Postdoctoral Research Associate in Flow Resistance

2 weeks ago


Durham, United Kingdom Durham University Full time

**Postdoctoral Research Associate in Flow Resistance of Rough-Bed Rivers (CFD modelling)**
**(**
**Job Number**:
**23000139**
**)**

Department of Geography

Grade 7: - £36,333 - £38,474 per annum

Fixed Term - Full Time

**Contract Duration***: 24 months

**Contracted Hours per Week***: 35

**Closing Date***: 10-Apr-2023, 5:59:00 PM

**Disclosure and Barring Service Requirement***: Not Applicable.

**The University**

At Durham University we are proud of our people. A globally outstanding centre of educational excellence, a collegiate community of extraordinary people, a unique and historic setting - Durham is a university like no other. We believe that inspiring our people to do outstanding things at Durham enables Durham people to do outstanding things professionally and personally.
Across the University we have a huge variety of roles and career opportunities, which together make us a large and successful community, which is a key hub of activity within our region and nationally. We would be thrilled if you would consider joining our thriving University. Further information about the University can be found here

**The Role and Department**

The Department of Geography at Durham comprises 68 academic staff (approximately equally divided between physical and human geography), a graduate school of around 100 research students, around 40 taught postgraduate students and more than 650 undergraduates. The Department is well supported with technical staff, including a cartography unit, and administrative staff.

The Department was ranked joint first for research quality among UK geography departments in REF2021 and third for research power. With 54% of work assessed as being in the highest category, it produced the largest number of world-leading (4*) publications in the country. The most recent QS rankings for Geography placed Durham 7th overall in the world, its 5th year in the top ten, and 1st for citations in the discipline. The department is recurrently ranked in the top handful of programmes in the UK by various league tables; in 2016, we were ranked 2nd in the Times Good University Guide and 3rd in both the Complete University Guide and the Guardian University Guide.

**The Role**

The Department of Geography at Durham University seeks to employ a full-time Post-Doctoral Research Associate in the flow resistance of rough-bed rivers, with a focus on Computational Fluid Dynamic (CFD) modelling. The PDRA will be a key member of the research team for the NERC-funded project “What controls the flow resistance of rough-bed rivers? Major new advances from high-resolution topography”, led by Professor Rebecca Hodge. The PDRA will be jointly supervised by Rebecca and Professor Richard Hardy. The PDRA will also collaborate with team members including another PDRA on the project Dr Robert Houseago (Durham University), Professor Steven Rice (University of Loughborough), Dr Chris Hackney (University of Newcastle) and Professor Rob Ferguson.

This project aims to quantify and predict the total flow resistance in rough-bed rivers. Such channels, in which flow is not usually much deeper than the largest bed particles, are typical of the headwater streams that make up 77% of all river networks. Using a combination of field data, flume modelling, and CFD modelling, we will determine the physical basis for how roughness elements of different scales combine to affect overall flow resistance, providing a fundamental advance in understanding and new approaches for predicting flow in rough-bed rivers.

This PDRA will have responsibility a) for designing, running and analysing experiments using CFD modelling, and b) for using the results to develop new relationships for flow resistance in rough-bed rivers. The design of the CFD experiments will be informed by current work by the other PDRA, who is using high-resolution topographic data from a range of rough-bed rivers to define a parameter space covering the topographic variability of these channels. The aim of the CFD experiments is to quantify how channel resistance is controlled by different topographic scales. The experiments will start by modelling flow over bed topographies that are characteristic of rough-bed rivers. Subsequent experiments will use versions of these beds that have been filtered to remove or retain different topographic scales, and the impact on the flow will be measured. The second responsibility of this position is to synthesise results from these experiments, as well as results from flume experiments undertaken by the other PDRA, to produce new flow resistance relationships.

Please see the full list of responsibilities and person specification given below.

**Responsibilities**:

- To plan, undertake and analyse CFD modelling experiments to quantify the influence of different topographies on overall flow resistance.
- To synthesise the results from the CFD modelling, alongside results from complementary flume experiments, to develop new flow r



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