Professor Collins' research interests are on the application of direct numerical simulation to a broad range of turbulent processes. Areas of current interest include: (i) turbulent coagulation of aerosol particles; (ii) experimental and numerical evaluation of Lagrangian statistics in turbulent ...
Professor Collins' research interests are on the application of direct numerical simulation to a broad range of turbulent processes. Areas of current interest include: (i) turbulent coagulation of aerosol particles; (ii) experimental and numerical evaluation of Lagrangian statistics in turbulent flows; (iii) mixing and chemical reaction in turbulent flames; (iv) turbulent breakup of microstructures (e.g., drops, polymers and red blood cells); (v) drag reduction due to polymer additives. A unifying theme is the importance of fine---scale (micro---turbulence) transport to these phenomena. A second focus is on developing a new class of turbulence models that are capable of describing micro---turbulence processes. Recent contributions have been made toward extending fundamental spectral theories of turbulence to applications (i) and (ii). Current emphasis is on validating the models and incorporating them into computational fluid dynamics codes.