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RealFlow是由西班牙Next Limit公司出品的流體動力學(xué)模擬軟件。它是一款獨(dú)立的模擬軟件，可以計(jì)算真實(shí)的運(yùn)動物體的運(yùn)動，包括液體。
RealFlow提供給藝術(shù)家們一系列精心設(shè)計(jì)的工具，如流體模擬（液體和氣體）、網(wǎng)格生成器、帶有約束的剛體動力學(xué)、彈性、控制流體行為的工作平臺和波動、浮力。你可以將幾何體或場景導(dǎo)入RealFlow來設(shè)置流體模擬。在模擬和調(diào)節(jié)完成后，將粒子或網(wǎng)格物體從RealFlow導(dǎo)出到其他主流3D軟件中進(jìn)行照明和渲染。
RealFlow功能
剛性的
這種材料類型用于模擬剛性、不可變形物體的行為。剛體是RealFlow的CPU加速Dyverso多物理場技術(shù)的一部分。
粒狀
RealFlow的顆粒解算法允許您模擬成堆的沙子、濕雪、滴落的鹽、冰雪片和很多其他材料。顆粒是RealFlow的GPU加速Dyverso多物理場技術(shù)的一部分。
彈性體
這種材料類型用于模擬軟體、膠狀物甚至布料的行為。Elastics是RealFlow的GPU加速Dyverso多物理場技術(shù)的一部分。
多物理場
在單個(gè)模擬引擎下創(chuàng)建和組合不同的材料，如液體、顆粒物質(zhì)或剛體和彈性體。RealFlow的高性能Dyverso技術(shù)采用GPU加速，可讓您對模擬進(jìn)行控制。
粘彈性
例如，粘彈性材料是泡沫材料或硅基材料的選擇，但肌肉、一些果凍狀物質(zhì)或某些涂料也具有這種特性。粘彈性液體是RealFlow的GPU加速Dyverso多物理場技術(shù)的一部分。
CARONTE
RealFlow的全功能多線程人體動力學(xué)引擎被命名為“Caronte”。剛體具有快速準(zhǔn)確的碰撞和自然的行為。軟體支持塑性和彈性自由形式變形—即使是高分辨率網(wǎng)格。
流體表面
RealWave網(wǎng)格可以通過對象、粒子和很多可自由組合的波浪發(fā)生器來影響和變形，以獲得高度逼真的海洋表面。其他功能包括置換貼圖的導(dǎo)出、波峰飛濺的創(chuàng)建、自定義幾何形狀的支持以及具有下游力的漂浮體模擬。
文本工具、對象
編輯器可讓您創(chuàng)建文本元素并在模擬中使用它們。RealFlow的對象可以變成剛體、彈性體或軟體；它們還充當(dāng)液體模擬的容器或障礙物。樣條曲線在RealFlow中創(chuàng)建或作為SVG文件導(dǎo)入，例如用于粒子發(fā)射或自定義力。
外力
通過易于使用的守護(hù)進(jìn)程引入力量。很多力量可以被縮放、限制和限制以控制它們的范圍和行為。守護(hù)進(jìn)程的例子有重力、引力、風(fēng)、渦流、阻力或基于樣條的力。還可以通過Python、C++和Graphs（RealFlow的基于節(jié)點(diǎn)的編程系統(tǒng)）引入自定義力。
渲染
導(dǎo)入場景、添加流體并從RealFlow渲染它們的簡單步驟。適用于靜止幀或動畫序列。由基于物理的渲染引擎提供支持：Maxwell Render。
網(wǎng)格
RealFlow的網(wǎng)格引擎速度很快，并且支持基于粒子和網(wǎng)格的流體。網(wǎng)格存儲年齡或速度等數(shù)據(jù)，并且可以通過過濾器對其進(jìn)行細(xì)化?？梢允褂貌眉艉投噙呅蝺?yōu)化，以及用于數(shù)據(jù)交換的各種行業(yè)標(biāo)準(zhǔn)格式?？梢酝ㄟ^置換貼圖增強(qiáng)網(wǎng)格流體網(wǎng)格。
繪形工具
RealFlow具有用于在粒子流體模擬中創(chuàng)建頂部飛濺和填充孔洞的工具。后者關(guān)系薄的、粘性的流體并支持卷須結(jié)構(gòu)的形成。
行業(yè)標(biāo)準(zhǔn)文件
RealFlow能夠讀取和寫入包含粒子和幾何體的Alembic文件。集成的拼接工具將序列中的各個(gè)Alembic文件組合到一個(gè)文件中。RealFlow可以讀寫帶有體積數(shù)據(jù)的OpenVDB和Field3D文件。
網(wǎng)絡(luò)模擬
RealFlow使用“獨(dú)立計(jì)算域”(IDOC)通過網(wǎng)絡(luò)分發(fā)模擬。獨(dú)立的“作業(yè)管理器”和“作業(yè)節(jié)點(diǎn)”應(yīng)用程序有助于管理和組織模擬。開放的C++插件架構(gòu)可以自定義將項(xiàng)目發(fā)送給manager的過程?？梢允褂妹總€(gè)網(wǎng)絡(luò)瀏覽器或內(nèi)置面板監(jiān)控模擬進(jìn)度。
編程接口
編程變得更簡便。在RealFlow的“Graphs”系統(tǒng)中，程序是通過連接具有預(yù)定義函數(shù)的節(jié)點(diǎn)創(chuàng)建的，并有助于完成全部任務(wù)，例如場的快速操縱、空間粘性、自定義力或圖像處理。RealFlow提供與Python 2.7和C++的接口。
【英文介紹】
RealFlow is a fluid and dynamics simulation tool for the 3D and visual effects industry, developed by Next Limit Technologies in Madrid, Spain. This stand-alone application can be used in conjunction with other 3D programs to simulate fluids, water surfaces, fluid-solid interactions, rigid bodies, soft bodies and meshes.
Features:
RIGID
This material type is used to simulate the behaviour of rigid, non-deformable bodies. Rigids are part of RealFlow's innovative, GPU-accelerated Dyverso multi-physics technology.
GRANULAR
RealFlow's granular solver allows you to simulate piles of sand, wet snow, trickling salt, icy flakes, and many other materials. Granulars are part of RealFlow's innovative, GPU-accelerated Dyverso multi-physics technology.
ELASTICS
This material type is used to simulate the behaviour of soft-bodies, jelly-like substances, and even cloth. Elastics are part of RealFlow's innovative, GPU-accelerated Dyverso multi-physics technology.
MULTI-PHYSICS
Create and combine different materials like liquids, granular substances, or rigid and elastic bodies under a single simulation engine. RealFlow's high-performance Dyverso technology is GPU-accelerated and gives you unmatched control over your simulations.
VISCOELASTIC
Viscoelastic materials are, for example, the choice for foamy or silicone-based materials, but also muscles, some jelly-like substances, or certain paints behave that way. Viscoelastic liquids are part of RealFlow's innovative, GPU-accelerated Dyverso multi-physics technology.
CARONTE
RealFlow's fully-featured, multi-threaded body dynamics engine is named“Caronte”. Rigid bodies feature fast and accurate collisions, and a natural behaviour. Soft bodies support plastic and elastic free form deformation – even with high-resolution meshes.
FLUID SURFACES
RealWave meshes can be influenced and deformed through objects, particles, and many – freely combinable – wave generators for highly-realistic ocean surfaces. Other features are the export of displacement maps, creation of crest splashes, support of custom geometry, and the simulation of floating bodies with downstream forces.
TEXT TOOLS, OBJECTS
An editor lets you create text elements and use them in simulations. RealFlow's objects can be turned into rigid, elastic, or soft bodies; they also act as containers or obstacles for liquid simulations. Splines are created inside RealFlow or imported as SVG files, e.g. for particle emission or custom forces..
EXTERNAL FORCES
Forces are introduced through easy-to-use daemons. Many forces can be scaled, bounded, and limited to control their scope and behaviour. Examples for daemons are gravity, attraction, wind, vortices, drag, or spline-based forces. It also possible to introduce custom forces through Python, C++, and Graphs – RealFlow's node-based programming system.
RENDER
Easy steps to import your scene, add the fluids and render them out from RealFlow. Valid for still frames or animation sequences. Powered by the most advanced physically-based render engine: Maxwell Render.
MESHES
RealFlow's mesh engines are fast, and support particle- and grid-based fluids. The meshes store data like age or velocity, and they can be refined through filters. Clipping and polygon optimization is available, as well as various instry-standard formats for data exchange. Grid fluid meshes can be enhanced through displacement maps.
SHAPING TOOLS
RealFlow has tools for the creation of crown splashes and the filling of holes in particle fluid simulations. The latter one cares for thin, cohesive sheets of fluid and supports the forming of tendril structures.
INDUSTRY-STANDARD FILE
RealFlow is capable of reading and writing Alembic files with particles and geometry. An integrated stitching tool combines individual Alembic files from sequences to a single file. Furthermore, RealFlow reads and writes OpenVDB and Field3D files with volumetric data.
NETWORK SIMULATIONS
RealFlow uses“Independent Domains of Computation” (IDOCs) to distribute simulations over a network. Separate “Job Manager”and“Job Node”applications help to manage and organize simulations. An open C++ plugin architecture makes it possible to customize the process of sending projects to the manager. The simulation progress can be monitored with every web browser or a built-in panel.
PROGRAMMING INTERFACES
Programming made easier. In RealFlow's“Graphs”system, programs are created by connecting nodes with pre-defined functions, and help to accomplish almost any task, e.g. fast manipulation of fields, spatial viscosity, custom forces, or image processing. RealFlow offers interfaces to Python 2.7 and C++.
