Uploaded August 2016 | Updated September 2026, 2 weeks ago
Die Erde hat einen zweiten Mond, "2016 HO3" wird er bezeichnet. Er ist sehr weit außen, 70 Mal so weit wie der Erdmond. Er ist auch sehr klein, nur ca. 70 Meter im Durchmesser, und deshalb nicht einmal mit einem Amateurteleskop sichtbar. Aber es gibt ihn, das hat die NASA bestätigt, und er umkreist die Erde, was ihn zu einem Mond macht. Aufgrund der großen Distanz zur Erde ist seine Umlaufbahn jedoch nicht stabil, sodass er diese in etwa 325 Jahren verlassen wird und zum Erdtrabanten in einer Hufeisenumlaufbahn wird. Klingt komisch, ist es auch. Ich hab’s genauer unter die Lupe genommen und seine Bahn für die nächsten 1300 Jahre vorausberechnet.
Mehr Informationen auf: projectphysx.de
Songs:
M83 – Outro
M83 – Fearful Odds
M83 – Oblivion
Die Erde hat einen zweiten Mond, "2016 HO3" wird er bezeichnet. Er ist sehr weit außen, 70 Mal so weit wie der Erdmond. Er ist auch sehr klein, nur ca. 70 Meter im Durchmesser, und deshalb nicht einmal mit einem Amateurteleskop sichtbar. Aber es gibt ihn, das hat die NASA bestätigt, und er umkreist die Erde, was ihn zu einem Mond macht. Aufgrund der großen Distanz zur Erde ist seine Umlaufbahn jedoch nicht stabil, sodass er diese in etwa 325 Jahren verlassen wird und zum Erdtrabanten in einer Hufeisenumlaufbahn wird. Klingt komisch, ist es auch. Ich hab’s genauer unter die Lupe genommen und seine Bahn für die nächsten 1300 Jahre vorausberechnet.
Mehr Informationen auf: projectphysx.de
Songs:
M83 – Outro
M83 – Fearful Odds
M83 – Oblivion

![FluidX3D [FLUID SIMULATION] Real Time Prototype Demo
Simulating a liquid is usually reserved for supercomputers. However, in the last few years, the amount of calculating power provided by consumer graphics cards skyrocketed to the point where well optimized code today can result in a successful real time simulation. As a rule of thumb, one GPU is about as fast as 100 multi-core CPUs for well parallelizable code.
This is an optimized OpenCL implementation of the barebones Lattice Boltzmann Method (LBM) in its simplest 3D form with the D3Q15 velocity set, optimized to run parallelized on the GPU.
All the shown demos run in real time on an old laptop GPU (GTX 960M with 640 CUDA cores @1200MHz).
The blue curves represent integrated streamlines through the velocity field, which itself is updated by the GPU approximately 50 times per second.
The maximum lattice size is limited by the amount of VRAM to 256x256x256, at which the program fills 2.6GB of graphics memory.
For more information about FluidX3D and my other projects, visit
http://www.projectphysx.de
Music: Death & Rebirth - Lotus Eater FluidX3D [FLUID SIMULATION] Real Time Prototype Demo](https://i.ytimg.com/vi/Vv-ZoJudJq0/mqdefault.jpg)


![PhysX3D [GRAVITY SIMULATION] Galaxy fly-through + Blooming Effekt demo
Recently I have improved the blooming effect in terms of performance by about two magnutudes.
Blooming is a rendering effect which makes the otherwise black space between close pixels brighter. It is a post-processing effect, meaning the completely rendered frame is being edited as an image right before being drawn on the screen.
The improvement that I implemented was instead of going through the frame pixel by pixel and checking the surrounding of each pixel, at first to scan the frame for all non-black pixels and to save their positions, so the algorithm only has to iterate through the amount of drawn pixels instead of the whole frame.
More information at: http://www.projectphysx.de
Music: Puddle of Infinity - Open Sea Morning PhysX3D [GRAVITY SIMULATION] Galaxy fly-through + Blooming Effekt demo](https://i.ytimg.com/vi/WbbjvGIfqdc/mqdefault.jpg)




![Simulating terminal velocity raindrop impacts with FluidX3D at Reynolds number 51k
Simulating raindrop impacts is particularly challenging for CFD software, because the Reynolds number Re=d*u/nu is very high and for such turbulent flow many solvers become unstable. With D3Q19 and the SRT collision operator, the LBM solver FluidX3D is still stable at Re=51k despite the free surface extension, enabling proper raindrop impact simulations without cheating on the viscosity.
References for simulation parameters:
[1] https://www.researchgate.net/publication/256687896_Effects_of_Altitude_on_Maximum_Raindrop_Size_and_Fall_Velocity_as_Limited_by_Collisional_Breakup
[2] https://www.engineersedge.com/physics/water density_viscosity_specific_weight_13146.htm
FluidX3D is a real time 3D fluid simulation based on the lattice Boltzmann method. It is written in OpenCL C (GPU code) and optimized to the physical limit (video memory bandwith, ~520GB/s).
All demonstrations are simulated and visualized on a Nvidia Titan Xp. Compute time of all simulations combined was about 15 minutes. Graphics are done with the OpenCL C version of Line3D, the fastest graphics engine ever written for primitive shapes like lines, dots and circles. It can handle up to 2 billion lines per second.
The free surface is done with the volume-of-fluid (VoF) extension to LBM. It allows simulating free surfaces with a sharp interface layer.
The volume force (gavity) is implemented with the Gou forcing scheme.
Visualization of the surface is done with the marching cubes algorithm (implemented in OpenCL C).
http://paulbourke.net/geometry/polygonise/
Hardware Setup:
CPU: Intel Core i7-8700K @ 4.5GHz all core
GPU: Nvidia Titan Xp
RAM: 2x8GB Corsair Vengeance LPX DDR4 3200MHz CL16
Mainboard: ASUS ROG STRIX Z370-I GAMING
SSD 1: Samsung 970 PRO 512GB
SSD 2: Samsung 860 EVO 1TB
CPU Cooler: Cooltek LP53
PSU: Corsair SF600
Housing: Fractal Design Node 202
Timestamps:
0:00 - Intro
0:06 - 1 mm drop size
0:13 - 2 mm drop size
0:21 - 3 mm drop size
0:28 - 4 mm drop size
0:36 - 5 mm drop size
0:43 - 6 mm drop size
0:51 - 7 mm drop size
More information at http://www.projectphysx.de Simulating terminal velocity raindrop impacts with FluidX3D at Reynolds number 51k](https://i.ytimg.com/vi/ZxMQnUX9fjw/mqdefault.jpg)
