Modelling Mixing Mechanisms

Modelling Mixing Mechanisms is an EPSRC Established Career Fellowship awarded to Professor Ian Guymer to lead the transition from simplified 1D modelling approaches to more robust residence time distribution (RTD) based descriptions of flows with low turbulence, complex 3D shapes and unsteady flows.

Diagram of the relationship between 1D modelling of networks, knowledge needed to carry it out, and users of 1D models.

Project description

Mixing effects in channels and pipes of uniform geometry can be represented with confidence in highly turbulent, steady flows. However, in the majority of water systems, the standard 1D model predictions fall short because of knowledge gaps due to low turbulence, 3D shapes and unsteady flows.

This Fellowship works to address the knowledge gaps, delivering a step change in the predictive capability of 1D water quality network models.

People

PI

Professor Ian Guymer

Professor of Civil Engineering
School of Mechanical, Aerospace and Civil Engineering

Email: i.guymer@��«Ӱҵ.ac.uk
Telephone: +44 114 222 5740

PDRA

Dr Fred Sonnenwald

Research Associate
School of Mechanical, Aerospace and Civil Engineering

Email: f.sonnenwald@sheffield.ac.uk
Telephone: +44 114 222 5416

PDRA

Dr Zhanjie Peng

Research Associate
School of Mechanical, Aerospace and Civil Engineering

Email: zhangjie.peng@sheffield.ac.uk

PDRA

Partners

Industrial

Dr Karen Burrell, WRc plc
Dr Robert M Clark, Environmental Engineering and Public Health Consultant
Dr Jonathan Cutting, Mouchel Consulting
Helga Gjeraldstveit, International Research Institute of Stavanger
Dr Barry Hankin, JBA
Dr Phil Hulme, Environment Agency
Dr Amy Jones, RPS
Dr Ole Mark, Krüger
Milo Purcell, Drinking Water Inspectorate
Dr Roger Van-Egmond, Unilever
Margaret Williams, Severn Trent Water

International academic

, University of Cincinnati, USA
, Delft University, Netherlands
, Massachusetts Institute of Technology, USA
, National University of Seoul, Korea

UK academic

Professor Joby Boxall FREng

Professor of Water Infrastructure Engineering
School of Mechanical, Aerospace and Civil Engineering

Email: j.b.boxall@sheffield.ac.uk
Telephone: +44 114 222 5760

Professor Virginia Stovin

Professor of Green Infrastructure for Stormwater Management
School of Mechanical, Aerospace and Civil Engineering

Email: v.stovin@sheffield.ac.uk
Telephone: +44 114 222 5051

, University of Warwick
, University of Warwick
, University of Warwick
, Heriot-Watt University

Outputs

Publications

Journal articles

Corredor-Garcia JL, Stovin V & Guymer I (2025) . ASCE Journal of Hydraulic Engineering, 151(1).
Peng Z, Stovin V & Guymer I (2024) . ASCE Journal of Hydraulic Engineering, 150(6).
Guymer I (2023) . ACADEMIA. The magazine of the Polish Academy of Sciences.
Sonnenwald F, Shuttleworth J, Bailey O, Williams M, Frankland J, Rhead B, Mark O, Wade MJ & Guymer I (2023) . Journal of Environmental Engineering, 149(5).
Västilä K, Oh J, Sonnenwald F, Ji U, Järvelä J, Bae I & Guymer I (2022) . Hydrological Processes, 36(6).
Stovin VR, Sonnenwald F, Golzar M & Guymer I (2022) . Water Resources Research, 58(4).
Sonnenwald F, Mark O, Stovin V & Guymer I (2021) . Journal of Hydraulic Engineering, 147(12).
Hart J, Sonnenwald F, Stovin V & Guymer I (2021) . Journal of Hydraulic Engineering, 147(9).
West PO, Wallis SG, Sonnenwald FC, Hart JR, Stovin VR & Guymer I (2021) . Journal of Hydraulic Research, 59(4), 621-636.
Grant SB, Gomez‐Velez JD, Ghisalberti M, Guymer I, Boano F, Roche K & Harvey J (2020) . Water Resources Research, 56(12).
Grant SB, Monofy A, Boano F, Gomez‐Velez JD, Guymer I, Harvey J & Ghisalberti M (2020) . Water Resources Research, 56(11).
Wei Z, Pagani A, Fu G, Guymer I, Chen W, McCann JA & Guo W (2020) . IEEE Transactions on Network Science and Engineering, 7(3), 1570-1582.
Gomez-Velez JD, Grant SB, Ghisalberti M, Guymer I, Boano F, Roche K & Harvey JW (2020) .
Whelan MJ, Ramos A, Villa R, Guymer I, Jefferson B & Rayner M (2020) . Environmental Science: Processes and Impacts, 22(4), 956-972.
El-Zehairy AA, Nezhad MM, Joekar-Niasar V, Guymer I, Kourra N & Williams MA (2019) . Advances in Water Resources, 131.
Ramos A, Whelan MJ, Guymer I, Villa R & Jefferson B (2019) . Environmental Chemistry, 16(8), 563-576.
Sonnenwald F, Guymer I & Stovin V (2019) . Water Resources Research, 55(3), 2322-2347.
Sonnenwald FC, Stovin V & Guymer I (2019) . Acta Geophysica, 67(3), 943-949.
Sonnenwald FC, Stovin V & Guymer I (2018) . Journal of Hydraulic Research, 57(4), 591-597.
Sonnenwald FC, Guymer I & Stovin V (2018) . Proceedings of the Institution of Civil Engineers. Water Management., 171(2), 76-86.
Ramos AM, Whelan MJ, Cosgrove S, Villa R, Jefferson B, Campo P, Jarvis P & Guymer I (2017) . Water and Environment Journal, 31(3), 380-387.
Sonnenwald FC, Hart JR, West P, Stovin VR & Guymer I (2017) . Water Resources Research, 53(1), 961-978.

Chapters

Solis S, Guymer I & Dutton R (2022) , Environmental Hydraulics. Volume 1 (pp. 283-288). CRC Press
Chandler ID, Pearson JM, Guymer I & Van-Egmond R (2022) , Environmental Hydraulics. Volume 2 (pp. 765-770). CRC Press

Conference proceedings papers

Sonnenwald F & Guymer I (2024) . Advances in Hydraulic Research: 40th International School of Hydraulics (pp 363-374). Kąty Rybackie, Poland, 23 May 2023 - 23 May 2023.
Piazza S, Peng Z, Sonnenwald FC, Garcia JLC, Sambito M, Freni G & Guymer I (2023) . Proceedings of the IAHR World Congress (pp 2342-2345)
Corredor Garcia JL, Stovin V & Guymer I (2022) . Proceedings of the 39th IAHR World Congress (pp 5140-5149), 19 June 2022 - 24 June 2022.
Corredor-Garcia JL, Stovin V & Guymer I (2022) . Proceedings of the IAHR World Congress (pp 5140-5149)
Corredor-Garcia JL, Delalande A, Stovin V & Guymer I (2020) (pp 43-52)
I G, V.R. S, N. W & S.S. S (2019) . 38th IAHR World Congress - "Water: Connecting the World", Vol. 38 (pp 5591-5598)
Stovin V, Guymer I & Sonnenwald F (2019) A validated CFD model for estimating residence times in vegetated stormwater ponds. NOVATECH 2019. Lyon, France, 1 July 2019 - 5 July 2019.
Atthanayake I, Esfahani S, Denissenko P, Guymer I, Thomas PJ & Guo W (2018) . Proceedings of the 5th ACM International Conference on Nanoscale Computing and Communication (pp 1-2)
Sonnenwald FC, Stovin V & Guymer I (2018) Use of drag coefficient to predict dispersion coefficients in emergent vegetation at low velocities. Proceedings of the 12th International Symposium on Ecohydraulics. Tokyo, Japan, 19 August 2018 - 19 August 2018.
Sonnenwald F, Stovin V & Guymer I (2018) A non-dimensional model for longitudinal dispersion in emergent vegetation based on stem-spacing. 5th IAHR Europe Congress. Trento, Italy, 12 June 2018 - 14 June 2018.
Golzar M, Sonnenwald F, Guymer I & Stovin V (2018) . Free Surface Flows and Transport Processes (pp 195-205). Jachranka, Poland, 23 May 2017 - 23 May 2017.
Golzar M, Sonnenwald F, Guymer I & Stovin VR (2017) Transverse mixing coefficient in random cylinder arrays – a CFD validation study. Proceedings of the 37th IAHR Word Congress, 13 August 2017 - 18 August 2017.

Software / Code

Guymer I & Sonnenwald F (2024) .
Sonnenwald F, Mark O, Guymer I & Stovin V (2021) .

Datasets

Hart J, Sonnenwald F & Guymer I (2021) .
Guymer I, Stovin V, O'Brien R, Dennis P, Saiyudthong C, Lau S-TD & Sonnenwald F (2020) .

Preprints

Grant SB, Monofy A, Boano F, Gomez-Velez JD, Guymer I, Harvey J & Ghisalberti M (2020) , Wiley.
Grant S, Gomez-Velez J, Ghisalberti M, Guymer I, Boano F, Roche K & Harvey J (2020) , Wiley.
Grant S, Gomez-Velez J, Ghisalberti M, Guymer I, Boano F, Roche K & Harvey J (2019) , Wiley.
Wei Z, Pagani A, Fu G, Guymer I, Chen W, McCann J & Guo W (2019) , arXiv.

Datasets

Software

Workshops

Project launch workshop, January 2018
Mixing Processes in Pipes, Sewers and the natural Environment from Theory to Practice, April 2023

This fellowship is funded by EPSRC grant .

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Mixing Studies

Mixing Studies