Molecular gas dynamics simulation of turbulence: Flow over transitional SD7003 airfoil computed by the full 6-dimensional Boltzmann equation with 88 billion degrees of freedom9mo ⋅ unnecessaryellipses1 ⋅ r/CFD
[OC] Simulating the isothermal compressible Euler equations for 4 different methods8mo ⋅ pmocz ⋅ r/CFD
First successful attempt at modeling the NS equations! I'm new to CFD and numerical methods in general so I'm pretty proud of it. This is a finite difference solution to the incompressible navier-stokes equations showing velocity magnitude of flow over a box. Feedback appreciated!2yr ⋅ Ipingpong1 ⋅ r/CFD
Used SU2 and genetic algorithms to optimize my axial compressor from 83% to 86% efficiency9mo ⋅ aflofo ⋅ r/CFD
For some reason vortex shedding never gets old (naca9412 @ 45 deg alpha)3yr ⋅ Elegant-Emergency191 ⋅ r/CFD
SpaceX Merlin Nozzle OpenFOAM CFD Simulation (tutorial: https://youtu.be/03NYTBL3QDE)3yr ⋅ Elegant-Emergency191 ⋅ r/CFD
What is your favorite numerical algorithm to solve the good old incompressible Navier-Stokes equations?9mo ⋅ pmocz ⋅ r/CFD
Mach 8 optimized SCRAMjet intake at 20km altitude. Final pressure of 132Kpa@mach 3.52yr ⋅ thenerd484 ⋅ r/CFD
Turbulent kinetic energy Visualization of our rear wing, this looks not like a well designed multi-element, but why? properties are in the comments.1yr ⋅ FC-ST ⋅ r/CFD
Tesla Valve CFD Simulation (full video: https://youtu.be/4kU-qZp0bt8)3yr ⋅ Elegant-Emergency191 ⋅ r/CFD
As per the monthly theme, my recent model of the incompressible flow of air through a ducted fan, the design of which I optimised using the Nelder-Mead method.2yr ⋅ valkyriegnnir ⋅ r/CFD
Not a CFD question, but does anyone know about a repository in which you could attempt something like this? Say take a CAD model and make it go through certain models?9mo ⋅ SexyMuon ⋅ r/CFD
Is it possible to simulate both tank filling and draining to while keeping a certain water level in fluent? (Geometry as reference)2yr ⋅ EternalSeekerX ⋅ r/CFD
Is my meshing to blame for varying nusselt and friction values depending on the surface target value?2mo ⋅ un_gaucho_loco ⋅ r/CFD
I ran a CFD calculation on my Tesla’s computer, just for fun (well, the browser of my Tesla but it still counts)4yr ⋅ flying-nerd ⋅ r/CFD
~4096x4096 2D Riemann problem... (just testing some things, but maybe Useful for wallpaper)5yr ⋅ Jon3141592653589 ⋅ r/CFD
Digital Airfoil Designer 2020 screenshot of the beta version with a better interface. DAD is an airfoil editor for the wing section design. You can run your design through a Digital Wind Tunnel. Linked to Xfoil in a non-dynamic way. What do you think?3yr ⋅ AlanMattano ⋅ r/CFD
What causes these oscillations in the graph? I'm just curious. 10K iterations. CFD solve still in progress.2yr ⋅ BeepBoopNova ⋅ r/CFD
Got bored on my day off, and decided to write a script to combine my STAR-CCM+ images into a gif5yr ⋅ chaosbutters ⋅ r/CFD
At Mach 4.49, this is the Schlieren Image of TSM, a student-designed and built rocket that will be launching to space in December!3yr ⋅ masa_rockets ⋅ r/CFD
Designed a concept axial flow compressor and was wondering what is the best approach to simulating it to derive important insights such as optimal incidence, deviation, and surge margin.2yr ⋅ aflofo ⋅ r/CFD
What do you think about the evolution of the total pressure ? This is done with autodeskCFD (PS: I am an amateur)1yr ⋅ Effective_Bit4786 ⋅ r/CFD
Hello! I've been trying unsuccessfully to replicate the turbulent flow in an urban canyon based on a reference study, using Star-CCM+. I'm using the same k-epsilon model, dimensions, Re, and mesh, but getting nowhere near the desired result. The difference is evident in the U profiles below.1yr ⋅ hjsham ⋅ r/CFD
I want to build a PC with which I can play, carry out high engineering design and also carry out CFD and FEA style simulations, this is the one I have in mind but I would like to know if I should change any component or if you recommend a better one, thanks1yr ⋅ loco_mad_85 ⋅ r/CFD
what do those swirly things usually mean when looking at fluid flows (specfically hec-ras for flooding)1yr ⋅ MajesticRate1818 ⋅ r/CFD
STAR-CCM+: How to avoid such “retraction”-behaviour with Prism Layers on concave corners?1yr ⋅ bitdotben ⋅ r/CFD
I'm getting some weird air current when trying to do a multiphase simulation in fluent. Any idea what's going on?2yr ⋅ thenerd484 ⋅ r/CFD
How to make this Brake disc rotate and simulate the calipers pressing on it on ansys and get thermal data7mo ⋅ Fit_Condition_7500 ⋅ r/CFD
Can I use this PDE for a single phase model in which there is condensation/evaporation happening? i.e. should I add in an extra 'condensation' term, or can I account for the phase change in the density/heat capacity/thermal conductivity by updating the value of these parameters with respect to T?2yr ⋅ Rilandi ⋅ r/CFD
How can I make the mesh get finer towards the outside instead of the inside of the pipe? I have a temperature applied on the otter wall and want to capture the gradient1yr ⋅ mouhsinetravel ⋅ r/CFD
Is this an acceptable residual plot for an Eulerian multiphase simulation (air-CH4 gas-gas) looking at the dispersion of CH4 with different wind speeds?11mo ⋅ jimiktulu ⋅ r/CFD
I want to do a study with two different gases, one coming from the top and one from the bottom, with different velocities. can't figure out which multiphase model to use or how to assign each gas to BC!2yr ⋅ Azsnee09 ⋅ r/CFD
Hi there! I'm doing meshing with star ccm trimmed cell mesher for my formula student front wing, but it keeps appearing some weird triangles on wings' surfaces(red blocks indicate 2 pressure sides of airfoils), does anyone has any idea on it? Tia!1yr ⋅ Joshua_chen_ ⋅ r/CFD
Why won't StarCMM+ push my CPU to its maximum clock? I am running a long simulation it won't it render faster if it were to push the cores to their max clock? I did put use 14 local core for parallel; processing.6mo ⋅ ADPL34 ⋅ r/CFD
ANSYS fluent farting on me. It doesn't get passed this screen. It is a student version, and I assumed it had Fluent with it. Maybe this is a license issue? Are there any fluent alternatives that could be used to simulate supersonic nozzle flow + exhaust simulation?1yr ⋅ Active_String2216 ⋅ r/CFD
Hello, how can i plot a Cumulative Drag curve on StarCCM+ like in the picture below?3yr ⋅ Hedi325 ⋅ r/CFD
does anyone know why mesh is like this ,the submarine is hollow why mesh is generated like this ?1wk ⋅ Professional_Pie_617 ⋅ r/CFD
Guilding literatur for the numerical simulation of antique aircrafts, any recommendations?1wk ⋅ Hanfiball ⋅ r/CFD
Part 2 : What y+ is required to resolve the boundary layer? - http://bit.ly/2TJU2r35yr ⋅ madmaninabox2016 ⋅ r/CFD
Stuck at 0% at (200 iterations remaining) tried decreasing mesh size + changing cores count + using or not using gpgpu. It's a simple cfd. ethanol flowing from inlet to outlet with initial mass flow and pressure with outlet mass flow. energy equation on. trying it out with laminar flow. coupled.1yr ⋅ Active_String2216 ⋅ r/CFD
Need help,my project is regarding the cooling of a slicon disk by nanofluid ,when i tried with water in ansys fluent the temperature was reduced but when i tried with diffrent nanofluid the temp of the disk is same as the water,idk y csn anyone help me pls2yr ⋅ No_Specialist4047 ⋅ r/CFD
I am solving a simple Laplacian with 0 and 1 Dirichlet BCs on each end of a square using IPDG. The solution should be perfectly linear with no gradients as I have 0 Neuman BCs on the top and low walls. One issue is that I am getting strong gradients at the corners. This doesn't happen in CG. Fixes?1yr ⋅ wigglytails ⋅ r/CFD
Different MultiGrid solver types with how and how much work is done on grids across a heirarchy of grids.5yr ⋅ ansariddle ⋅ r/CFD
Is it normal for LBM solvers (such as XFLOW) usually take longer times to compute a solution at a mildly small 0.125m resolution scale?3yr ⋅ EternalSeekerX ⋅ r/CFD
Any guess which post processing software is used here? If Tecplot then how to get that kind of font and style?3yr ⋅ complexmechanics ⋅ r/CFD
Rotating cylinder as leading edge. How do i analyse this configuration in ANSYS? How to rotate the cylinder and analyse for various angles of attack?4yr ⋅ Vishal_m ⋅ r/CFD
NACA 4412 - AoA: 12 Degree - Velocity: 0.01m/s - Software MATLAB - Elements: 25,000 - Simulation Time: ~1min7yr ⋅ ansariddle ⋅ r/CFD
Was coding a Multi-grid for ∇•(1/rho∇p)=∇•u* (Variable density). Seeing massive speed-ups is arguably the most fun part of coding CFD.6yr ⋅ ansariddle ⋅ r/CFD
This is a mapped mesh on 2D domain where you have an inlet on the left and an outlet on the right and you are solving for fluid flow . What are the advantages of creating this mesh vs a triangular mesh from a finite volume point of view? Is it different from a finite element point of view?5yr ⋅ wigglytails ⋅ r/CFD
This might not be the right place but I am having trouble understanding what a tensor is and I think you guys can help. How can I make sense of the thermal conductivity tensor and the fact that heat flux has vector components for vector components instead of a scalar for vector components?5yr ⋅ wigglytails ⋅ r/CFD
Can someone explain the physical interpretation of both transport by convection and transport by diffusion? Or maybe explaining the difference between the two. Google is no help6yr ⋅ wigglytails ⋅ r/CFD
On the other hand, Von Neumann stability analysis; which is related to round off error and is completely unrelated to the reasoning given for this scheme; reaches the same conclusion. This feels weird. Do I have the right to feel weird?5yr ⋅ wigglytails ⋅ r/CFD
Can somebody tell me why this wing isn't affect in the model. I'm new to this and can seem to figure it out.4yr ⋅ Cheese248 ⋅ r/CFD
Repost from r/pics today. What causes the small crystals to form in the region around “T” ? Viscous effects?6yr ⋅ professorpoj ⋅ r/CFD
[Ansys Fluent] Having problema with a rectangular mesh portion on the outside of an air box5yr ⋅ Nueraman1997 ⋅ r/CFD
Now compare equation (5) with equation (2). Equation (2) assumes comprehensibility but equation (5) doesn't. Feels odd. Is there something wrong with this?5yr ⋅ wigglytails ⋅ r/CFD
This randomly generated screensaver from my linux container on android reminds me of CFD!6yr ⋅ EternalSeekerX ⋅ r/CFD
PDF of velocity in the streamwise direction - why am I getting this peak? Can't find an explanation.5yr ⋅ pepozinho ⋅ r/CFD
doing a 2D analysis but after meshing my surface gets extruded somehow is this ok or am i wrong somewhere6yr ⋅ Once-a-lurker ⋅ r/CFD
[POSTPROCESSING] I'm using fluent, I have banded contours but How To Generate This Style Of Contour Lines?5yr ⋅ crrao567 ⋅ r/CFD
[STAR-CCM+] Having trouble with these patches, everything should look like the edges not the filled solids, any ideas?5yr ⋅ Captingray ⋅ r/CFD
How do I Numerically Differentiate between Numerical Ringing (Circled) and physical Turbulence?8yr ⋅ ansariddle ⋅ r/CFD
what do the contours depict inside this nozzle, they arent shocks are they?6yr ⋅ The_GreenMachine ⋅ r/CFD
Largest DNS turbulent channel flow simulation ever, Re = 5000 [x-post from /r/engineering]11yr ⋅ IgnisDeveloper ⋅ r/CFD
Anyone know how could I give this couple equation to Ansys Fluent ??? For a surface ?5yr ⋅ PH1993 ⋅ r/CFD
