Geophysical Fluid Dynamics Chair

    Political Mathematics
    (I don't understand why explaining choices using numbers/open models is political but I guess creating clarity is deemed a political objective in this era of alt-facting):
  • MALT=Mortgage-Analysis-Learning Tool, 3rd project/working App '16/'17;
  • Tax analysis learning tool, 3rd project/making a working App on tax choices explained for all, in progress, '17/'18;
  • On falsification/verification of Boris Johnson's/Leave's claim ``We send the EU 350M a week; let's fund our NHS instead'':
    (i) Google UK's annual EU contribution; see from the table that it is 11342M Euros per annum.
    (ii) Divide 11342M per annum by 52 weeks, yielding 218.1M Euros per week.
    (iii) Dividing by the Euro/pound rate of 1/0.8910 (on Oct 25th 2017) gives 245M per week which is significantly less by 75M per week than Johnson's 350M per week.
    (iv) Moreover, putting this 245M per week in the NHS after Brexit would imply that the EU contributions on science, various projects in Wales and such will not be replaced by UK contributions.
    (v) Draw your own conclusions from these simple calculations on whether Johnson & co. were disingenuous or not.
    (vi) The point of the above is that anyone could have done these checks. I finally checked matters on Sept. 2017 (facebook post) and the next day it emerged in The Guardian but without explaining how simple this calculation is. Anyone can do this check.
Studying waves with mathematics is fun!

Trent Aegir tidal bore highest in July.

Science of Waves on show: public outreach presentation.

Roaring movies GFD: on hydraulic and granular bores.

Geophysical fluid dynamics (GFD) concerns the fluid motions of the atmosphere and ocean, and environmental dynamics such as river and coastal flows. This includes floods, beach erosion due to breaking waves, tides, and weather prediction.

My particular interest is in the applied mathematics of GFD: design and testing of laboratory configurations for validation of mathematical models, computational techniques for PDEs (DGFEM), Hamiltonian fluid dynamics, and hydraulic solutions of hyperbolic systems. I also investigate geological and industrial problems related to GFD. Examples are safety of underground storage sites due to break throughs (of volcanic magma) and granular flows in blast furnaces.
    Postdoc, PhD or related MSc projects are:
  • "Flood control strategies for 21st Century cities -optimal placement of weirs & reservoirs in the Aire River to save Leeds from flooding"
    PhD project [e.g. for CDT in Fluid Dynamics]
    Please inquire when interested.
    The Boxing Day Flood of 2015 in Leeds had an estimated excess volume of at least a body of water of 1 mile by 1 mile in horizontal extent by 2 metres high (see [1] and [2]), to avoid levels going over 3.9m in Armley. The hypothesis to be investigated is whether multiple strategically placed and adjustable weirs, normally open but closing on average 1:50 to 1:100 years, could have prevented all or the worst flooding in the middle Aire catchment including Bradford and Leeds. The principle of natural-flood-management or nature-based solutions is applied because the weirs will be placed at naturally suitable locations, creating “space for water” of which some potential locations have already been identified in the Aire middle catchment between Gargrave and Leeds. Each weirs costs 25k, so 5 weirs at 125k, flood damage Yorkshire 500k, unclear how much along Aire River (Bingley-Leeds section)?

    [1] Bokhove, Zweers 2016: Resurging Flows page
    [2] Bokhove 2017: My and other study group talks

  • Now: PhD positions within the Leeds Doctoral Training Program Centre on Fluid Dynamics (starting 2017, 2018; 2 more years): please inquire & see University link.
  • PhD: Dredging the depths of mathematics: dynamic beaches and sand bars (with data validation and applications in coastal hazard mitigation)

  • Numerical weather modelling of strongly rotating convection with phase changes 2017-2018 (with Prof. Steve Tobias)
  • Geometric integrators and closure theory in GFD
  • Hele-Shaw wavemaker design; refer to Bokhove et al. 2014, Thornton et al. 2014