Road Science and Technology is the authorized general distributor of FLOW-3D China

Flow-3D professional flow model analysis software CFD software

CFD simulation tool for mold flow analysis

FLOW-3D

High precision computational fluid dynamics (CFD) software
Unique and powerful multi physical field tool

FLOW-3D 2023R2 has brought significant improvements to the calculation of dynamic mixing length of the two equation turbulence model; The performance of the hydrostatic solver is significantly improved, and the convergence speed in the pretreatment phase is accelerated by about 6 times; An optimized pressure solver is introduced to improve the performance of compressible flow problems; The new result file format based on EXODUS II format realizes faster post-processing.

FLOW-3D HYDRO 2023R2

FLOW-3D HYDRO 2023R2 has brought significant improvements to the calculation of dynamic mixing length of the two equation turbulence model; The performance of the hydrostatic solver is significantly improved, and the convergence speed in the pretreatment phase is accelerated by about 6 times; It extends the terrain modeling function, supports GeoTIFF (. tif) and LandXML (. xml) file formats, and improves the interactivity of grid files; The new result file format based on EXODUS II format realizes faster post-processing.

The most advanced post-processing tools
Complete and powerful computational fluid dynamics simulation platform

FLOW-3D It is a high-precision computational fluid dynamics (CFD) software to solve the world's most intractable three-dimensional transient free surface problem, help you optimize product design and shorten the time to market. FLOW-3D The complete multi physical field kit of also includes the most advanced post-processing tool FLOW-3D POST 。

FLOW-3D It provides a complete and general CFD simulation platform for engineers and technicians to study the dynamic characteristics of liquids and gases in various industrial applications and physical processes. FLOW-3D It serves a wide range of industries, including water conservancy and environment, maritime, aerospace, metal casting, additive manufacturing, welding, automobile, energy, microfluidics, biotechnology, coatings and consumer goods.

FLOW-3D It is a unique and powerful multi physical field tool, which provides functions, ease of use and capabilities to help engineers achieve modeling goals. Built FLOW-3D with the highest level of performance CLOUD , seamlessly expanding from standard workstations to servers with hundreds of CPU cores in high-performance computing solutions.

Why FLOW-3D ?

FLOW-3D is a powerful modeling tool that enables engineers to understand many physical flow processes in depth. FLOW-3D has the special function of accurately predicting free surface flow. It is an ideal computational fluid dynamics (CFD) software in the design phase and in the process of improving production efficiency.

The free surface is modeled by the volume of fluid (VOF) technique;
Free mesh generation separates the mesh from the geometric structure;
Use FAVOR in complex geometry ™ It is very simple to establish fluid flow model by using technology;
FLOW-3D provides a variety of mesh generation functions, making the design simpler, more efficient and more robust when building complex flows.

New Functions of FLOW-3D 2022R2

With the release of FLOW-3D 2022R2 product series, Flow Science has unified the workstation and HPC version of FLOW-3D to provide a single solver engine that can utilize any type of hardware architecture (from single node CPU configuration to multi node parallel high-performance computing execution). Other developments include new logarithmic conformational tensor methods for viscoelastic flows, continuous solver speed performance improvements, advanced cooling channel and virtual component control, and improved aeration capabilities.

Unified Solver

We have migrated the FLOW-3D product to a unified solver for seamless operation in a local workstation or high-performance computing hardware environment.

Many users run their models on laptops or local workstations, and in addition, run larger models on high-performance computing clusters. In the 2022R2 version, the unified solver allows users to take advantage of the OpenMP/MPI hybrid parallelism in the HPC solution to run on workstations and laptops

Solver performance improvements

Multi CPU workstation

Multi CPU workstations are now very common and can run large simulations. With the help of the new unified solver, users who use this kind of hardware usually see performance improvements, because they can run simulations using OpenMP/MPI hybrid parallelism, which was only available on HPC cluster configurations in the past.

Low level routines improve vectorization and memory access

In most test cases, a performance improvement of about 10% to 20% can be observed, and in some cases, the run-time benefit exceeds 20%.

Improved volume convection stability limits

The time step stability limit is the main driving factor in the model operation. A new time step stability limit, namely 3D convection stability limit, is provided in the Numerics window. For running models with restricted convection (cx, cy, or cz limits), the new option shows an acceleration of about 30%.

Pressure Solver Preregulator

In some cases, for challenging flow configurations, the running time may be prolonged due to too many iterations of the pressure solver. For those difficult situations, in 2022R2, when there are too many model iterations, FLOW-3D will automatically activate a new pre regulator to help pressure convergence. Tests run 1.9 to 335 faster!

Logarithmic conformational tensor method for viscoelastic fluids

We provide users with a new viscoelastic fluid solver option, especially for the case of high Weissenberg numbers.

Active simulation control extension

The function of active simulation control has been extended to phantom objects commonly used for continuous casting and additive manufacturing applications, as well as cooling channels used for casting and many other thermal management applications.

Improvement of aeration function

For diffusers and similar industrial bubble flow applications, mass sources can now be used to introduce air into the water column. In addition, the default values of aeration and dissolved oxygen turbulent diffusion are updated.

FLOW-3D User Stories

Advanced Features

Meshing and geometry

Structured finite difference/control volume grids for fluid and thermal solutions
Finite element mesh in Cartesian and cylindrical coordinates for structural analysis
Multi block mesh with nested, linked, partially overlapping, and consistent grid blocks
Conform to grid and expand to any shape
Fractional area/volume（ FAVOR ™) For efficient and accurate geometric definition
Reduce geometric gap
Mesh quality check
Basic Solid Modeler
Import CAD Data
Import/export finite element meshes through the Exodus II file format
Mesh and geometric independence
Cartesian or cylindrical coordinates

Turbulence Models

RNG model
Binary equation κ - ε model
Binary equation κ - ω model
Large eddy simulation

Advanced Physical Model

6-DOF Moving Object Model with Given Action and Full Coupling
Rotate Objects
Collision model
Tie down moving objects (springs, ropes, broken mooring lines)
Elastic membrane and wall surface
porosity
Finite element based on elastoplastic deformation
Finite element analysis of thermal stress caused by temperature change in curing fluid
Combustion solid components

Fluid Type Selection

Internal flow field, external flow field and free surface flow field
Three dimensional, two dimensional and one dimensional problems
Transient flow field
Non viscous flow, laminar flow and turbulent flow
Mixed use of shallow water model and three-dimensional flow
Non inertial coordinate system
Multi scalar category
Two-phase flow
Phase change heat transfer
Saturated and unsaturated porous media

Chemical model

Stiffness equation of chemical change
Static or Convective Components

Porous medium model

Saturated and unsaturated flow
Variable porosity
Directional porosity
Flow loss (linear quadratic form)
Capillary pressure
Heat exchange in porous media
Van Genunchten model of unsaturated flow

Physical Model Options

Fluid structure coupling, thermal stress, solid plastic deformation, particle flow, moisture drying, solid solute dissolution, sediment transport and scouring, sludge sedimentation, cavitation (potential, passive, active tracking), phase change (liquid gas, liquid solid), surface tension, thermocapillary effect, wall attachment, wall roughness, vapor and bubble, mass/momentum/energy source, viscosity can follow shear stress, Density or temperature change, thixotropic viscosity, viscoelastic plastic fluid, elastic film and wall, evaporation residue, electromechanical effect, dielectric phenomenon, electroosmosis, electrostatic particles, joule heating, aeration, molecular and turbulent diffusion, material properties changing with temperature, spray cooling

Discrete particle model

Massless tracer particles; Particles with different particle sizes considering mass; Solid, fluid and gas particles; Bubble particle tracking collapse cavity area; Nonlinear hydrodynamic resistance; Mass effect is increased; Monte Carlo diffusion; Particle fluid momentum coupling; Coefficient of restitution or viscous particles; Point or volume particle source
Initial particle block; Heat transfer with fluid; Evaporation and condensation; Solidification and melting; Coulomb force and dielectric force
Monitoring particles

Two phase and two-component models

Liquid/liquid and gas/liquid interfaces; Variable density mixture; Compressible fluid with diffusing incompressible components; Drift flux with dynamic droplet size; Two component, steam/non condensable gas; Gas-liquid solid phase transition; Adiabatic bubble; Phase change bubble; Discrete particle continuous fluid; Scalar transport; Uniform bubble; Supercooling; Dual field temperature

Flow field definition options

Boundary condition setting: symmetrical; Rigid and elastic walls; Continuity; Cycle; Given pressure; Given speed; Outflow; Discharge pressure; Outflow boundary with wave absorbing layer; Grid boundary condition continuation; Static pressure; Volume flow; Nonlinear periodic and solitary waves; Calibration curve and natural hydrodynamic force; Wave absorbing layer
Continue simulation from previous simulation results
Continue simulation
Overlapping boundary condition
Changing Mesh and Modeling Options
Change model parameters

Combination with other procedures

Import STL file or ASCII file to build geometric model
The result file is directly provided to EnSight ®, Field View ® & Tecplot ® Read by professional post-processing software
Input finite element solution through Exodus II file format
Output Text Data
Output Neutral data
Customized support
Solid property material database

Thermal Model Options

natural convection
Forced convection
Heat conduction of fluid and solid
Heat transfer between fluid and solid
Heat source and heat dissipation distribution in fluid and solid
radiation
Viscous heating
Orthogonal heat conduction
Thermal stress

Data processing options

The most advanced post-processing tools FLOW-3D POST
Custom Result Analysis
High quality OpenGL based pictures
Color or black and white vector, contour display, 3D surface and particle display
Movement history and monitoring point data
Visualization of non inertial reference frame motion
Measuring baffle
Random shape volume sampling
Force and moment calculation
Animation output
PNG, JPEG, BMP format picture output
streamline
Flow tracking

Numerical Model Options

Calculation Method of TruVOF Fluid Level Tracking
A steady state accelerator for free surface flow
Treatment of first-order and second-order convection terms
Obvious and fuzzy interface tracking
Implicit and explicit numeric options
immersed boundary method
GMRES&SOR iterative pressure solver
User definable variables, subprograms and output data
Numerical parameters can be modified during simulation

Convenient users

Active analog control (probe based measurement)
mesh generator
Mesh quality check
Import using an external time-varying table file
Adaptive time step control based on accuracy and stability
Automatic convergence control
Wizards help optimize calculation efficiency
Units of all variables
Custom Units
Component transformation
Move particle source
Changing simulation parameters during operation
Start and manage multiple simulations
Automatic simulation termination based on user-defined criteria
Run a simulation using remote solve on a remote server
Copy boundary conditions to other boundaries

Fluid Model Options

Single incompressible fluid - confined space or free surface considered
Flow field composed of two incompressible fluids - obvious or mixed interface
Compressible fluid - subsonic, transonic and supersonic
Stratified fluid
acoustic wave
Particle motion considering different particle sizes and densities

Multiprocessor computing

Shared memory computer
Distributed memory cluster

Shallow water model

Convertible terrain data
Raster Grid Data Interface
Surface roughness of specific subassembly
wind shear
Influence of ground roughness
Manning roughness
Viscous&turbulent flow
Sediment transport and scouring
surface tension
conduct heat
Dry wet interface

FLOW-3D POST

Particle visualization; Velocity vector field; Streamlines and traces; Isosurface; 2D, 3D, arbitrary section; Volume rendering; Detection point data; Historical data; Vortex core; Connect multiple results; Multi data view; Non inertial reference frame; Spline section

ZEISS 3D scanner vendor

Road Science and Technology is the authorized general distributor of FLOW-3D China

FLOW-3D

The most advanced post-processing tools
Complete and powerful computational fluid dynamics simulation platform

Why FLOW-3D ?