Simulation Definition and 899 Threads

Hello all, I've come in search of some information, and hopefully if possible a little bit of help. On searching the web for various ways to improve my truck in general I came across this very interesting mod that I've never once heard of in my entire life, "The Gadgetman Groove", which is a...

Actually this is more of a simulation question but since PF doesn't have Simulation category I ask here. I need to simulate a path from a proces given by this Stochastic DE: $$ dX_t = -a(X_t-1)dt+b\sqrt{X_t}dB_t $$ where ##B_t## is wiener process/brownian motion and a and b are just some...

I'm modelling a scenario for the research that I'm working on, and I got the cells and surfaces all mapped out for the environment finally, but now I'm totally stuck on creating a source. I'd like a point source of Californium-252, but after hours of looking, I don't see any out of the 1000...

Hi folks! A while ago, we discussed a real-time simulation of an oil cycle within a combustion engine. Back then I was focusing on volume flow and pressure and you were incredibly helpful in coming up with the required formulas, so thank you again for your help! I'm now moving to the next...

Hello, I'm new to electronics and I'm reading a book currently to learn more about the topic. I'm currently on a section where I'm building circuits where I'm using a transistor as a switch. I decided to experiment with the circuit they gave me and put it in a simulation software called Proteus...

hi i want to make a simple model for a light bulb for a project i am not "Mechanical and energy" specialized i just need it to avoid any thermal issues. is there a simple energy simulation for non-specialized use? thank you.

Hi all, This is my first time posting on this forum. I'm not sure if this is the right place to ask this question so apologies in advance. Perhaps someone could recommend a more appropriate forum for me to post this on. I'm working on creating documentation for a simulation. It's an Apollo...

Hi guys, I'm wanting to simulate faraday cage form, analysing mesh perforations defined by wavelengths of different electromagnetic spectra (eg. radio, microwave, UV etc). Are there any good analysis softwares which I could import a pre-made digital model with these perforations and simulate...

Now, we all know all physical things are related to math. EVERYTHING is related to math. Now, we have all heard the theory that we are all living in a simulation, right? What if... math is the coding of the simulation and throughout time we have been decoding our own simulation.

I am looking to try some design ideas using PMs for alternator design. I am a retired EE so I do not have corporate capital for simulation software. Does anyone know of low to medium cost simulation software that might be workable for basic flux/emf/etc calculations and modeling? Or other...

I would like to know where it would be possible to download a 3d simulation software tha twould operate according mathematical pharameters

Homework Statement I am supposed to make a project based on this simulation, I am trying to see what is happening: https://phet.colorado.edu/en/simulation/faraday If I go to the "Transformer" tab, I have an electromagnet and a circuit consisting of a loop of wire and a light bulb. I can...

Hello! I'm trying to write a 2D program that uses simple physics. I was wondering what would be the best 2D physics engine to use in my case, and if it even matter what engine I choose. I also want my simulation to run in real time, so at least 30 fps on a decent home computer. I prefer a fast...

Hello, below is the screenshot from the book INTRODUCTION TO MODERN DIGITAL HOLOGRAPHY With MATLAB (TING-CHUNG POON, JUNG-PING LIU). This book is free to download. There is a script for Fraunhofer diffraction pattern and equation 1.40 is Fraunhofer diffraction formula in terms of Fourier...

Hello all, I am a new member of this forum, I would like to know where can i find the detailed tutorial of magneto static simulation of C-core. I am in the middle of one project and for further move I need the magneto static simulation of C-core. The image is attached.

Hello Physics Forums! After almost a year of haggling and research, I think I have successfully made a engine simulation spreadsheet! :oldbiggrin: I have simulated the Nissan KA24DE Engine with two different cam profiles: As far as I'm concerned, there is still a lot of work to be done...

I am using Ansys 18.2 Maxwell 2D to analyze a transformer by using transient and magnetostatic solvers. Normally the analyses were completed correctly and took time like a half an our . But right now the simulations are comleted suddenly(in few seccond) and there is no error no result and no...

mod: approved HexSim Life History Simulation Modeling Platform - free to download. Landscape ecology, anyone? After >10 years of development, the HexSim life history simulator is ready for use by students and researchers.HexSim is a free, versatile, multi-species, life history simulator ideal...

Hoping to get some help on a stability analysis of this setup...

Consider the weak form Input this equation in COMSOL Homework EquationsThe Attempt at a Solution test(ux) -exp(x)*test(u)

I have tried to simulate the Vickers hardness on a substrate with a coating on it. I am really struggling to get it to work as the deformation is far too big. I have added the pictures of my model. Is there anyone that can help me with this?

Hi, anyone using COMSOL? I'm new to this program and I'm trying to get a plot of the pressure distribution on a cut-plane of a cube. I have applied a boundary load of 4 MPa to the upper surface of the cube and fixed constraint to the bottom surface of the cube. Now, as a check, when plotting...

Hello everybody! For my water in nanoscaled-pores simulations with SPH I need a value for the characteristic velocity. My planned approach is to estimate this value by attaining the propagation speed of a diffusion wave. But I have problems with understanding this process since I find some...

I am making a physics simulator and this problem is tricky. You have two freely moving objects with known masses and velocities in a frictionless environment. The first object is a ball and the second is a pipe. They are moving toward each other. I need to know what formulas are used to simulate...

I was thinking about Newton's Cradle the other day, and I wondered how those collisions actually look like in detail. Which then got me thinking that my understanding of even a basic elastic collision of two macroscopic objects is weak to say the least. Simplified, the two objects could be two...

I need to simulate the Friedman equations under different conditions of flat space. Can someone please tell me a good package in MATLAB, Mathematica or stand alone. I am most well versed in MATLAB but have coded in Mathematica before.

I am trying to simulate concrete material under three-point bending in Ansys Workbench 16.0. The concrete beam (unnotched) will be under displacement load at the center while as the both ends will be fixed. The design geometry is simple which I have already completed. I ran the simulation using...

I am doing the dynamic process of a water droplet impinging onto a wax substrate in COMSOL, using the Phase Field method for tracking the free surface. I am able to do the simulation for Static Contact Angle(SCA) i.e i am imposing a fixed contact angle throughout the time step in wetted wall...

Hello! I am implementing the three body restricted problem numerically (2 of them are massive and the 3rd one is not affecting them, so it is just moving in the potential created by them). I implemented it and if I put the 3rd one close to one of the big ones it moves in circles around it, while...

I just have a simple question to ask. I'm simulating an instrumentation amplifier and then testing it practically. When I simulate it, my gain is 6, but when I test it, I get a gain of 5.54. I'm just wondering what is causing the slight drop in gain in the practical results?

This is a pannable simulation that will run in your browser. It shows where Pioneer 10 & 11, Voyager 1 & 2, New Horizons and ʻOumuamua are, how far they are from the Sun, and their speeds. simulation: http://orbitsimulator.com/gravitySimulatorCloud/simulations/1511746688216_hyperbolic.html...

Hi all, I'm doing a bit of material science research at my university. I'm running molecular dynamics simulation programs like Lammps and Amber as part of it, and I'm pretty new to the whole thing (just like I'm pretty new to this forum). I'd like to ask, has anyone here used Amber to find their...

Hello, I've been asked to talk about a time where I have used quantitative analysis. I once used simulation of the solar system to find out more about things like close approaches, and Gladmans criteria I was wondering if simulation is considered a quantitative method of analysis and if the...

It seems like every argument in favor of the Simulation Hypothesis revolves around the strangeness of Quantum Mechanics. So can the Simulation Interpretation be just as valid of an interpretation as Copenhagen or Many Worlds? If not why not?

1. Homework Statement Question 1: given a rigid tetrahedron, with vertices A, B, C and D anchored to their initial locations with an arbitrary but uniform spring constant, will Cases 1, 2, and 3 below result in the same behavior of the system? - Case 1: a force of constant magnitude (red...

Hi there I am really new into programiing thing, and I am trying to make program of this problem usin FORTRAN I want the output to be Time,poisiton,velocity and contact force and i already know = amplitude U = velocity of the car d = rail distance and so far this is my program...

I am trying to write code for analytical solution of 1D heat conduction equation in semi-infinite rod. The analytical solution is given by Carslaw and Jaeger 1959 (p305) as $$ h(x,t) = \Delta H .erfc( \frac{x}{2 \sqrt[]{vt} } ) $$ where x is distance, v is diffusivity (material property) and t...

Hi All, Sorry for the vagueness of the post; I promised privacy to a friend who just obtained a patent. She asked me to find a way of testing the product. Since I have no access of any sort to a lab, I am considering doing Mathematical simulations. I wonder if anyone knows about this and/or has...

Today's APOD https://apod.nasa.gov/apod/ap171031.html shows a simulation picture of the developing universe involving galaxy formations and dark matter thin threads. I am wondering if any PF participant can answer the following questions: 1. Why does dark matter form thin thread structures...

I want to make a interactive simulation that shows whether or not an asteroid will hit the surface of the Earth. It would have 2 sliders for you to control the speed and mass of the asteroid. The simulation will output "yes" or "no" if the asteroid hits the surface. Is there a mathematical...

I have created a savonius turbine model with 2 blades using 3D gambit. I want to simulate the flow of air flowing so as to drive the turbine savonius spin (unsteady, incompressible). Geometry consists of 3 volume boxes (domain tunnel flow), cylinder (domain grid interface), blade savonius...

simulation doesn't seem to be progressing. always stuck at this stage, see progress bar. any ideas how to solve? thanks! (btw I am trying to simulate it to get results of inductance for the copper coil)

1. The problem statement, all variables, and given/known data I am currently drafting a proposal for a project in Computational Physics. I'm planning on creating a program that simulates circuits numerically instead of solving the system of equations. The purpose of my project is to observe the...

I have read differing arguments about the potential utility or negative issues arising due to AI. There are many concerns about the 'control problem' of AI or how to 'sandbox' AI so it can serve our interests and not let a fast takeoff of AI lead to a situation where AI is the sole power around...

Hi everyone, I am currently doing my Computer Science A-Level project and I'm thinking of simulating a wind tunnel but I am also having a really hard time figuring out how to start. I am programming it in Visual Basic (XNA) and using Blender for models. Could anyone guide me in the right...

We know that a computer can simulate phenomena. Is it possible to simulate the same phenomena partially on different computers simultaneously? For example, Computer 1 simulates the front of a statue. Computer 2 simulates the back of a statue. Computer 3 simulates the birds eye view of a statue...

Homework Statement The number of busy lines in a trunk group (Erlang system) is given by a truncated Poisson distribution. I am asked to generate values from this distribution by applying the Metropolis-Hastings algorithm. Homework Equations The distribution is given in the attached picture...

Dear all, I've been working on an ionic liquid that I was involved in simulating with Lammps, but when I started to write its paper, I found a mistake (or a neglect) that makes almost all the results useless. I would always compare the pVT simulation data with the corresponding experimental data...

Good day folks! I am working on the simulation of an engine, and in particular the oil system makes my head ache. I already finished the calculations for viscosity and temperature, but now I'm stuck on coming up with formulas for pressure and flow rates. With what should I start? For...

Hi, I am looking to simulate a very - seemingly - simple case. Any advice on a software package would be helpful - preferably gui which doesn't have a steep learning curve. I want to model the heat flux into a sphere from the outside. The dimensions of the sphere are not important to me. I...