Simulation Definition and 816 Threads

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...

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...

Homework Statement I am creating an astrophysical simulation involving an arbritary number of particles and each particle is identified via a mass, label, position vector and velocity vector. I have made classes which can perform operations on these vectors and I also have a class which...

Are there any cool simulations of an object traveling into a black hole from the objects point of view? Thanks.

I am simulating an unshielded twisted wire pair of a communication network, Controller Area Network. Bus Speeds taken into consideration are 250/500/1000/2000 kbps. Depending on the physical dimensions of the wire and insulation dielectric constant, I have computed the R,L,C,G parameters...

Hello there, I have been searching for MATLAB simulations that analyze optical cavities and there are some useful codes. Yet, I haven't found codes that analyze what happens to cavit transverse modes if spatially dependent phase is introduced between mirrors Does anybody know if there...

Hello fellow physicists, I have a query about a practical matter. I'm trying to simulate the rotational spectrum of a symmetric top and so far I've been able to produce a stick spectrum of it. My first problem is that the lines do not exactly match the positions of the peaks but my biggest...

i believe I'm using the correct equations, but the orbit won't work. here is the relevant code for a 2 particle simple orbit simulation. I'm not sure what I'm doing wrong ... timeStep = 1.0 gravityConstant = 6.67384 * 10.0 ^ -11.0 ... // (initialize particles) // p[n].m: mass, p[n].x...

Homework Statement I am designing a physics simulation that models two balls colliding along a straight line path. I can change the coefficient of restitution, the initial velocities, and their masses. THe assignment asks that we vary at least three parameters, so in my case, the three are...

I do not quite get the argument that the GZK-Cutoff hints at the fact, that all of our universe is a Simulation. How does the fact, that according to the work of Silas R. Beane, Zohreh Davoudi und Martin J. Savage our reality has limits comparable to the resolution limits of a computer monitor...

I have a project where I need to simulate the magnetic forces with ANSYS. I'm and intermediate ANSYS user but I have really only worked with APDL, and if possible I would like to do it in the GUI. So my problem is that I have only ever done structural and thermal models in ANSYS. I am...

I would like to simulate the Physical Layer of the Controller Area Network(ISO 11898) to evaluate the performance of the system under varying conditions(Temperature, Twists/turn, Length, Termination type, Unfitting Node Terminations, Interconnections, Splices, Unbalanced Loading etc.) I will be...

Homework Statement I need to develop a macroscopic gravity simulation software. I have problems with representing vectors in a programming language (c++), because I need do develop my own mathematical infrastructure for the project. I asked for the Cartesian coordinates, but would also have...

Is there any software for simulating physical phenomena? I've googled it and found one named Physion. It is great for fun but is too limited. Would programming be the only way or is there some ready-made program that could provide an easy environment to develop simulations.

Hello, I'm learning digital logic and design, I was told that I should use Quartus II, which so far works very well for me. Unfortunately, I noticed that simulating was eliminated on recent versions of Quartus II on the web edition. So, while new versions are better and I still prefer the...

Hello all, Background I've been playing with computer simulations quite a bit recently, and wrote one that crudely simulates the formation of star systems. My first version was a conventional many body simulation with about 300 small bodies; it actually tends to come up with convincing star...

Hello! I am having trouble using the SimPowerSystems library from simulink to simulate circuits (with the powergui solver). On all the circuits I have simulated so far either of the following happens: - Adding the initial current/voltage directly at the RLC branch block culminates into...

I have a twist for politics, and I wanted to explore some numerical simulations to compare government types and effectiveness in the use of available resources. I thinked about agent-base simulation, and later found (on Wikipedia) that this type of simulation is fairly common in treating...

I've tried out the two body problem and tried to work out the trajectories with respect to their center of mass frame(located at the origin) as follows (it worked!:smile:): particles = m1 and m2 Fm1 = force of m2 on m1 Fm2 = force of m1 on m2 a = Gm2\hat{r} / r2 \hat{r} is the unit vector...

I am doing an assignment for college, (though my question is more general, rather than based on questions I have been set, hence the reason this post not being in the homework forum). It is basic DC circuit analysis using, Kirchhoff, Thevenin and Norton theorems. Nothing taxing, so I know my...

EDIT: I'm not in my sharpest moment. I just found a bunch of posts that discuss this. I'll read them and update this post if I find an answer. I'm working on a hard-sphere MC simulation (for a class). I want to compute the radial distribution function g(r). To put you in context, as to my...

Homework Statement I'm trying to simulate the following circuit in OrCAD PSPICE. Homework Equations The Attempt at a Solution * 8.20 Vdd 1 0 5V MP1 3 2 1 1 PMOD MN1 3 2 0 0 NMOD MP2 4 3 1 1 PMOD MN2 4 3 0 0 NMOD R1 3 2 1000 C1 2 4 1uF .MODEL...

I was wondering if anyone knows of such a website or program whereby I can type a speed I would like to travel, and it will allow me to travel around the Earth or through the universe at that speed? Nothing like a flight simulator but just something that will allow me to control the speed the...

I'm currently working on a project for a code that does umbrella sampling of a 2-D Ising model [size LxL of a magnet (analyzing up or down spins)]. The next step is to take my code to analyze a nucleation region and its growth by varying the temperature above critical. Before I even attempt to...

The Canadian national men's curling competition (the Briar) is going on this weekend and I am motivated to write a computer program to simulate the motion of the rocks on the ice. I see on TV that the rectangular rink 14 by 126 feet appears to be trapezoidal on the screen, with the front about...

Hi I am working on a project at the moment and I was wondering if there is any circuit simulator that includes the PIC 18F4550 microcontroller. I currently use Crocodile Technology and I have tried editing the code to get the chip to just appear (I don't need it to do anything just sit there so...

Any suggestion or hints for any software that helps in Frequency Planning for Communication networks... please give links! thank you all.

Author: Mark Tuckerman Title: Statistical Mechanics: Theory and Molecular Simulation Amazon Link: https://www.amazon.com/dp/0198525265/?tag=pfamazon01-20

Hello, I have a little three-body (well n-body but let's just worry about 3 now) simulator. I input six Keplerian orbital elements (period P, eccentricity E, inclination I, longitude of the ascending node W, argument of periapse w and initial true anomaly f). They then get converted to...

Homework Statement Hi in response to my previous thread (principles behind the waveform selector circuit), I would now like to run a SPICE simulation using the PSPICE schematics software to obtain the theoretical values before entering my lab session. I have uploaded the schematic for your...

Homework Statement As the title says, I am trying to implement two differential equations into Simulink. I don't know how to start. How do I know what to start with, which block goes where? when do I add something and when do I know to subtract something using the sum block. When I got my...

Hello, I am a student from Germany and I stared my first project using ANSOFT Maxwell. I have read several tutorials and have a few questions how to simulate my problem. Hope I can find some help here. First my problem: I have two identical magnetic disks. These disks are so positioned...

Hi all. I have been working, off and on, on a Solar System simulator (in MS Excel) for many months. I am using the Runge-Kutta-Fehlberg 8/9 8th-order integrator and JPL's initial conditions to try to reproduce an accurate model of planetary motions. This, of course, involves modeling the...