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Projects: Projects for Investigator
Reference Number EP/X017249/1
Title Can quantum algorithms revolutionise the simulation of turbulent flows?
Status Started
Energy Categories Renewable Energy Sources(Wind Energy) 5%;
Energy Efficiency(Transport) 5%;
Not Energy Related 90%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Applied Mathematics) 20%;
PHYSICAL SCIENCES AND MATHEMATICS (Computer Science and Informatics) 80%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr L Magri

Imperial College London
Award Type Standard
Funding Source EPSRC
Start Date 03 January 2023
End Date 02 May 2024
Duration 16 months
Total Grant Value £201,822
Industrial Sectors No relevance to Underpinning Sectors
Region London
Programme NC : Engineering
Investigators Principal Investigator Dr L Magri , Aeronautics, Imperial College London (99.998%)
  Other Investigator Dr A Jacquier , Mathematics, Imperial College London (0.001%)
Dr S Laizet , Aeronautics, Imperial College London (0.001%)
  Industrial Collaborator Project Contact , The Alan Turing Institute (0.000%)
Web Site
Abstract Our research vision is to create a framework and toolbox to marry over 60 years of high-performance computing with quantum computing to revolutionise understanding, modelling, and simulation of fluid mechanics.The efficient conversion of energy in wind farms, the explosions of supernovas, and the air resistance around airplanes have a common factor: a fluid. Fluid mechanics is a major UK industrial and research strength, which is an enabling technology from transport, healthcare, marine and energy. According to the 2021 UK white paper, fluid mechanics is a sector that employs 45,000 people in 2,200 companies, which generates a £14-billion output to the UK. Fluids of practical interest can be turbulent. Both in fundamental and applied research, numerical simulation is key to understanding, predicting and controlling turbulent flows. In fundamental research, the goal is to unveil the physical mechanisms, scales and dynamics of turbulence. In industry, the goal is to embed accurate numerical simulations of turbulence with a fast turnaround into the engineering design cycle. We are far from achieving this.Although we know an excellent model for turbulent flows (the Navier-Stokes equations), the chaotic nature of turbulence makes accurate computer simulations exceedingly expensive. For example, a state-of-the-art simulation of turbulence of a simple channel flow needs 350 billion grid points and takes 260 million computing hours. To analyse fundamental and engineering configurations, large supercomputing resources are deployed. Although the flop operations of computers roughly double every two years, we will need to wait for decades before being able to tackle a fundamental flow, such as a channel flow, at realistic flow velocities. The next generation of large exascale computers, however, will only allow for a three- to five-fold increase in the flow velocities with respect to the state-of-the-art. The question is "how can we accurately simulate turbulent flows of practical interest with affordable computations?" Classical algorithms are reaching their limits.Key to this proposal is the observation that the numerical solution of the nonlinear equations of turbulence revolves around solving linear systems. Linear systems can be solved formidably fast by quantum algorithms. Quantum computing offers a repository of algorithms that can revolutionise computational science and turbulence simulations. This is because classical computers require computational resources that scale exponentially with the system's degrees of freedom, whereas quantum algorithms scale only polynomially. This is also known as the quantum advantage. If the conjectures published in 2021 by Google, Microsoft, IBM, MIT, Harvard, among others, on the quantum advantage are correct, the simulation of a turbulent system can be accelerated by ten to thousand orders of magnitudes. This project will pioneer this research field. In this project, we will develop and testquantum-enhanced computational fluid dynamics (q-CFD) by exploiting the untested, but plausible, quantum advantage. This will blaze the trail for computing turbulence with a synergistic combination of classical and quantum algorithms.
Publications (none)
Final Report (none)
Added to Database 08/02/23