simulation engines

The seventh episode of SOVIET.KSP, a series playing the space program simulator Kerbal Space Program with the RP-1 realistic progression mod, is built around the need to design a larger launch vehicle to continue an alternate-history Soviet space program. Viewers are engaging with the episode's engineering challenges and the creator's rocket designs, keeping the long-running series popular with the game's community.

Bentley says its upcoming electric cars will use orchestra recordings to simulate the deep sound of its classic V8 engines, aiming to preserve the brand's signature character as it moves away from combustion. The luxury automaker, which has committed to an all-electric lineup, is turning to musical instruments rather than synthesized engine noise to craft a distinctive sound for drivers.

A research team has used quantum computing to perform FLiBe chemistry calculations, according to the American Nuclear Society. FLiBe, a molten fluoride salt mixture of lithium and beryllium, is a leading coolant and fuel carrier for molten salt reactor designs. Accurate predictions of its chemical behavior are difficult for classical computers, making the work a notable step toward applying quantum methods to nuclear reactor design and simulation.

Zenithon AI is presenting itself as a startup working on simulating extreme physics up to a million times faster than existing methods. The company appears in startup database listings, but little verified detail is available about its technology, funding, or team. The claim of such a large speed increase in physics simulation would, if proven, be significant for engineering and scientific research.

Discussion is swirling around OpenRadioss, the open-source crash and structural simulation solver, with claims that it is 'not open anymore'. The conversation links to a Siemens product page for Radioss, prompting debate about the project's licensing and future under corporate ownership. Commenters are questioning what the change means for users of the free solver.

Box2D author Erin Catto has published a technical write-up on accelerating the separating axis test, a core algorithm in physics engines, by using inscribed spheres. The post walks through how the geometric optimization reduces the work needed to detect overlaps between shapes, an operation run millions of times per frame in games and simulations.

Video game simulation engines are increasingly viewed as dual technologies, with uses stretching beyond entertainment into defence training, industrial modelling and research. The discussion, highlighted in an analysis by Polytechnique Insights, examines how engines originally built for gaming now power serious applications, raising questions about their strategic and commercial value.

A new installment of Project SkySim details how a single physics core can be run in three different modes, part of an ongoing series on building a simulation system. The article walks through the engineering choices behind keeping one shared physics implementation while supporting multiple execution paths, an approach aimed at flexibility and easier maintenance in simulation software.

A newly circulated paper recounts how Los Alamos scientists turned to the Eniac in 1947–1948 to run some of the earliest Monte Carlo simulations, using the pioneering computer to model nuclear processes through random sampling. The episode is widely seen as a founding moment of computational science, showing how wartime computing hardware was repurposed for peacetime physics research and helped establish a technique now used across finance, engineering and beyond.

Digital twin technology is being developed to improve the safety of ammonia-fueled vessels. Ammonia is seen as a promising zero-carbon shipping fuel, but it is toxic and requires careful handling. Digital twins, virtual models that simulate real-world vessel behavior, can help engineers test safety scenarios and predict risks before ships are built or operated, supporting the maritime industry's decarbonization efforts.

Researchers have introduced a new quantum algorithm aimed at a key bottleneck in fluid-flow modeling, a computationally intensive problem in physics and engineering. The development suggests quantum computing could eventually speed up simulations of turbulence and fluid dynamics that strain classical supercomputers. Details on the team behind it and practical timelines remain limited.

The fourth instalment in a physics programming series is out, this time focusing on the physics update loop — the core step in game engines where forces, collisions and movement are advanced at a fixed rate. It continues a series that has been walking developers through the basics of simulating physics in their own code.