We evaluated the performance of OpenFOAMGPT (GPT for generative pretrained transformers), which includes rating multiple large-language models. Some of the present models efficiently manage different computational fluid dynamics (CFD) tasks, such as adjusting boundary conditions, turbulence models, and solver configurations, although their token cost and stability vary. Locally deployed smaller models such as the QwQ-32B (Q4 KM quantized model) struggled with generating valid solver files for complex processes. Zero-shot prompts commonly fail in simulations with intricate settings, even for large models. Challenges with boundary conditions and solver keywords stress the need for expert supervision, indicating that further development is needed to fully automate specialized CFD simulations.
| • | ChatGPT-4o is a general-purpose multimodal LLM developed by OpenAI. Trained on a diverse range of internet text, it maintains advanced language understanding and generation capabilities across domains. |
| • | OpenAI o1 is the first reasoning model leveraging a chain-of-thought (CoT) mechanism, enabling superior performance over GPT-4o in complex reasoning, scientific analyses, and programming tasks. |
| • | DeepSeek V3 (671B) is the third-generation LLM from DeepSeek AI and is offered as an open-source alternative to high-end proprietary models. Deepseek V3 is under active update, and the version we tested is V3–0324. |
| • | Qwen2.5-Max is Alibaba’s latest LLM, designed as a general-purpose MoE AI system with great performance on various standard tests for LLM. |
| • | Gemini 2.5 Pro is Google DeepMind’s latest and most advanced AI model. It excels in multimodal reasoning, supporting text, image, audio, and video inputs. |
| • | Cavity flow: Simulates laminar, isothermal, incompressible flow in a square cavity via icoFoam. The top wall moves horizontally at 1 m·s–1; the other walls are stationary. |
| • | PitzDaily: Models incompressible turbulent flow through a two-dimensional sudden expansion channel via the k-ε turbulence model and simpleFoam solver. |
| • | Hotroom: Simulates turbulent natural convection in a tall rectangular cavity via the k-ε model and buoyantBoussinesqSimpleFoam. The bottom wall is heated, the top wall is cooled, and the side walls are adiabatic. |
| • | Dambreak: Represents a simplified laminar dam break via the VOF-based interFoam solver. A water column collapses into a square tank containing a central rectangular obstacle, creating complex flow patterns and trapped air pockets. |
| • | Particle column: MPPICFoam is used to simulate particle dynamics and fluid flow in a vertical rectangular column. Fluid motion is described by the Navier–Stokes equations, and particles are tracked via the Lagrangian approach, which considers drag, collisions, and gravity. |
| • | Mixed vessel: This vessel simulates fluid mixing in a rotary agitator via pimpleFoam. The geometry features a cylindrical domain with rotating inner walls, stationary outer walls, and rectangular barriers to enhance mixing. |
| • | 2D rising bubble (Fig. 2(a)): The setup consists of a rectangular tank filled with water, measuring 30 mm in width and 100 mm in height. Initially, a bubble with a diameter of 10 mm is positioned centrally at the bottom of the domain. Buoyancy-driven motion induces the bubble to rise, deform, and interact dynamically with the surrounding fluid. |
| • | 2D falling droplet (Fig. 2(b)): This case examines the dynamics of a single water droplet falling under gravity within a two-dimensional rectangular tank filled with air, employing the volume of fluid (VoF) method. Initially, at t = 0 s, the droplet is positioned centrally at the tank’s upper boundary and subsequently descends. |
| • | 2D airfoil (Fig. 2(c)): This case investigates the aerodynamic performance of a two-dimensional NACA 0012 airfoil positioned at a 5º angle of attack within a computational wind tunnel. The domain dimensions are 2000 mm in length and 1000 mm in width. At the beginning of the simulation (t = 0 s), a uniform airflow at 20 m·s–1 enters the domain, initiating steady-state conditions driven by pressure gradients and viscous forces interacting with the airfoil surface. |
| • | 3D MotorBike: This case investigates the aerodynamic and turbulent flow characteristics around a simplified motorBike geometry. The transient airflow interaction is modeled for a motorcycle body with overall dimensions of 2.1 m × 0.8 m × 1.2 m. The three-dimensional computational domain extends 20 vehicle lengths upstream and downstream, placing the motorcycle 10 m downstream from the inlet boundary. |
| • | 2D cylinder (Fig. 2(d)): This case examines aerodynamic and vortex-induced phenomena around a two-dimensional circular cylinder. The cylinder is centered at the origin within a rectangular computational domain featuring clearly defined boundaries: the inlet (left side), outlet (right side), and walls (top and bottom). Initially, at t = 0 s, a uniform freestream velocity of 1 m·s–1 is imposed. |
| • | 2D nozzleFlow2D: This case investigates axisymmetric high-speed fuel injection. The computational domain includes a 3 mm diameter inlet connected to a gradually expanding throat. At the initial time t = 0 s, diesel fuel is injected at a velocity of 460 m·s–1 into a low-pressure gas environment maintained at atmospheric conditions. The simulation employs the volume of fluid (VoF) method coupled with a large eddy simulation (LES) turbulence model. |
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |