Draw, then watch the wind 先画形状，再看风
Freehand, line, curve or Bezier. Drop a preset, import an outline from a photo, or rotate the angle of attack with the sheet. 手绘、直线、曲线或贝塞尔。也可以放预设、从照片提取轮廓、或者用面板调整迎角。
Pocket wind tunnel · iOS
口袋风洞 · iOS
Wind, made visible. 让风，看得见。
Sketch any shape — an airfoil, a building, a paper airplane — and BreeZ traces every streamline, vortex and pressure pocket around it in real time. A real Lattice‑Boltzmann fluid solver, running entirely on your device. 画下任何形状——机翼、建筑、纸飞机—— BreeZ 会实时算出风从它身边流过的每一条线、每一个涡和每一处压力。 一个真正的 LBM 流体求解器，全程在你的设备上运行。
What you can do 你可以做什么
Three minutes in, you'll have your own little wind experiment. 三分钟，你就能搭出属于自己的小型风洞实验。
Four ways to look at it 四种观察方式
Streamlines, smoke, vorticity, pressure, velocity. Critical points (stagnation / separation) are labelled automatically. 流线、烟流、涡量、压力、速度场可任意切换。滞止点与分离点会自动标注。
Real solver, not a video loop 真求解器，不是循环视频
A D2Q9 Lattice‑Boltzmann simulation runs on Metal. Drag and lift readings update as you move things around. D2Q9 格子玻尔兹曼方法跑在 Metal 上。物体移动时阻力 / 升力实时更新。
Save, share, export 保存、分享、导出
Export a clean still or a 5‑second clip. Optional info chin shows the wind speed, angle, drag and lift used in the run. 导出整洁的静态图或 5 秒短片。可选的信息条会附上当时的风速、角度、阻力和升力。
Some moments 几个瞬间
Streamline, smoke and vorticity views. 流线、烟流、涡量三种视图。
What BreeZ is for BreeZ 的定位
BreeZ is a real‑time wind‑tunnel visualizer, built for curiosity, learning, and quick creative exploration. It runs an actual Lattice‑Boltzmann fluid solver, so the flow on screen is computed live every frame. Classroom and demo use is welcome. BreeZ 是一款实时风洞可视化工具，面向好奇心、教育场景与创意探索。底层跑的是真实的格子玻尔兹曼（LBM）流体求解器，屏幕上的气流是逐帧实时算出来的。欢迎在课堂与演示中使用。
If you need professional CFD, engineering simulation, or physical wind‑tunnel testing, BreeZ is not the right tool. Its fields and readings are meant as visual reference and intuition. Please don't use them as the basis for engineering design, safety assessment, manufacturing, or research conclusions. 如果你需要的是专业 CFD、工程仿真或实体风洞测试，BreeZ 并不是合适的工具。它显示的场和读数仅供视觉参考与直觉建立，请不要将其作为工程设计、安全判断、制造决策或科研结论的依据。
Our focus is on making air visible, interactive, and easy to understand, and on keeping the experience smooth on iPhone. The underlying physics keeps improving. What we're after is a believable feel for fluid behaviour, not engineering‑grade precision. 我们专注于让气流变得可见、可互动、容易理解，并在 iPhone 上保持流畅。底层物理会持续改进。最终我们追求的，是对流体行为产生可信的直觉，而不是工程级的数值精度。