# QMikeAI: Quantum HPC/CFD

> Quantum-enhanced computational fluid dynamics and high-performance computing for scientific research.

QMikeAI applies quantum computing to some of the most computationally demanding problems in science and engineering: fluid dynamics simulation, turbulence modeling, and large-scale linear algebra. These problems are bottlenecked by the need to solve massive systems of linear equations, where quantum algorithms like HHL promise exponential speedups under specific conditions.

## Target Applications

| Domain | Problem | Quantum Algorithm | Potential Speedup |
|---|---|---|---|
| Aerodynamics | Airflow simulation (RANS) | Variational quantum linear solver | Polynomial |
| Weather modeling | Navier-Stokes on global grids | HHL for sparse linear systems | Exponential (conditional) |
| Turbulence | Direct numerical simulation | Quantum lattice Boltzmann | Under investigation |
| Materials science | Molecular dynamics | VQE for force fields | Near-term accessible |
| Climate modeling | Ocean circulation | Quantum differential eq. solvers | Long-term |

```{admonition} Honest Assessment
:class: important
Quantum advantage for CFD is a long-term prospect. Current quantum hardware cannot compete with classical CFD solvers (OpenFOAM, ANSYS Fluent) for practical problem sizes. QMikeAI's near-term value is in developing quantum-ready algorithms and benchmarking against classical baselines, preparing for the fault-tolerant era.
```

## Architecture

QMikeAI integrates quantum coprocessors into existing HPC workflows:

```
Classical HPC Cluster (Slurm)
├── CPU nodes: Mesh generation, pre/post-processing
├── GPU nodes: Large matrix operations, visualization
└── QPU access: Quantum linear solvers for specific subroutines
    └── Zipminator layer: PQC-encrypted data transfer
```

## Further Reading

- {doc}`cfd` -- Quantum algorithms for computational fluid dynamics
- {doc}`navier_stokes` -- Quantum approaches to Navier-Stokes equations
- {doc}`hpc_integration` -- Integrating quantum coprocessors with HPC clusters
- {doc}`/quantum_book/foundations/qml/matrix_inversion` -- The HHL algorithm