Professor Humphrey has particular research interests in the areas of medical ultrasound and underwater acoustics. Common themes running through his research include the understanding and application of non-linear acoustics and the laboratory measurement of physical acoustic phenomena including scattering. His main research interests include: · Nonlinear propagation, streaming and imaging in medical ultrasonics; · Ultrasonic heating and propagation in biological media; · Parametric arrays and their application to acoustic measurements in the laboratory; · Acoustic transmission and reflection properties of isotropic and anisotropic materials; · Scattering from objects and methods of measuring and predicting the scattered field for regular and irregular bodies; · Numerical modelling of transducers and fields.
Paul has research interests which include signal processing, underwater acoustics and bioacoustics (the way animals, especially marine mammals, use sound). He is primarily concerned with developing tools to assist in the computer-aided analysis of underwater sounds and understanding the role of those sounds in the marine environment.
Acoustics, in the form of sonar, is an important tool for the exploration of the marine environment. It is used by the seismic industry to locate oil and gas reserves, by the military to detect objects, by oceanographers to make measurements and by marine mammals to survive.
Man-made underwater acoustic systems rely upon computers to process the data coming from sensors to interpret the environment. The processing methods within the computer systems are a critical component often defining the overall success of the instrument.
His fluid dynamics expertise lies in the synthesis of analytical, experimental and computational methods for a diverse range of applications. Examples of such work are in the development of a patented integrated tidal energy generator (winner of The Engineers’ Energy Sector Innovation award 2008), supervision of the students who designed Amy Williams’ Gold medal winning bob skeleton sled (winner of The Engineer’s Sport Technology Innovation award in 2010) and with continued support for Gold medal success in 2014 and 2018, academic supervisor for the Delphin Autonomous underwater vehicle (winner of the SAUC-E competition in 2007).
He has acted as a consultant to diverse organisations including NOC, Speedo, Shell Shipping, BAEsystems, Rolls Royce, dstl, QinetiQ, and WS Atkins.
Expertise: Future Fuels for Shipping; Maritime Robotics and Autonomy; Rudder, hydrofoil, and control surface design; Unsteady race simulation for kayak, rowing and sailing; Hull-propeller-rudder interaction; Ship added resistance and manoeuvring in waves; Underwater noise prediction using CFD; Experimental techniques for use of wave/tow tank testing; Tidal turbines, wave energy and offshore wind turbine design; Wind turbine array power prediction; Hydrogen fuel cells for hybrid ship propulsion; Hydrodynamics of swimming assessment by pool based test techniques and using CFD.