Density-Based — Incompressible to Hypersonic
Cadence Fidelity Flow DBS
The go-to solution for a diverse range of flow challenges in aerodynamics, conjugate heat transfer, fluid-structure interaction, and complex multiphysics. Density-based and pressure-based solvers in one framework — optimised for high-speed and thermal flows from incompressible to Mach 20.
Overview
Mach 0 to Mach 20, One Solver
Fidelity Flow DBS handles a diverse range of flow challenges — aerodynamics, conjugate heat transfer, fluid-structure interaction, and complex multiphysics. Its density-based and pressure-based solvers are optimised for high-speed and thermal flows, with state-of-the-art shock-capturing numerics for the compressible end of the envelope.
Whether you're modelling missile aerothermodynamics, gas-turbine flow paths, or transonic external aero, the same solver framework scales the algorithm to the physics.
Capabilities
Capabilities Across the Flow Regime
Aerodynamics Mach 0 → 20
Incompressible to hypersonic in a single solver framework — transonic shocks, supersonic intakes, hypersonic re-entry, all covered with the same workflow.
Conjugate Heat Transfer
Tight solid-fluid thermal coupling for hot-section turbomachinery, electronics cooling, and thermal-protection systems.
Fluid-Structure Interaction
Direct coupling for tight FSI; modal coupling for flutter and forced response — capture aeroelastic effects without manual data exchange.
Cavitation Modelling
Three cavitation models: barotropic law, thermodynamic tables, and transport-equation — covers everything from inducers to marine propellers.
Combustion Modelling
Flamelet to FGM (Flamelet-Generated Manifold) — model premixed, non-premixed, and partially-premixed flames at industrial scale.
Unsteady Flow (DES)
Detached Eddy Simulation and other hybrid RANS-LES methods — unsteady fidelity where RANS is too coarse and LES is too expensive.
Advanced Numerics
Methods Built for High-Speed Engineering
High-Speed Turnaround
Optimised solver internals deliver high-speed turnaround — same accuracy, much less wall-clock time.
Nonlinear Harmonic Method
NLH captures unsteady periodic phenomena at near-steady cost — get unsteady fidelity without paying the full transient bill.
OpenLabs Customisation
Extend the solver via OpenLabs — add custom material models, boundary conditions, source terms; deploy organisational IP as solver code.
Massive Parallelisation
Scales to hundreds of CPU cores or multiple GPUs — industrial problems in industrial turnaround.
Structured + Unstructured
Hybrid meshes handled natively — mix structured boundary layers with unstructured bulk for the best of both.
PBS Sibling
Same framework as Fidelity Flow PBS — share meshes and post-processing, switch the algorithm when the physics demands.
Applications
Where DBS Excels
External Aero
Supersonic / Hypersonic
Gas-Turbine Flow Paths
Combustion
Cavitation
Thermal Protection
Related
Works Well With
Fidelity Flow PBS
Pressure-based sibling for low-Mach, multiphase, and CHT — same framework, different algorithm core.
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Fidelity Turbo
Turbomachinery solver — pair with DBS for gas-turbine secondary flows and exhaust analysis.
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Fidelity CharLES
High-fidelity LES for the unsteady aero / aeroacoustic regimes where DBS RANS / DES isn't enough.
Learn More
Get Started
From Aerodynamics to Multiphysics
Talk to Craftronics about Fidelity Flow DBS — density-based CFD covering Mach 0 to Mach 20 with full multiphysics.