High-resolution material transitions
The formulation targets sharply resolved compressible material interfaces rather than allowing numerical mixing to dominate the local solution.
Hydro · Compressible multi-material hydrocode
Resolve shocks, material interfaces and acoustics together
Hydro is LIKUA’s high-resolution hydrocode for strongly transient continuum problems. It is built to preserve compressible material boundaries and acoustic-wave behaviour through shock interactions, large impedance changes and rapidly evolving interfaces.
Material boundaries
Interface treatment for compressible materials with strongly different properties.
Wave fidelity
Acoustic and shock waves remain central parts of the physical solution.
Fast transients
Designed for highly nonlinear events evolving over very short time scales.
Scalable workflow
Parallel execution and GUIX-H interaction for demanding simulations.
The numerical challenge
Interfaces must transmit the right waves
Hydrocode problems combine discontinuities in pressure, density and material response with moving boundaries between materials. A useful solution must capture the interface sharply while preserving the reflected and transmitted waves created when shocks cross it.
Difficult material pairings
Large acoustic-impedance differences are treated as a primary modelling challenge, including gas–liquid and other strongly dissimilar material combinations.
Shock and acoustic propagation
Pressure-wave transmission, reflection and interaction are resolved together with the evolving material boundary.
Interface-driven dynamics
The solver supports investigation of rapidly changing interfaces and the instabilities produced by shock loading and strong acceleration.
Highly nonlinear events
Hydro is organised around dynamic continuum behaviour where the decisive physics occurs over short time scales and steep spatial gradients.
Parallel numerical execution
Distributed computation supports the spatial and temporal resolution required by demanding shock-dominated simulations.
Demonstration · Underwater blast
Strong waves across a moving gas–liquid boundary
Underwater explosion modelling combines an energetic high-pressure region, a deforming material interface and wave propagation through a much higher-impedance liquid. The case therefore exercises the interface and acoustic parts of the method at the same time.
Wave transmission
Propagation through the liquid domain without separating acoustics from interface motion.
Interface evolution
Deformation of the explosive-gas region during rapid pressure release.
Engineering use
Foundation for underwater blast studies and pressure-loading assessment.
Demonstration · Interface acoustics
A compact test of the hardest local physics
The water–air shock tube isolates wave interaction at a strongly dissimilar material boundary. It provides a clear view of transmission, reflection and interface resolution without the geometric complexity of a full application.
Large impedance ratio
Gas and liquid place very different demands on the interface treatment.
Acoustic response
Reflected and transmitted disturbances can be assessed directly.
Method verification
A controlled configuration for studying resolution and numerical behaviour.
Application space
For shock-dominated multi-material problems
Hydro focuses on physical regimes in which strong pressure waves, fast interface motion and material-property jumps determine the engineering outcome.
Explosive-event simulation
Strong pressure-wave development and propagation from rapidly expanding energetic regions.
Underwater explosions
Gas–liquid interface evolution, transmitted pressure waves and underwater blast loading.
Impact and cratering
Highly transient continuum response involving shocks, interfaces and severe deformation.
Protective and shield design
Pressure loading and multi-material wave interaction relevant to protection concepts.
Inertial-confinement research
Interface instabilities and shock interactions between materials with strongly different impedances.
Interface and acoustic benchmarks
Controlled studies of material-boundary resolution, wave transmission and reflection.
LIKUA simulation environment
A specialised solver in a connected engineering stack
Hydro and CMPS share LIKUA’s simulation framework while addressing different physical regimes. Hydro concentrates on shock-dominated compressible multi-material dynamics; CMPS concentrates on compressible CFD and coupled flow physics.
GUIX-H provides the interactive layer for Hydro setup, solver communication, monitoring and parallel result visualisation, from a local workstation to distributed HPC resources.
GUIX-H engineering environment
Case definition, solver control, monitoring and technical visualisation.
Hydro solver
Compressible multi-material dynamics, interfaces, shocks and acoustic waves.
Parallel compute resources
Distributed execution for the resolution and time scales required by the case.
Project workflow
From material definition to engineering interpretation
A Hydro project is defined around the physical event, the interacting materials and the wave or interface quantities that must be resolved for the decision at hand.
Define the event
Geometry, material regions, initial states and the required physical outputs.
Build the case
Discretisation, boundary treatment, numerical controls and resolution strategy.
Run in parallel
Execute on the appropriate workstation or distributed computing environment.
Interpret the physics
Examine waves, interface motion, pressure histories and application-specific results.
Hydro for your application
Start with the event, materials and result you need to trust
Share the physical scenario, material system, characteristic time and length scales, available reference data and the outputs required for your engineering decision.
Discuss a Hydro case