and solve for s. 3. The next thing to do was find...

What am I trying to do? I'm trying to implement a simulation of a chaotic billiard system, following the algorithm in this excerpt. How am I trying it? Using numpy and matplotlib, I implemented the following code What is the problem? When calculating phi_new, the equation has two solutions...

Hi all, I have to estimate a photocurrent produced in the following simulation setup. Photodiode (detector) and LED (spaced 2cm) lie on one axis, oriented toward a wall (radiometer film) which is parallel to the axis and at a distance of about 10cm from the axis. How much photocurrent would an...

Hello! I am a student of electrical engineering. I got assigned to a project where I need to simulate a coil in Maxwell 15 and a ball which floats in the magnetic field of the coil. This is for an experiment for demonstrating magnetsim, so my task is to find out what dimensions the coil needs...

Hi all! I would be interested in paints that show very high absorptivity/emissivity and that can withstand high temperatures (ideally above 1000°C) and used in vacuum. Do you have any commercial suggestions? Thank you!

Homework Statement I'm trying to create a simple excel simulation for runaway electrons using a given energy-loss per unit distance equation (Bethe formula). I'm stepping through time (pico-seconds) and giving the the electric field some initial value at a distance of 1mm and from there...

Hi every one, I am a fluent user, & I need help to illustrate something concerning the mass flow inlet. when I want to inject a gas ''for example" I want then to change the parameters from normal on the shape into leaded by a 'direction vector', so I choose direction vector instead of...

Is it possible,at least theoretically, to take digitised DNA and produce a computer simulation of the organism that it came from?

Homework Statement I'm setting up an experiment for a simulation. I'm not sure how to formulate the hypothesis. The model used in the simulation is the first iteration, so I'm just using 2 attributes, 1 independent (A) and 1 dependent (B). As a result, I need to state explicitly that this model...

Is there any simulation software for Balsa Bridge ?

Some of the social sciences suffer from "physics envy". This malady causes educators to inject an unnecssary amount of mathematics into the curriculum as a way of gaining scientific letgitimacy. Sadly for most undergrads, the math actually gets in the way. I wrote a paper in which I describe the...

I have a question regarding LQC that I can't find anywhere, and since most of the relevant answers to similar questions are here I may as well ask, here... For a simple background, when I was introduced to the big rip and combined that with the big bang, I immediately thought the two co-existed...

Hi guys, I am very interested in modelling and simulation as a part of a bachelor physics course. So I am searching for a physics course, as a part of 1st year bachelor study, where you do very much modelling and simulation. Can you name me some universities or universities of applied sciences...

hello every one i want too simulate a coil with with Maxwell and transient solution type: this coil is in a paper and i want to simulate it i attach the coil properties. in this paper the dimension of coil is given such: diameret:12cm; length=84cm; moment=30a-m^2; construction= 16 turns...

Hello. This is not homework, so I am posting this here because I feel this is the right place to do so. How do I find charges Q1, Q2 and Q3? The answers are given as follow: Q1 = Q3 (This is due to the symmetrical arrangement) = 6.97 x 10^-11 [C] Q2 = 1.44 x 10^-11 [C] I really...

Hi all, can anyone recommend a good software to help in design and simulation of PCB traces, matching circuits, and microstrip lines. Thank you.

http://www.falstad.com/qm1d/ is a really good way of getting a feel for the dynamics of a single particle in a variety of potential wells. Does anyone know of an equivalent (hopefully free) program for multi-particle systems? Dustin Soodak

What is the best simulation software that allows for user input of variables and covers the widest range of physics topics. I.e. from introductory mechanics all the way to particle physics. If there is even any such software out there. Thank you!

is there a numerical method to determine whether two bodies will stay bounded forever in an n body simulation? i know if the energy of a particle orbitting the origin is negative, then it is bounded, where -∫(force)dr+(dr/dt)2/2=energy. but I am curious about a genereral case, where there are...

Hello everyone, I would like to get ~200 MeV quasi-monoenergetic electron beam by doing 2D Particle-In-Cell simulation in bubble regime. The moving window dimension is 50x50 μm for x and y, the simulation mesh size is set 0.04x0.4 μm, each mesh includes 10 particles, laser wavelength is 800 nm...