Dr. C.P. Caulfield

Lecturer, BP Institute and DAMTP

Fellow of Churchill College

Dr Colm-cille P. Caulfield is interested in fluid flows where density variations play a critical dynamical role. He strives to use a combination of mathematical modelling, numerical simulation and laboratory experimentation to understand and quantify fundamental physical processes, particularly when they are transient in nature.

New Research Opportunity

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Biography

1992-1994: Post-doctoral research fellow for the Japan-Canada Project in Weather and Climate of the Arctic, Department of Physics, University of Toronto
1992-1993: Senior Visitor, Department of Engineering Science, Hokkaido University
1995-1999: Lecturer, Department of Mathematics, University of Bristol
1999-2001: Assistant Professor of Environmental Engineering, Department of Mechanical and Aerospace Engineering, Irwin and Joan Jacobs School of Engineering, University of California, San Diego
2001-2005: Associate Professor (with tenure) of Environmental Engineering, Department of Mechanical and Aerospace Engineering, Irwin and Joan Jacobs School of Engineering, University of California, San Diego
2004-2005: Visiting Researcher (Poste Rouge au CNRS) in the Hydrodynamics Laboratory, (LaDyHX) Ecole Polytechnique-CNRS
2005-: University Lecturer in Fluid Flow, BP Institute and the Department of Applied Mathematics and Theoretical Physics, University of Cambridge
2005-: Fellow and College Lecturer in Mathematics, Churchill College, University of Cambridge

Qualifications

1987 BSc Mathematics, University of Ulster at Coleraine
1991 PhD DAMTP, Cambridge

Research

stratified flows
turbulent mixing processes
flow instability and transition
turbulent plumes
building ventilation
bubble dynamics and interaction with turbulence

Recent Publications

Arratia C., Caulfield C.P. and Chomaz J.M. (2013) Transient perturbation growth in time-dependent mixing layers. JOURNAL OF FLUID MECHANICS 717: 90-133 FEB 2013.
Shravat A., Cenedese C. and Caulfield C.P. (2012) Entrainment and mixing dynamics of surface-stress-driven stratified flow in a cylinder. J FLUID MECH 691: 498-517 JAN 25 2012.
Landel J.R., Caulfield C.P. and Woods A.W. (2012) Meandering due to large eddies and the statistically self-similar dynamics of quasi-two-dimensional jets. J FLUID MECH 692: 347-368 FEB 10 2012.
Balmforth N.J., Roy A. and Caulfield C.P. (2012) Dynamics of vorticity defects in stratified shear flow. J FLUID MECH 694: 292-331 MAR 10 2012.
van Sommeren D.D.J.A., Caulfield C.P. and Woods A.W. (2012) Turbulent buoyant convection from a maintained source of buoyancy in a narrow vertical tank. J FLUID MECH 701: 278-303 JUN 25 2012.
Sheen K.L., White N.J., Caulfield C.P. and Hobbs R.W. (2012) Seismic imaging of a large horizontal vortex at abyssal depths beneath the Sub-Antarctic Front. NAT GEOSCI 5 (8): 542-546 AUG 2012.
Foures D.P.G., Caulfield C.P. and Schmid P.J. (2012) Variational framework for flow optimization using seminorm constraints. PHYSICAL REVIEW E AUG 9 2012.
Landel J.R., Caulfield C.P. and Woods A.W. (2012) Streamwise dispersion and mixing in quasi-two-dimensional steady turbulent jets. JOURNAL OF FLUID MECHANICS 711: 212-258 NOV 25 2012.
Rabin S.M.E., Caulfield C.P. and Kerswell R.R. (2012) Triggering turbulence efficiently in plane Couette flow. JOURNAL OF FLUID MECHANICS 712: 244-272 DEC 10 2012.

Earlier Publications

Coomaraswamy I.A. and Caulfield C.P. (2011) Time-dependent ventilation flows driven by opposing wind and buoyancy. J FLUID MECH 672: 33-59 APR 2011.
Lombardi M., Caulfield C.P., Cossu C., Pesci A.I. and Goldstein R.E. (2011) Growth and instability of a laminar plume in a strongly stratified environment. J FLUID MECH 671: 184-206 MAR 2011.
Yamamoto H., Cenedese C. and Caulfield C.P. (2011) Laboratory experiments on two coalescing axisymmetric turbulent plumes in a rotating fluid. PHYS FLUIDS 23 (5): - MAY 2011 056601.
Sheen K.L., White N., Caulfield C.P. and Hobbs R.W. (2011) Estimating Geostrophic Shear from Seismic Images of Oceanic Structure. J ATMOS OCEAN TECH 28 (9): 1149-1154 SEP 2011.
Dalziel S.B., Patterson M.D., Caulfield C.P. and Le Brun S. (2011) The structure of low-Froude-number lee waves over an isolated obstacle. J FLUID MECH 689: 3-31 DEC 2011.
Woods A.W., Caulfield C.P., Landel J.R. and Kuesters A. (2010) Non-invasive turbulent mixing across a density interface in a turbulent Taylor-Couette flow. J FLUID MECH 663: 347-357 NOV 2010.
Wells M., Cenedese C. and Caulfield C.P. (2010) The Relationship between Flux Coefficient and Entrainment Ratio in Density Currents. J PHYS OCEANOGR 40 (12): 2713-2727 DEC 2010.
Flynn M.R. and Caulfield C.P. (2009) Effect of volumetric heat sources on hysteresis phenomena in natural and mixed-mode ventilation. BUILD ENVIRON 44 (1): 216-226 JAN 2009.
Tang W., Caulfield C.P. and Kerswell R.R. (2009) A prediction for the optimal stratification for turbulent mixing. J FLUID MECH 634: 487-497 SEP 10 2009.
Scase M.M., Aspden A.J. and Caulfield C.P. (2009) The effect of sudden source buoyancy flux increases on turbulent plumes. J FLUID MECH 635: 137-169 SEP 25 2009.
Bower D.J., Caulfield C.P., Fitzgerald S.D. and Woods A.W. (2008) Transient ventilation dynamics following a change in strength of a point source of heat. J FLUID MECH 614: 15-37 NOV 10 2008.
Landel J.R., Cossu C. and Caulfield C.P. (2008) Spherical cap bubbles with a toroidal bubbly wake. PHYS FLUIDS 20 (12): - DEC 2008 122101.
Dalziel S.B., Patterson M.D., Caulfield C.P. and Coomaraswamy I.A. (2008) Mixing efficiency in high-aspect-ratio Rayleigh-Taylor experiments. PHYS FLUIDS 20 (6): - JUN 2008 065106.
Scase M.M., Caulfield C.P. and Dalziel S.B. (2008) Temporal variation of non-ideal plumes with sudden reductions in buoyancy flux. J FLUID MECH 600: 181-199 APR 10 2008.
Bolster D. and Caulfield C.P. (2008) Transients in natural ventilation - A time-periodically varying source. BUILD SERV ENG RES T 29 (2): 119-135 2008.
Scase M.M., Caulfield C.P., Linden P.F. and Dalziel S.B. (2007) Local implications for self-similar turbulent plume models. J FLUID MECH 575: 257-265 MAR 25 2007.
Flynn M.R. and Caulfield C.P. (2006) Natural ventilation in interconnected chambers. J FLUID MECH 564: 139-158 OCT 10 2006.
Scase M.M., Caulfield C.P., Dalziel S.B. and Hunt J.C.R. (2006) Time-dependent plumes and jets with decreasing source strengths. J FLUID MECH 563: 443-461 SEP 25 2006.
Scase M.M., Caulfield C.P. and Dalziel S.B. (2006) Boussinesq plumes and jets with decreasing source strengths in stratified environments. J FLUID MECH 563: 463-472 SEP 25 2006.
Patterson M.D., Caulfield C.P., McElwaine J.N. and Dalziel S.B. (2006) Time-dependent mixing in stratified Kelvin-Helmholtz billows: Experimental observations. GEOPHYS RES LETT 33 (15): - AUG 15 2006 L15608.
Tang W., Caulfield C.P. and Young W.R. (2005) Bounds on dissipation in stress-driven flow in a rotating frame. J FLUID MECH 540: 373-391 OCT 10 2005.
Conroy D.T., Smith S.G.L. and Caulfield C.P. (2005) Evolution of a chemically reacting plume in a ventilated room. J FLUID MECH 537: 221-253 AUG 25 2005.
Caulfield C.P. (2005) Buoyancy flux bounds for surface-driven flow. J FLUID MECH 536: 367-376 AUG 10 2005.
Caulfield C.P., Tang W. and Plasting S.C. (2004) Reynolds number dependence of an upper bound for the long-time-averaged buoyancy flux in plane stratified Couette flow. J FLUID MECH 498: 315-332 JAN 10 2004.
Tang W., Caulfield C.P. and Young W.R. (2004) Bounds on dissipation in stress-driven flow. J FLUID MECH 510: 333-352 JUL 10 2004.
Woods A.W., Caulfield C.P. and Phillips J.C. (2003) Blocked natural ventilation: the effect of a source mass flux. J FLUID MECH 495: 119-133 NOV 25 2003.
Peltier W.R. and Caulfield C.P. (2003) Mixing efficiency in stratified shear flows. ANNU REV FLUID MECH 35: 135-167 2003.
Caulfield C.P. and Woods A.W. (2002) The mixing in a room by a localized finite-mass-flux source of buoyancy. J FLUID MECH 471: 33-50 NOV 25 2002.
Lee V. and Caulfield C.P. (2001) Nonlinear evolution of a layered stratified shear flow. DYNAM ATMOS OCEANS 34 (2-4): 103-124 OCT 2001.
Caulfield C.P. and Kerswell R.R. (2001) Maximal mixing rate in turbulent stably stratified Couette flow. PHYS FLUIDS 13 (4): 894-900 APR 2001.
Caulfield C.P. and Peltier W.R. (2000) The anatomy of the mixing transition in homogeneous and stratified free shear layers. J FLUID MECH 413: 1-47 JUN 25 2000.
Caulfield C.P. and Kerswell R.R. (2000) The nonlinear development of three-dimensional disturbances at hyperbolic stagnation points: A model of the braid region in mixing layers. PHYS FLUIDS 12 (5): 1032-1043 MAY 2000.
Caulfield C.P. and Woods A.W. (1998) Turbulent gravitational convection from a point source in a non-uniformly stratified environment. J FLUID MECH 360: 229-248 APR 10 1998.
CAULFIELD C.C.P. and WOODS A.W. (1995) Plumes with non-monotonic mixing behaviour. GEOPHYS ASTRO FLUID 79 (1-4): 173-199 1995.
CAULFIELD C.C.P. (1994) MULTIPLE LINEAR INSTABILITY OF LAYERED STRATIFIED SHEAR-FLOW. J FLUID MECH 258: 255-285 JAN 10 1994.
WOODS A.W. and CAULFIELD C.C.P. (1992) A LABORATORY STUDY OF EXPLOSIVE VOLCANIC-ERUPTIONS. J GEOPHYS RES-SOL EA 97 (B5): 6699-6712 MAY 10 1992.

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